'\" .UL arg1 arg2
'\" Print arg1 underlined, then print arg2 normally.
'\"
-'\" RCS: @(#) $Id: man.macros,v 1.3 2001/02/17 07:46:19 ghowlett Exp $
+'\" RCS: @(#) $Id: man.macros,v 1.1.1.1 2009/05/09 16:27:42 pcmacdon Exp $
'\"
'\" # Set up traps and other miscellaneous stuff for Tcl/Tk man pages.
.if t .wh -1.3i ^B
.de UL
\\$1\l'|0\(ul'\\$2
..
-.TH barchart n 2.4 BLT "BLT Built-In Commands"
+.TH barchart n 2.5 BLT "BLT Built-In Commands"
.BS
'\" Note: do not modify the .SH NAME line immediately below!
.SH NAME
postscript, and annotation markers. Each component can be queried or
modified.
.TP 1i
-\f(CWaxis\fR
+\fBaxis\fR
Up to four coordinate axes (two X\-coordinate and two Y\-coordinate
axes) can be displayed, but you can create and use any number of
ticks, and tick labels. Tick labels display the value at each major
tick.
.TP 1i
-\f(CWcrosshairs\fR
+\fBcrosshairs\fR
Cross hairs are used to position the mouse pointer relative to the X
and Y coordinate axes. Two perpendicular lines, intersecting at the
current location of the mouse, extend across the plotting area to the
coordinate axes.
.TP 1i
-\f(CWelement\fR
+\fBelement\fR
An element represents a set of data to be plotted. It contains an x
and y vector of values representing the data points. Each
data point is displayed as a bar where the length of the bar is
drawn side-by-side as thin bars. The width of each bar is a function
of the number of data points with the same abscissa.
.TP 1i
-\f(CWgrid\fR
+\fBgrid\fR
Extends the major and minor ticks of the X\-axis and/or Y\-axis across the
plotting area.
.TP 1i
-\f(CWlegend\fR
+\fBlegend\fR
The legend displays the name and symbol of each data element.
The legend can be drawn in any margin or in the plotting area.
.TP 1i
-\f(CWmarker\fR
+\fBmarker\fR
Markers are used annotate or highlight areas of the graph. For
example, you could use a text marker to label a particular data
point. Markers come in various forms: text strings, bitmaps, connected
line segments, images, polygons, or embedded widgets.
.TP 1i
-\f(CWpen\fR
+\fBpen\fR
Pens define attributes for elements. Data elements use pens to
specify how they should be drawn. A data element may use many pens at
once. Here the particular pen used for a data point is determined
from each element's weight vector (see the element's \fB\-weight\fR
and \fB\-style\fR options).
.TP 1i
-\f(CWpostscript\fR
+\fBpostscript\fR
The widget can generate encapsulated PostScript output. This component
has several options to configure how the PostScript is generated.
.SH SYNTAX
# Create a new bar chart. Plotting area is black.
barchart .b -plotbackground black
.CE
-A new Tcl command \f(CW.b\fR is created. This command can be used
+A new Tcl command \fB.b\fR is created. This command can be used
to query and modify the bar chart. For
example, to change the title of the graph to "My Plot", you use the
new command and the \fBconfigure\fR operation.
# Change the y coordinate of the first point.
set yVector(0) 25.18
.CE
-An element named \f(CWe1\fR is now created in \f(CW.b\fR. It
+An element named \fBe1\fR is now created in \fB.b\fR. It
is automatically added to the display list of elements. You can
use this list to control in what order elements are displayed.
To query or reset the element display list, you use the element's
\&.b configure -barmode aligned
.CE
By default, the element's label in the legend will be also
-\f(CWe1\fR. You can change the label, or specify no legend entry,
+\fBe1\fR. You can change the label, or specify no legend entry,
again using the element's \fBconfigure\fR operation.
.CS
# Don't display "e1" in the legend.
\&.b element configure e1 -fg red -bg pink \\
-stipple gray50
.CE
-Four coordinate axes are automatically created: \f(CWx\fR, \f(CWx2\fR,
-\f(CWy\fR, and \f(CWy2\fR. And by default, elements are mapped onto the
-axes \f(CWx\fR and \f(CWy\fR. This can be changed with the \fB\-mapx\fR
+Four coordinate axes are automatically created: \fBx\fR, \fBx2\fR,
+\fBy\fR, and \fBy2\fR. And by default, elements are mapped onto the
+axes \fBx\fR and \fBy\fR. This can be changed with the \fB\-mapx\fR
and \fB\-mapy\fR options.
.CS
# Map "e1" on the alternate y axis "y2".
-coords { -Inf 10.0 Inf 10.0 } \\
-dashes { 2 4 2 } -fg red -bg blue
.CE
-This creates a line marker named \f(CWlow_water\fR. It will display a
+This creates a line marker named \fBlow_water\fR. It will display a
horizontal line stretching across the plotting area at the
y-coordinate 10.0. The coordinates "-Inf" and "Inf" indicate the
relative minimum and maximum of the axis (in this case the x-axis). By
# Print the bar chart into file "file.ps"
\&.b postscript output file.ps -maxpect yes -decorations no
.CE
-This generates a file \f(CWfile.ps\fR containing the encapsulated
+This generates a file \fBfile.ps\fR containing the encapsulated
PostScript of the graph. The option \fB\-maxpect\fR says to scale the
plot to the size of the page. Turning off the \fB\-decorations\fR
option denotes that no borders or color backgrounds should be
Indicates how related bar elements will be drawn. Related elements
have data points with the same abscissas (X-coordinates). \fIMode\fR
indicates how those segments should be drawn. \fIMode\fR can be
-\f(CWinfront\fR, \f(CWaligned\fR, \f(CWoverlap\fR, or \f(CWstacked\fR.
-The default mode is \f(CWinfront\fR.
+\fBinfront\fR, \fBaligned\fR, \fBoverlap\fR, or \fBstacked\fR.
+The default mode is \fBinfront\fR.
.RS
.TP 1i
-\f(CWinfront\fR
+\fBinfront\fR
Each successive segment is drawn in front of the previous.
.TP 1i
-\f(CWstacked\fR
+\fBstacked\fR
Each successive segment is stacked vertically on top of the previous.
.TP 1i
-\f(CWaligned\fR
+\fBaligned\fR
Segments is displayed aligned from right-to-left.
.TP 1i
-\f(CWoverlap\fR
-Like \f(CWaligned\fR but segments slightly overlap each other.
+\fBoverlap\fR
+Like \fBaligned\fR but segments slightly overlap each other.
.RE
.TP
\fB\-barwidth \fIvalue\fR
Specifies the width of the bars. This value can be overrided by the
individual elements using their \fB\-barwidth\fR configuration option.
\fIValue\fR is the width in terms of graph coordinates. The
-default width is \f(CW1.0\fR.
+default width is \fB1.0\fR.
.TP
\fB\-borderwidth \fIpixels\fR
Sets the width of the 3\-D border around the outside edge of the widget. The
\fB\-relief\fR option determines if the border is to be drawn. The
-default is \f(CW2\fR.
+default is \fB2\fR.
.TP
\fB\-bottommargin \fIpixels\fR
Specifies the size of the margin below the X\-coordinate axis. If
-\fIpixels\fR is \f(CW0\fR, the size of the margin is selected automatically.
-The default is \f(CW0\fR.
+\fIpixels\fR is \fB0\fR, the size of the margin is selected automatically.
+The default is \fB0\fR.
.TP
\fB\-bufferelements \fIboolean\fR
Indicates whether an internal pixmap to buffer the display of data
example, moving a marker across the plot). See the
.SB "SPEED TIPS"
section.
-The default is \f(CW1\fR.
+The default is \fB1\fR.
.TP
\fB\-cursor \fIcursor\fR
-Specifies the widget's cursor. The default cursor is \f(CWcrosshair\fR.
+Specifies the widget's cursor. The default cursor is \fBcrosshair\fR.
.TP
\fB\-font \fIfontName\fR
Specifies the font of the graph title. The default is
-\f(CW*-Helvetica-Bold-R-Normal-*-18-180-*\fR.
+\fB*-Helvetica-Bold-R-Normal-*-18-180-*\fR.
.TP
\fB\-halo \fIpixels\fR
Specifies a maximum distance to consider when searching for the
closest data point (see the element's \fBclosest\fR operation below).
Data points further than \fIpixels\fR away are ignored. The default is
-\f(CW0.5i\fR.
+\fB0.5i\fR.
.TP
\fB\-height \fIpixels\fR
Specifies the requested height of widget. The default is
-\f(CW4i\fR.
+\fB4i\fR.
.TP
\fB\-invertxy \fIboolean\fR
Indicates whether the placement X\-axis and Y\-axis should be inverted. If
\fIboolean\fR is true, the X and Y axes are swapped. The default is
-\f(CW0\fR.
+\fB0\fR.
.TP
\fB\-justify \fIjustify\fR
Specifies how the title should be justified. This matters only when
the title contains more than one line of text. \fIJustify\fR must be
-\f(CWleft\fR, \f(CWright\fR, or \f(CWcenter\fR. The default is
-\f(CWcenter\fR.
+\fBleft\fR, \fBright\fR, or \fBcenter\fR. The default is
+\fBcenter\fR.
.TP
\fB\-leftmargin \fIpixels\fR
Sets the size of the margin from the left edge of the window to
-the Y\-coordinate axis. If \fIpixels\fR is \f(CW0\fR, the size is
-calculated automatically. The default is \f(CW0\fR.
+the Y\-coordinate axis. If \fIpixels\fR is \fB0\fR, the size is
+calculated automatically. The default is \fB0\fR.
.TP
\fB\-plotbackground \fIcolor\fR
Specifies the background color of the plotting area. The default is
-\f(CWwhite\fR.
+\fBwhite\fR.
.TP
\fB\-plotborderwidth \fIpixels\fR
Sets the width of the 3-D border around the plotting area. The
\fB\-plotrelief\fR option determines if a border is drawn. The
-default is \f(CW2\fR.
+default is \fB2\fR.
.TP
\fB\-plotpadx \fIpad\fR
Sets the amount of padding to be added to the left and right sides of
distances. If \fIpad\fR has two elements, the left side of the
plotting area entry is padded by the first distance and the right side
by the second. If \fIpad\fR is just one distance, both the left and
-right sides are padded evenly. The default is \f(CW8\fR.
+right sides are padded evenly. The default is \fB8\fR.
.TP
\fB\-plotpady \fIpad\fR
Sets the amount of padding to be added to the top and bottom of the
distances. If \fIpad\fR has two elements, the top of the plotting
area is padded by the first distance and the bottom by the second. If
\fIpad\fR is just one distance, both the top and bottom are padded
-evenly. The default is \f(CW8\fR.
+evenly. The default is \fB8\fR.
.TP
\fB\-plotrelief \fIrelief\fR
Specifies the 3-D effect for the plotting area. \fIRelief\fR
specifies how the interior of the plotting area should appear relative
-to rest of the graph; for example, \f(CWraised\fR means the plot should
+to rest of the graph; for example, \fBraised\fR means the plot should
appear to protrude from the graph, relative to the surface of the
-graph. The default is \f(CWsunken\fR.
+graph. The default is \fBsunken\fR.
.TP
\fB\-relief \fIrelief\fR
Specifies the 3-D effect for the barchart widget. \fIRelief\fR
specifies how the graph should appear relative to widget it is packed
-into; for example, \f(CWraised\fR means the graph should
-appear to protrude. The default is \f(CWflat\fR.
+into; for example, \fBraised\fR means the graph should
+appear to protrude. The default is \fBflat\fR.
.TP
\fB\-rightmargin \fIpixels\fR
Sets the size of margin from the plotting area to the right edge of
\fB\-takefocus\fR \fIfocus\fR
Provides information used when moving the focus from window to window
via keyboard traversal (e.g., Tab and Shift-Tab). If \fIfocus\fR is
-\f(CW0\fR, this means that this window should be skipped entirely during
-keyboard traversal. \f(CW1\fR means that the this window should always
+\fB0\fR, this means that this window should be skipped entirely during
+keyboard traversal. \fB1\fR means that the this window should always
receive the input focus. An empty value means that the traversal
scripts make the decision whether to focus on the window.
-The default is \f(CW""\fR.
+The default is \fB""\fR.
.TP
\fB\-tile \fIimage\fR
Specifies a tiled background for the widget. If \fIimage\fR isn't
-\f(CW""\fR, the background is tiled using \fIimage\fR.
+\fB""\fR, the background is tiled using \fIimage\fR.
Otherwise, the normal background color is drawn (see the
\fB\-background\fR option). \fIImage\fR must be an image created
-using the Tk \fBimage\fR command. The default is \f(CW""\fR.
+using the Tk \fBimage\fR command. The default is \fB""\fR.
.TP
\fB\-title \fItext\fR
-Sets the title to \fItext\fR. If \fItext\fR is \f(CW""\fR,
+Sets the title to \fItext\fR. If \fItext\fR is \fB""\fR,
no title will be displayed.
.TP
\fB\-topmargin \fIpixels\fR
Specifies the size of the margin above the x2 axis. If \fIpixels\fR
-is \f(CW0\fR, the margin size is calculated automatically.
+is \fB0\fR, the margin size is calculated automatically.
.TP
\fB\-width \fIpixels\fR
Specifies the requested width of the widget. The default is
-\f(CW5i\fR.
+\fB5i\fR.
.RE
.TP
\fIpathName \fBcrosshairs \fIoperation \fR?\fIarg\fR?
.TP
\fIpathName \fBextents \fIitem\fR
Returns the size of a particular item in the graph. \fIItem\fR must
-be either \f(CWleftmargin\fR, \f(CWrightmargin\fR, \f(CWtopmargin\fR,
-\f(CWbottommargin\fR, \f(CWplotwidth\fR, or \f(CWplotheight\fR.
+be either \fBleftmargin\fR, \fBrightmargin\fR, \fBtopmargin\fR,
+\fBbottommargin\fR, \fBplotwidth\fR, or \fBplotheight\fR.
.TP
\fIpathName \fBgrid \fIoperation \fR?\fIarg\fR?...
See the
Returns a list of containing the X-Y graph coordinates.
.TP
\fIpathName \fBinside \fIx y\fR
-Returns \f(CW1\fR is the designated screen coordinate (\fIx\fR and \fIy\fR)
-is inside the plotting area and \f(CW0\fR otherwise.
+Returns \fB1\fR is the designated screen coordinate (\fIx\fR and \fIy\fR)
+is inside the plotting area and \fB0\fR otherwise.
.TP
\fIpathName \fBlegend \fIoperation \fR?\fIarg\fR?...
See the
aspect or part of the graph.
.SS "AXIS COMPONENTS"
Four coordinate axes are automatically created: two X\-coordinate axes
-(\f(CWx\fR and \f(CWx2\fR) and two Y\-coordinate axes (\f(CWy\fR, and
-\f(CWy2\fR). By default, the axis \f(CWx\fR is located in the bottom
-margin, \f(CWy\fR in the left margin, \f(CWx2\fR in the top margin, and
-\f(CWy2\fR in the right margin.
+(\fBx\fR and \fBx2\fR) and two Y\-coordinate axes (\fBy\fR, and
+\fBy2\fR). By default, the axis \fBx\fR is located in the bottom
+margin, \fBy\fR in the left margin, \fBx2\fR in the top margin, and
+\fBy2\fR in the right margin.
.PP
An axis consists of the axis line, title, major and minor ticks, and
tick labels. Major ticks are drawn at uniform intervals along the
.CE
While you can have many axes, only four axes can be displayed
simultaneously. They are drawn in each of the margins surrounding
-the plotting area. The axes \f(CWx\fR and \f(CWy\fR are drawn in the
-bottom and left margins. The axes \f(CWx2\fR and \f(CWy2\fR are drawn in
-top and right margins. Only \f(CWx\fR and \f(CWy\fR are shown by
+the plotting area. The axes \fBx\fR and \fBy\fR are drawn in the
+bottom and left margins. The axes \fBx2\fR and \fBy2\fR are drawn in
+top and right margins. Only \fBx\fR and \fBy\fR are shown by
default. Note that the axes can have different scales.
.PP
To display a different axis, you invoke one of the following
are automatically reset to display the most recent data points in this range.
If \fIrange\fR is 0.0, the range is
determined from the limits of the data. If \fB\-min\fR or \fB-max\fR
-are specified, they override this option. The default is \f(CW0.0\fR.
+are specified, they override this option. The default is \fB0.0\fR.
.TP
\fB\-color \fIcolor\fR
Sets the color of the axis and tick labels.
-The default is \f(CWblack\fR.
+The default is \fBblack\fR.
.TP
\fB\-command \fIprefix\fR
Specifies a Tcl command to be invoked when formatting the axis tick
major tick on the axis. Two additional arguments are passed to the
procedure: the pathname of the widget and the current the numeric
value of the tick. The procedure returns the formatted tick label. If
-\f(CW""\fR is returned, no label will appear next to the tick. You can
+\fB""\fR is returned, no label will appear next to the tick. You can
get the standard tick labels again by setting \fIprefix\fR to
-\f(CW""\fR. The default is \f(CW""\fR.
+\fB""\fR. The default is \fB""\fR.
.sp 1
Please note that this procedure is invoked while the bar chart is redrawn.
You may query the widget's configuration options. But do not reset
\fB\-descending \fIboolean\fR
Indicates whether the values along the axis are monotonically increasing or
decreasing. If \fIboolean\fR is true, the axis values will be
-decreasing. The default is \f(CW0\fR.
+decreasing. The default is \fB0\fR.
.TP
\fB\-hide \fIboolean\fR
Indicates whether the axis is displayed.
\fB\-justify \fIjustify\fR
Specifies how the axis title should be justified. This matters only
when the axis title contains more than one line of text. \fIJustify\fR
-must be \f(CWleft\fR, \f(CWright\fR, or \f(CWcenter\fR. The default is
-\f(CWcenter\fR.
+must be \fBleft\fR, \fBright\fR, or \fBcenter\fR. The default is
+\fBcenter\fR.
.TP
\fB\-limits \fIformatStr\fR
Specifies a printf-like description to format the minimum and maximum
one or two format descriptions. If one description is supplied, both
the minimum and maximum limits are formatted in the same way. If two,
the first designates the format for the minimum limit, the second for
-the maximum. If \f(CW""\fR is given as either description, then
-the that limit will not be displayed. The default is \f(CW""\fR.
+the maximum. If \fB""\fR is given as either description, then
+the that limit will not be displayed. The default is \fB""\fR.
.TP
\fB\-linewidth \fIpixels\fR
-Sets the width of the axis and tick lines. The default is \f(CW1\fR
+Sets the width of the axis and tick lines. The default is \fB1\fR
pixel.
.TP
\fB\-logscale \fIboolean\fR
at the outermost data points, or loosely, at the outer tick intervals.
This is relevant only when the axis limit is automatically calculated.
If \fIboolean\fR is true, the axis range is "loose".
-The default is \f(CW0\fR.
+The default is \fB0\fR.
.TP
\fB\-majorticks \fImajorList\fR
Specifies where to display major axis ticks. You can use this option
to display ticks at non-uniform intervals. \fIMajorList\fR is a list
of axis coordinates designating the location of major ticks. No
-minor ticks are drawn. If \fImajorList\fR is \f(CW""\fR,
-major ticks will be automatically computed. The default is \f(CW""\fR.
+minor ticks are drawn. If \fImajorList\fR is \fB""\fR,
+major ticks will be automatically computed. The default is \fB""\fR.
.TP
\fB\-max \fIvalue\fR
Sets the maximum limit of \fIaxisName\fR. Any data point greater
-than \fIvalue\fR is not displayed. If \fIvalue\fR is \f(CW""\fR,
+than \fIvalue\fR is not displayed. If \fIvalue\fR is \fB""\fR,
the maximum limit is calculated using the largest data value.
-The default is \f(CW""\fR.
+The default is \fB""\fR.
.TP
\fB\-min \fIvalue\fR
Sets the minimum limit of \fIaxisName\fR. Any data point less than
-\fIvalue\fR is not displayed. If \fIvalue\fR is \f(CW""\fR,
+\fIvalue\fR is not displayed. If \fIvalue\fR is \fB""\fR,
the minimum limit is calculated using the smallest data value.
-The default is \f(CW""\fR.
+The default is \fB""\fR.
.TP
\fB\-minorticks \fIminorList\fR
Specifies where to display minor axis ticks. You can use this option
to display minor ticks at non-uniform intervals. \fIMinorList\fR is a
list of real values, ranging from 0.0 to 1.0, designating the placement of
a minor tick. No minor ticks are drawn if the \fB\-majortick\fR
-option is also set. If \fIminorList\fR is \f(CW""\fR, minor ticks will
-be automatically computed. The default is \f(CW""\fR.
+option is also set. If \fIminorList\fR is \fB""\fR, minor ticks will
+be automatically computed. The default is \fB""\fR.
.TP
\fB\-rotate \fItheta\fR
Specifies the how many degrees to rotate the axis tick labels.
\fITheta\fR is a real value representing the number of degrees
-to rotate the tick labels. The default is \f(CW0.0\fR degrees.
+to rotate the tick labels. The default is \fB0.0\fR degrees.
.TP
\fB\-shiftby \fIvalue\fR
Specifies how much to automatically shift the range of the axis.
is increased in increments of \fIvalue\fR. You can use this
option to prevent the axis limits from being recomputed
at each new time point. If \fIvalue\fR is 0.0, then no automatic
-shifting is down. The default is \f(CW0.0\fR.
+shifting is down. The default is \fB0.0\fR.
.TP
\fB\-showticks \fIboolean\fR
Indicates whether axis ticks should be drawn. If \fIboolean\fR is
true, ticks are drawn. If false, only the
-axis line is drawn. The default is \f(CW1\fR.
+axis line is drawn. The default is \fB1\fR.
.TP
\fB\-stepsize \fIvalue\fR
Specifies the interval between major axis ticks. If \fIvalue\fR isn't
Indicates how many minor axis ticks are
to be drawn. For example, if \fInumber\fR is two, only one minor
tick is drawn. If \fInumber\fR is one, no minor ticks are
-displayed. The default is \f(CW2\fR.
+displayed. The default is \fB2\fR.
.TP
\fB\-tickfont \fIfontName\fR
Specifies the font for axis tick labels. The default is
-\f(CW*-Courier-Bold-R-Normal-*-100-*\fR.
+\fB*-Courier-Bold-R-Normal-*-100-*\fR.
.TP
\fB\-ticklength \fIpixels\fR
Sets the length of major and minor ticks (minor ticks are half the
length of major ticks). If \fIpixels\fR is less than zero, the axis
will be inverted with ticks drawn pointing towards the plot. The
-default is \f(CW0.1i\fR.
+default is \fB0.1i\fR.
.TP
\fB\-title \fItext\fR
Sets the title of the axis. If \fItext\fR is
-\f(CW""\fR, no axis title will be displayed.
+\fB""\fR, no axis title will be displayed.
.TP
\fB\-titlecolor \fIcolor\fR
-Sets the color of the axis title. The default is \f(CWblack\fR.
+Sets the color of the axis title. The default is \fBblack\fR.
.TP
\fB\-titlefont \fIfontName\fR
Specifies the font for axis title. The default is
-\f(CW*-Helvetica-Bold-R-Normal-*-14-140-*\fR.
+\fB*-Helvetica-Bold-R-Normal-*-14-140-*\fR.
.PP
Axis configuration options may be also be set by the \fBoption\fR
-command. The resource class is \f(CWAxis\fR. The resource names
-are the names of the axes (such as \f(CWx\fR or \f(CWx2\fR).
+command. The resource class is \fBAxis\fR. The resource names
+are the names of the axes (such as \fBx\fR or \fBx2\fR).
.CS
option add *Barchart.Axis.Color blue
option add *Barchart.x.LogScale true
.TP
\fIpathName \fBaxis limits \fIaxisName\fR
Returns a list of the minimum and maximum limits for \fIaxisName\fR. The order
-of the list is \f(CWmin max\fR.
+of the list is \fBmin max\fR.
.TP
\fIpathName \fBaxis names \fR?\fIpattern\fR?...
Returns a list of axes matching zero or more patterns. If no
the it to \fIaxisName\fR. Returns the transformed screen coordinate.
.PP
Only four axes can be displayed simultaneously. By default, they are
-\f(CWx\fR, \f(CWy\fR, \f(CWx2\fR, and \f(CWy2\fR. You can swap in a different
+\fBx\fR, \fBy\fR, \fBx2\fR, and \fBy2\fR. You can swap in a different
axis with \fBuse\fR operation of the special axis components:
\fBxaxis\fR, \fBx2axis\fR, \fByaxis\fR, and \fBy2axis\fR.
.CS
right Y-axis.
.PP
They implicitly control the axis that is currently using to that
-location. By default, \fBxaxis\fR uses the \f(CWx\fR axis, \fByaxis\fR
-uses \f(CWy\fR, \fBx2axis\fR uses \f(CWx2\fR, and \fBy2axis\fR uses
-\f(CWy2\fR. These components can be more convenient to use than always
+location. By default, \fBxaxis\fR uses the \fBx\fR axis, \fByaxis\fR
+uses \fBy\fR, \fBx2axis\fR uses \fBx2\fR, and \fBy2axis\fR uses
+\fBy2\fR. These components can be more convenient to use than always
determining what axes are current being displayed by the graph.
.PP
The following operations are available for axes. They mirror exactly
.RS
.TP
\fB\-color \fIcolor\fR
-Sets the color of the cross hairs. The default is \f(CWblack\fR.
+Sets the color of the cross hairs. The default is \fBblack\fR.
.TP
\fB\-dashes \fIdashList\fR
Sets the dash style of the cross hairs. \fIDashList\fR is a list of up
to 11 numbers that alternately represent the lengths of the dashes
and gaps on the cross hair lines. Each number must be between 1 and
-255. If \fIdashList\fR is \f(CW""\fR, the cross hairs will be solid
+255. If \fIdashList\fR is \fB""\fR, the cross hairs will be solid
lines.
.TP
\fB\-hide \fIboolean\fR
Indicates whether cross hairs are drawn. If \fIboolean\fR is true,
-cross hairs are not drawn. The default is \f(CWyes\fR.
+cross hairs are not drawn. The default is \fByes\fR.
.TP
\fB\-linewidth \fIpixels\fR
-Set the width of the cross hair lines. The default is \f(CW1\fR.
+Set the width of the cross hair lines. The default is \fB1\fR.
.TP
\fB\-position \fIpos\fR
Specifies the screen position where the cross hairs intersect.
.PP
Cross hairs configuration options may be also be set by the
\fBoption\fR command. The resource name and class are
-\f(CWcrosshairs\fR and \f(CWCrosshairs\fR respectively.
+\fBcrosshairs\fR and \fBCrosshairs\fR respectively.
.CS
option add *Barchart.Crosshairs.LineWidth 2
option add *Barchart.Crosshairs.Color red
.sp
If all arguments are specified then a new binding is created, replacing
any existing binding for the same \fIsequence\fR and \fItagName\fR.
-If the first character of \fIcommand\fR is \f(CW+\fR then \fIcommand\fR
+If the first character of \fIcommand\fR is \fB+\fR then \fIcommand\fR
augments an existing binding rather than replacing it.
If no \fIcommand\fR argument is provided then the command currently
associated with \fItagName\fR and \fIsequence\fR (it's an error occurs
returns a list containing the name of the closest element, the index
of its closest point, and the graph coordinates of the
point. If no data point within the threshold distance can be found,
-\f(CW""\fR is returned. The following \fIoption\fR-\fIvalue\fR pairs
+\fB""\fR is returned. The following \fIoption\fR-\fIvalue\fR pairs
are available.
.RS
.TP
\fB\-halo \fIpixels\fR
Specifies a threshold distance where selected data points are ignored.
-\fIPixels\fR is a valid screen distance, such as \f(CW2\fR or \f(CW1.2i\fR.
+\fIPixels\fR is a valid screen distance, such as \fB2\fR or \fB1.2i\fR.
If this option isn't specified, then it defaults to the value of the
\fBbarchart\fR's \fB\-halo\fR option.
.RE
.TP
\fB\-activepen \fIpenName\fR
Specifies pen to use to draw active element. If \fIpenName\fR is
-\f(CW""\fR, no active elements will be drawn. The default is
-\f(CWactiveLine\fR.
+\fB""\fR, no active elements will be drawn. The default is
+\fBactiveLine\fR.
.TP
\fB\-bindtags \fItagList\fR
Specifies the binding tags for the element. \fITagList\fR is a list
events for elements. Each tag in the list matching the current event
sequence will have its Tcl command executed. Implicitly the name of
the element is always the first tag in the list. The default value is
-\f(CWall\fR.
+\fBall\fR.
.TP
\fB\-background \fIcolor\fR
Sets the the color of the border around each bar. The default is
-\f(CWwhite\fR.
+\fBwhite\fR.
.TP
\fB\-barwidth \fIvalue\fR
Specifies the width the bars drawn for the element. \fIValue\fR is
\fB\-baseline \fIvalue\fR
Specifies the baseline of the bar segments. This affects how bars are
drawn since bars are drawn from their respective y-coordinate the
-baseline. By default the baseline is \f(CW0.0\fR.
+baseline. By default the baseline is \fB0.0\fR.
.TP
\fB\-borderwidth \fIpixels\fR
Sets the border width of the 3-D border drawn around the outside of
each bar. The \fB\-relief\fR option determines if such a border is
-drawn. \fIPixels\fR must be a valid screen distance like \f(CW2\fR or
-\f(CW0.25i\fR. The default is \f(CW2\fR.
+drawn. \fIPixels\fR must be a valid screen distance like \fB2\fR or
+\fB0.25i\fR. The default is \fB2\fR.
.TP
\fB\-data \fIcoordList\fR
Specifies the X\-Y coordinates of the data. \fICoordList\fR is a
Sets the color of the interior of the bars.
.TP
\fB\-hide \fIboolean\fR
-Indicates whether the element is displayed. The default is \f(CWno\fR.
+Indicates whether the element is displayed. The default is \fBno\fR.
.TP
\fB\-label \fItext\fR
Sets the element's label in the legend. If \fItext\fR
-is \f(CW""\fR, the element will have no entry in the legend.
+is \fB""\fR, the element will have no entry in the legend.
The default label is the element's name.
.TP
\fB\-mapx \fIxAxis\fR
Selects the X\-axis to map the element's X\-coordinates onto.
-\fIXAxis\fR must be the name of an axis. The default is \f(CWx\fR.
+\fIXAxis\fR must be the name of an axis. The default is \fBx\fR.
.TP
\fB\-mapy \fIyAxis\fR
Selects the Y\-axis to map the element's Y\-coordinates onto.
-\fIYAxis\fR must be the name of an axis. The default is \f(CWy\fR.
+\fIYAxis\fR must be the name of an axis. The default is \fBy\fR.
.TP
\fB\-relief \fIstring\fR
Specifies the 3-D effect desired for bars. \fIRelief\fR indicates how
the interior of the bar should appear relative to the surface of the
-chart; for example, \f(CWraised\fR means the bar should appear to
+chart; for example, \fBraised\fR means the bar should appear to
protrude from the surface of the plotting area. The default is
-\f(CWraised\fR.
+\fBraised\fR.
.TP
\fB\-stipple \fIbitmap\fR
Specifies a stipple pattern with which to draw the bars. If
-\fIbitmap\fR is \f(CW""\fR, then the bar is drawn in a solid fashion.
+\fIbitmap\fR is \fB""\fR, then the bar is drawn in a solid fashion.
.TP
\fB\-xdata \fIxVector\fR
Specifies the x-coordinate vector of the data.
.PP
Element configuration options may also be set by the
\fBoption\fR command. The resource names in the option database
-are prefixed by \f(CWelem\fR.
+are prefixed by \fBelem\fR.
.CS
option add *Barchart.Element.background blue
.CE
The graph will be redrawn without the deleted elements.
.TP
\fIpathName \fBelement exists \fIelemName\fR
-Returns \f(CW1\fR if an element \fIelemName\fR currently exists and
-\f(CW0\fR otherwise.
+Returns \fB1\fR if an element \fIelemName\fR currently exists and
+\fB0\fR otherwise.
.TP
\fIpathName \fBelement names \fR?\fIpattern\fR?...
Returns the elements matching one or more pattern. If no
\fIpathName \fBelement type\fR \fIelemName\fR
Returns the type of \fIelemName\fR.
If the element is a bar element, the commands returns the string
-\f(CW"bar"\fR, otherwise it returns \f(CW"line"\fR.
+\fB"bar"\fR, otherwise it returns \fB"line"\fR.
.CE
.SS "GRID COMPONENT"
Grid lines extend from the major and minor ticks of each axis
.RS
.TP
\fB\-color \fIcolor\fR
-Sets the color of the grid lines. The default is \f(CWblack\fR.
+Sets the color of the grid lines. The default is \fBblack\fR.
.TP
\fB\-dashes \fIdashList\fR
Sets the dash style of the grid lines. \fIDashList\fR is a list of up
to 11 numbers that alternately represent the lengths of the dashes
and gaps on the grid lines. Each number must be between 1 and 255.
-If \fIdashList\fR is \f(CW""\fR, the grid will be solid lines.
+If \fIdashList\fR is \fB""\fR, the grid will be solid lines.
.TP
\fB\-hide \fIboolean\fR
Indicates whether the grid should be drawn. If \fIboolean\fR
-is true, grid lines are not shown. The default is \f(CWyes\fR.
+is true, grid lines are not shown. The default is \fByes\fR.
.TP
\fB\-linewidth \fIpixels\fR
-Sets the width of grid lines. The default width is \f(CW1\fR.
+Sets the width of grid lines. The default width is \fB1\fR.
.TP
\fB\-mapx \fIxAxis\fR
Specifies the X\-axis to display grid lines. \fIXAxis\fR
-must be the name of an axis or \f(CW""\fR for no grid lines.
-The default is \f(CW""\fR.
+must be the name of an axis or \fB""\fR for no grid lines.
+The default is \fB""\fR.
.TP
\fB\-mapy \fIyAxis\fR
Specifies the Y\-axis to display grid lines. \fIYAxis\fR
-must be the name of an axis or \f(CW""\fR for no grid lines.
-The default is \f(CWy\fR.
+must be the name of an axis or \fB""\fR for no grid lines.
+The default is \fBy\fR.
.TP
\fB\-minor \fIboolean\fR
Indicates whether the grid lines should be drawn for minor ticks.
If \fIboolean\fR is true, the lines will appear at
-minor tick intervals. The default is \f(CW1\fR.
+minor tick intervals. The default is \fB1\fR.
.PP
Grid configuration options may also be set by the
-\fBoption\fR command. The resource name and class are \f(CWgrid\fR and
-\f(CWGrid\fR respectively.
+\fBoption\fR command. The resource name and class are \fBgrid\fR and
+\fBGrid\fR respectively.
.CS
option add *Barchart.grid.LineWidth 2
option add *Barchart.Grid.Color black
.sp
If all arguments are specified then a new binding is created, replacing
any existing binding for the same \fIsequence\fR and \fItagName\fR.
-If the first character of \fIcommand\fR is \f(CW+\fR then \fIcommand\fR
+If the first character of \fIcommand\fR is \fB+\fR then \fIcommand\fR
augments an existing binding rather than replacing it.
If no \fIcommand\fR argument is provided then the command currently
associated with \fItagName\fR and \fIsequence\fR (it's an error occurs
.TP
\fB\-activeborderwidth \fIpixels\fR
Sets the width of the 3-D border around the outside edge of the active legend
-entries. The default is \f(CW2\fR.
+entries. The default is \fB2\fR.
.TP
\fB\-activeforeground \fIcolor\fR
Sets the foreground color for active legend entries. All legend
\fB\-activerelief \fIrelief\fR
Specifies the 3-D effect desired for active legend entries.
\fIRelief\fR denotes how the interior of the entry should appear
-relative to the legend; for example, \f(CWraised\fR means the entry
+relative to the legend; for example, \fBraised\fR means the entry
should appear to protrude from the legend, relative to the surface of
-the legend. The default is \f(CWflat\fR.
+the legend. The default is \fBflat\fR.
.TP
\fB\-anchor \fIanchor\fR
Tells how to position the legend relative to the positioning point for
the legend. This is dependent on the value of the \fB\-position\fR
-option. The default is \f(CWcenter\fR.
+option. The default is \fBcenter\fR.
.RS
.TP 1.25i
-\f(CWleft\fR or \f(CWright\fR
+\fBleft\fR or \fBright\fR
The anchor describes how to position the legend vertically.
.TP
-\f(CWtop\fR or \f(CWbottom\fR
+\fBtop\fR or \fBbottom\fR
The anchor describes how to position the legend horizontally.
.TP
-\f(CW@x,y\fR
+\fB@x,y\fR
The anchor specifies how to position the legend relative to the
-positioning point. For example, if \fIanchor\fR is \f(CWcenter\fR then
-the legend is centered on the point; if \fIanchor\fR is \f(CWn\fR then
+positioning point. For example, if \fIanchor\fR is \fBcenter\fR then
+the legend is centered on the point; if \fIanchor\fR is \fBn\fR then
the legend will be drawn such that the top center point of the
rectangular region occupied by the legend will be at the positioning
point.
.TP
-\f(CWplotarea\fR
+\fBplotarea\fR
The anchor specifies how to position the legend relative to the
-plotting area. For example, if \fIanchor\fR is \f(CWcenter\fR then the
-legend is centered in the plotting area; if \fIanchor\fR is \f(CWne\fR
+plotting area. For example, if \fIanchor\fR is \fBcenter\fR then the
+legend is centered in the plotting area; if \fIanchor\fR is \fBne\fR
then the legend will be drawn such that occupies the upper right
corner of the plotting area.
.RE
.TP
\fB\-background \fIcolor\fR
-Sets the background color of the legend. If \fIcolor\fR is \f(CW""\fR,
+Sets the background color of the legend. If \fIcolor\fR is \fB""\fR,
the legend background with be transparent.
.TP
\fB\-bindtags \fItagList\fR
of binding tag names. The tags and their order will determine how
events for legend entries. Each tag in the list matching the current
event sequence will have its Tcl command executed. The default value
-is \f(CWall\fR.
+is \fBall\fR.
.TP
\fB\-borderwidth \fIpixels\fR
Sets the width of the 3-D border around the outside edge of the legend (if
such border is being drawn; the \fBrelief\fR option determines this).
-The default is \f(CW2\fR pixels.
+The default is \fB2\fR pixels.
.TP
\fB\-font \fIfontName\fR
\fIFontName\fR specifies a font to use when drawing the labels of each
element into the legend. The default is
-\f(CW*-Helvetica-Bold-R-Normal-*-12-120-*\fR.
+\fB*-Helvetica-Bold-R-Normal-*-12-120-*\fR.
.TP
\fB\-foreground \fIcolor\fR
Sets the foreground color of the text drawn for the element's label.
-The default is \f(CWblack\fR.
+The default is \fBblack\fR.
.TP
\fB\-hide \fIboolean\fR
Indicates whether the legend should be displayed. If \fIboolean\fR is
-true, the legend will not be draw. The default is \f(CWno\fR.
+true, the legend will not be draw. The default is \fBno\fR.
.TP
\fB\-ipadx \fIpad\fR
Sets the amount of internal padding to be added to the width of each
\fIpad\fR has two elements, the left side of the legend entry is
padded by the first distance and the right side by the second. If
\fIpad\fR is just one distance, both the left and right sides are padded
-evenly. The default is \f(CW2\fR.
+evenly. The default is \fB2\fR.
.TP
\fB\-ipady \fIpad\fR
Sets an amount of internal padding to be added to the height of each
\fIpad\fR has two elements, the top of the entry is padded by the
first distance and the bottom by the second. If \fIpad\fR is just
one distance, both the top and bottom of the entry are padded evenly.
-The default is \f(CW2\fR.
+The default is \fB2\fR.
.TP
\fB\-padx \fIpad\fR
Sets the padding to the left and right exteriors of the legend.
has two elements, the left side of the legend is padded by the first
distance and the right side by the second. If \fIpad\fR has just one
distance, both the left and right sides are padded evenly. The
-default is \f(CW4\fR.
+default is \fB4\fR.
.TP
\fB\-pady \fIpad\fR
Sets the padding above and below the legend. \fIPad\fR can be a list
of one or two screen distances. If \fIpad\fR has two elements, the area above
the legend is padded by the first distance and the area below by the
second. If \fIpad\fR is just one distance, both the top and
-bottom areas are padded evenly. The default is \f(CW0\fR.
+bottom areas are padded evenly. The default is \fB0\fR.
.TP
\fB\-position \fIpos\fR
Specifies where the legend is drawn. The
\fB\-anchor\fR option also affects where the legend is positioned. If
-\fIpos\fR is \f(CWleft\fR, \f(CWleft\fR, \f(CWtop\fR, or \f(CWbottom\fR, the
+\fIpos\fR is \fBleft\fR, \fBleft\fR, \fBtop\fR, or \fBbottom\fR, the
legend is drawn in the specified margin. If \fIpos\fR is
-\f(CWplotarea\fR, then the legend is drawn inside the plotting area at a
+\fBplotarea\fR, then the legend is drawn inside the plotting area at a
particular anchor. If \fIpos\fR is in the form "\fI@x,y\fR", where
\fIx\fR and \fIy\fR are the window coordinates, the legend is drawn in
the plotting area at the specified coordinates. The default is
-\f(CWright\fR.
+\fBright\fR.
.TP
\fB\-raised \fIboolean\fR
Indicates whether the legend is above or below the data elements. This
matters only if the legend is in the plotting area. If \fIboolean\fR
is true, the legend will be drawn on top of any elements that may
-overlap it. The default is \f(CWno\fR.
+overlap it. The default is \fBno\fR.
.TP
\fB\-relief \fIrelief\fR
Specifies the 3-D effect for the border around the legend.
\fIRelief\fR specifies how the interior of the legend should appear
-relative to the bar chart; for example, \f(CWraised\fR means the legend
+relative to the bar chart; for example, \fBraised\fR means the legend
should appear to protrude from the bar chart, relative to the surface of
-the bar chart. The default is \f(CWsunken\fR.
+the bar chart. The default is \fBsunken\fR.
.PP
Legend configuration options may also be set by the \fBoption\fR
-command. The resource name and class are \f(CWlegend\fR and
-\f(CWLegend\fR respectively.
+command. The resource name and class are \fBlegend\fR and
+\fBLegend\fR respectively.
.CS
option add *Barchart.legend.Foreground blue
option add *Barchart.Legend.Relief raised
Returns the name of the element whose entry is at the screen position
\fIpos\fR in the legend. \fIPos\fR must be in the form "\fI@x,y\fR",
where \fIx\fR and \fIy\fR are window coordinates. If the given
-coordinates do not lie over a legend entry, \f(CW""\fR is returned.
+coordinates do not lie over a legend entry, \fB""\fR is returned.
.SS "PEN COMPONENTS"
Pens define attributes for elements.
Pens mirror the configuration options of data elements that pertain to
each element's weight vector (see the element's \fB\-weight\fR and
\fB\-style\fR options).
.PP
-One pen, called \f(CWactiveBar\fR, is automatically created.
+One pen, called \fBactiveBar\fR, is automatically created.
It's used as the default active pen for elements. So you can change
the active attributes for all elements by simply reconfiguring this
pen.
\&.g element configure "e1" -styles { myPen 2.0 3.0 }
.CE
This says that any data point with a weight between 2.0 and 3.0
-is to be drawn using the pen \f(CWmyPen\fR. All other points
+is to be drawn using the pen \fBmyPen\fR. All other points
are drawn with the element's default attributes.
.PP
The following operations are available for pen components.
.TP
\fB\-background \fIcolor\fR
Sets the the color of the border around each bar. The default is
-\f(CWwhite\fR.
+\fBwhite\fR.
.TP
\fB\-borderwidth \fIpixels\fR
Sets the border width of the 3-D border drawn around the outside of
each bar. The \fB\-relief\fR option determines if such a border is
-drawn. \fIPixels\fR must be a valid screen distance like \f(CW2\fR or
-\f(CW0.25i\fR. The default is \f(CW2\fR.
+drawn. \fIPixels\fR must be a valid screen distance like \fB2\fR or
+\fB0.25i\fR. The default is \fB2\fR.
.TP
\fB\-foreground \fIcolor\fR
Sets the color of the interior of the bars.
\fB\-relief \fIstring\fR
Specifies the 3-D effect desired for bars. \fIRelief\fR indicates how
the interior of the bar should appear relative to the surface of the
-chart; for example, \f(CWraised\fR means the bar should appear to
+chart; for example, \fBraised\fR means the bar should appear to
protrude from the bar chart, relative to the surface of the plotting
-area. The default is \f(CWraised\fR.
+area. The default is \fBraised\fR.
.TP
\fB\-stipple \fIbitmap\fR
Specifies a stipple pattern with which to draw the bars. If
-\fIbitmap\fR is \f(CW""\fR, then the bar is drawn in a solid fashion.
+\fIbitmap\fR is \fB""\fR, then the bar is drawn in a solid fashion.
.TP
\fB\-type \fIelemType\fR
Specifies the type of element the pen is to be used with.
lines) on the same graph. The default type is "bar".
.PP
Pen configuration options may be also be set by the \fBoption\fR
-command. The resource class is \f(CWPen\fR. The resource names
+command. The resource class is \fBPen\fR. The resource names
are the names of the pens.
.CS
option add *Barchart.Pen.Foreground blue
\fB\-center \fIboolean\fR
Indicates whether the plot should be centered on the PostScript page. If
\fIboolean\fR is false, the plot will be placed in the upper left
-corner of the page. The default is \f(CW1\fR.
+corner of the page. The default is \fB1\fR.
.TP
\fB\-colormap \fIvarName\fR
\fIVarName\fR must be the name of a global array variable that
specifies a color mapping from the X color name to PostScript. Each
element of \fIvarName\fR must consist of PostScript code to set a
-particular color value (e.g. ``\f(CW1.0 1.0 0.0 setrgbcolor\fR''). When
+particular color value (e.g. ``\fB1.0 1.0 0.0 setrgbcolor\fR''). When
generating color information in PostScript, the array variable \fIvarName\fR
is checked if an element of the name as the color exists. If so, it uses
its value as the PostScript
.TP
\fB\-colormode \fImode\fR
Specifies how to output color information. \fIMode\fR must be either
-\f(CWcolor\fR (for full color output), \f(CWgray\fR (convert all colors to
-their gray-scale equivalents) or \f(CWmono\fR (convert foreground colors
+\fBcolor\fR (for full color output), \fBgray\fR (convert all colors to
+their gray-scale equivalents) or \fBmono\fR (convert foreground colors
to black and background colors to white). The default mode is
-\f(CWcolor\fR.
+\fBcolor\fR.
.TP
\fB\-fontmap \fIvarName\fR
\fIVarName\fR must be the name of a global array variable that
attempt to guess what PostScript font to use. This works only for
fonts whose foundry property is \fIAdobe\fR (such as Times, Helvetica,
Courier, etc.). If all of this fails then the font defaults to
-\f(CWHelvetica-Bold\fR.
+\fBHelvetica-Bold\fR.
.TP
\fB\-decorations \fIboolean\fR
Indicates whether PostScript commands to generate color backgrounds and 3-D
borders will be output. If \fIboolean\fR is false, the graph will
background will be white and no 3-D borders will be generated. The
-default is \f(CW1\fR.
+default is \fB1\fR.
.TP
\fB\-height \fIpixels\fR
Sets the height of the plot. This lets you print the bar chart with a
height different from the one drawn on the screen. If
\fIpixels\fR is 0, the height is the same as the widget's height.
-The default is \f(CW0\fR.
+The default is \fB0\fR.
.TP
\fB\-landscape \fIboolean\fR
If \fIboolean\fR is true, this specifies the printed area is to be
area runs along the short dimension of the page (``portrait''
orientation); in rotated output the X\-axis runs along the long
dimension of the page (``landscape'' orientation). Defaults to
-\f(CW0\fR.
+\fB0\fR.
.TP
\fB\-maxpect \fIboolean\fR
Indicates to scale the plot so that it fills the PostScript page.
The aspect ratio of the barchart is still retained. The default is
-\f(CW0\fR.
+\fB0\fR.
.TP
\fB\-padx \fIpad\fR
Sets the horizontal padding for the left and right page borders. The
two screen distances. If \fIpad\fR has two elements, the left border is padded
by the first distance and the right border by the second. If
\fIpad\fR has just one distance, both the left and right borders are
-padded evenly. The default is \f(CW1i\fR.
+padded evenly. The default is \fB1i\fR.
.TP
\fB\-pady \fIpad\fR
Sets the vertical padding for the top and bottom page borders. The
two screen distances. If \fIpad\fR has two elements, the top border is padded
by the first distance and the bottom border by the second. If
\fIpad\fR has just one distance, both the top and bottom borders are
-padded evenly. The default is \f(CW1i\fR.
+padded evenly. The default is \fB1i\fR.
.TP
\fB\-paperheight \fIpixels\fR
Sets the height of the postscript page. This can be used to select
between different page sizes (letter, A4, etc). The default height is
-\f(CW11.0i\fR.
+\fB11.0i\fR.
.TP
\fB\-paperwidth \fIpixels\fR
Sets the width of the postscript page. This can be used to select
between different page sizes (letter, A4, etc). The default width is
-\f(CW8.5i\fR.
+\fB8.5i\fR.
.TP
\fB\-width \fIpixels\fR
Sets the width of the plot. This lets you generate a plot
of a width different from that of the widget. If \fIpixels\fR
is 0, the width is the same as the widget's width. The default is
-\f(CW0\fR.
+\fB0\fR.
.PP
Postscript configuration options may be also be set by the
\fBoption\fR command. The resource name and class are
-\f(CWpostscript\fR and \f(CWPostscript\fR respectively.
+\fBpostscript\fR and \fBPostscript\fR respectively.
.CS
option add *Barchart.postscript.Decorations false
option add *Barchart.Postscript.Landscape true
.PP
Markers, in contrast to elements, don't affect the scaling of the
coordinate axes. They can also have \fIelastic\fR coordinates
-(specified by \f(CW-Inf\fR and \f(CWInf\fR respectively) that translate
+(specified by \fB-Inf\fR and \fBInf\fR respectively) that translate
into the minimum or maximum limit of the axis. For example, you can
place a marker so it always remains in the lower left corner of the
-plotting area, by using the coordinates \f(CW-Inf\fR,\f(CW-Inf\fR.
+plotting area, by using the coordinates \fB-Inf\fR,\fB-Inf\fR.
.PP
The following operations are available for markers.
.TP
.sp
If all arguments are specified then a new binding is created, replacing
any existing binding for the same \fIsequence\fR and \fItagName\fR.
-If the first character of \fIcommand\fR is \f(CW+\fR then \fIcommand\fR
+If the first character of \fIcommand\fR is \fB+\fR then \fIcommand\fR
augments an existing binding rather than replacing it.
If no \fIcommand\fR argument is provided then the command currently
associated with \fItagName\fR and \fIsequence\fR (it's an error occurs
events for markers are handled. Each tag in the list matching the
current event sequence will have its Tcl command executed. Implicitly
the name of the marker is always the first tag in the list.
-The default value is \f(CWall\fR.
+The default value is \fBall\fR.
.TP
\fB\-coords \fIcoordList\fR
Specifies the coordinates of the marker. \fICoordList\fR is
can take either two or four coordinates (if four, they represent the
corners of the bitmap). Line markers
need at least four coordinates, polygons at least six.
-If \fIcoordList\fR is \f(CW""\fR, the marker will not be displayed.
-The default is \f(CW""\fR.
+If \fIcoordList\fR is \fB""\fR, the marker will not be displayed.
+The default is \fB""\fR.
.TP
\fB\-element \fIelemName\fR
Links the marker with the element \fIelemName\fR. The marker is
drawn only if the element is also currently displayed (see the
-element's \fBshow\fR operation). If \fIelemName\fR is \f(CW""\fR, the
-marker is always drawn. The default is \f(CW""\fR.
+element's \fBshow\fR operation). If \fIelemName\fR is \fB""\fR, the
+marker is always drawn. The default is \fB""\fR.
.TP
\fB\-hide \fIboolean\fR
Indicates whether the marker is drawn. If \fIboolean\fR is true,
-the marker is not drawn. The default is \f(CWno\fR.
+the marker is not drawn. The default is \fBno\fR.
.TP
\fB\-mapx \fIxAxis\fR
Specifies the X\-axis to map the marker's X\-coordinates onto.
-\fIXAxis\fR must the name of an axis. The default is \f(CWx\fR.
+\fIXAxis\fR must the name of an axis. The default is \fBx\fR.
.TP
\fB\-mapy \fIyAxis\fR
Specifies the Y\-axis to map the marker's Y\-coordinates onto.
-\fIYAxis\fR must the name of an axis. The default is \f(CWy\fR.
+\fIYAxis\fR must the name of an axis. The default is \fBy\fR.
.TP
\fB\-name \fImarkerId\fR
Changes the identifier for the marker. The identifier \fImarkerId\fR
Indicates whether the marker is drawn below/above data
elements. If \fIboolean\fR is true, the marker is be drawn
underneath the data elements. Otherwise, the marker is
-drawn on top of the element. The default is \f(CW0\fR.
+drawn on top of the element. The default is \fB0\fR.
.TP
\fB\-xoffset \fIpixels\fR
Specifies a screen distance to offset the marker horizontally.
-\fIPixels\fR is a valid screen distance, such as \f(CW2\fR or \f(CW1.2i\fR.
-The default is \f(CW0\fR.
+\fIPixels\fR is a valid screen distance, such as \fB2\fR or \fB1.2i\fR.
+The default is \fB0\fR.
.TP
\fB\-yoffset \fIpixels\fR
Specifies a screen distance to offset the markers vertically.
-\fIPixels\fR is a valid screen distance, such as \f(CW2\fR or \f(CW1.2i\fR.
-The default is \f(CW0\fR.
+\fIPixels\fR is a valid screen distance, such as \fB2\fR or \fB1.2i\fR.
+The default is \fB0\fR.
.PP
Marker configuration options may also be set by the \fBoption\fR command.
-The resource class is either \f(CWBitmapMarker\fR, \f(CWImageMarker\fR,
-\f(CWLineMarker\fR, \f(CWPolygonMarker\fR, \f(CWTextMarker\fR, or \f(CWWindowMarker\fR,
+The resource class is either \fBBitmapMarker\fR, \fBImageMarker\fR,
+\fBLineMarker\fR, \fBPolygonMarker\fR, \fBTextMarker\fR, or \fBWindowMarker\fR,
depending on the type of marker. The resource name is the name of the
marker.
.CS
.TP
\fIpathName \fBmarker create \fItype\fR ?\fIoption value\fR?...
Creates a marker of the selected type. \fIType\fR may be either
-\f(CWtext\fR, \f(CWline\fR, \f(CWbitmap\fR, \f(CWimage\fR, \f(CWpolygon\fR, or
-\f(CWwindow\fR. This command returns the marker identifier,
+\fBtext\fR, \fBline\fR, \fBbitmap\fR, \fBimage\fR, \fBpolygon\fR, or
+\fBwindow\fR. This command returns the marker identifier,
used as the \fImarkerId\fR argument in the other marker-related
commands. If the \fB\-name\fR option is used, this overrides the
normal marker identifier. If the name provided is already used for
without the marker.\fR.
.TP
\fIpathName \fBmarker exists \fImarkerId\fR
-Returns \f(CW1\fR if the marker \fImarkerId\fR exists and \f(CW0\fR
+Returns \fB1\fR if the marker \fImarkerId\fR exists and \fB0\fR
otherwise.
.TP
\fIpathName \fBmarker names\fR ?\fIpattern\fR?
.TP
\fIpathName \fBmarker type \fImarkerId\fR
Returns the type of the marker given by \fImarkerId\fR, such as
-\f(CWline\fR or \f(CWtext\fR. If \fImarkerId\fR is not a valid a marker
-identifier, \f(CW""\fR is returned.
+\fBline\fR or \fBtext\fR. If \fImarkerId\fR is not a valid a marker
+identifier, \fB""\fR is returned.
.SS "BITMAP MARKERS"
A bitmap marker displays a bitmap. The size of the
bitmap is controlled by the number of coordinates specified. If two
Same as the \fB\-fill\fR option.
.TP
\fB\-bitmap \fIbitmap\fR
-Specifies the bitmap to be displayed. If \fIbitmap\fR is \f(CW""\fR,
-the marker will not be displayed. The default is \f(CW""\fR.
+Specifies the bitmap to be displayed. If \fIbitmap\fR is \fB""\fR,
+the marker will not be displayed. The default is \fB""\fR.
.TP
\fB\-fill \fIcolor\fR
Sets the background color of the bitmap. If \fIcolor\fR is the empty
string, no background will be transparent. The default background color is
-\f(CW""\fR.
+\fB""\fR.
.TP
\fB\-foreground \fIcolor\fR
Same as the \fB\-outline\fR option.
\fB\-mask \fImask\fR
Specifies a mask for the bitmap to be displayed. This mask is a bitmap
itself, denoting the pixels that are transparent. If \fImask\fR is
-\f(CW""\fR, all pixels of the bitmap will be drawn. The default is
-\f(CW""\fR.
+\fB""\fR, all pixels of the bitmap will be drawn. The default is
+\fB""\fR.
.TP
\fB\-outline \fIcolor\fR
-Sets the foreground color of the bitmap. The default value is \f(CWblack\fR.
+Sets the foreground color of the bitmap. The default value is \fBblack\fR.
.TP
\fB\-rotate \fItheta\fR
Sets the rotation of the bitmap. \fITheta\fR is a real number
representing the angle of rotation in degrees. The marker is first
rotated and then placed according to its anchor position. The default
-rotation is \f(CW0.0\fR.
+rotation is \fB0.0\fR.
.SS "IMAGE MARKERS"
A image marker displays an image. Image markers are
created with the marker's \fBcreate\fR operation in the form:
\fB\-anchor \fIanchor\fR
\fIAnchor\fR tells how to position the image relative to the
positioning point for the image. For example, if \fIanchor\fR
-is \f(CWcenter\fR then the image is centered on the point; if
-\fIanchor\fR is \f(CWn\fR then the image will be drawn such that
+is \fBcenter\fR then the image is centered on the point; if
+\fIanchor\fR is \fBn\fR then the image will be drawn such that
the top center point of the rectangular region occupied by the
image will be at the positioning point.
-This option defaults to \f(CWcenter\fR.
+This option defaults to \fBcenter\fR.
.TP
\fB\-image \fIimage\fR
Specifies the image to be drawn.
-If \fIimage\fR is \f(CW""\fR, the marker will not be
-drawn. The default is \f(CW""\fR.
+If \fIimage\fR is \fB""\fR, the marker will not be
+drawn. The default is \fB""\fR.
.SS "LINE MARKERS"
A line marker displays one or more connected line segments.
Line markers are created with marker's \fBcreate\fR operation in the form:
Sets the dash style of the line. \fIDashList\fR is a list of up to 11
numbers that alternately represent the lengths of the dashes and gaps
on the line. Each number must be between 1 and 255. If
-\fIdashList\fR is \f(CW""\fR, the marker line will be solid.
+\fIdashList\fR is \fB""\fR, the marker line will be solid.
.TP
\fB\-fill \fIcolor\fR
Sets the background color of the line. This color is used with
striped lines (see the \fB\-fdashes\R option). If \fIcolor\fR is
the empty string, no background color is drawn (the line will be
-dashed, not striped). The default background color is \f(CW""\fR.
+dashed, not striped). The default background color is \fB""\fR.
.TP
\fB\-linewidth \fIpixels\fR
Sets the width of the lines.
-The default width is \f(CW0\fR.
+The default width is \fB0\fR.
.TP
\fB\-outline \fIcolor\fR
-Sets the foreground color of the line. The default value is \f(CWblack\fR.
+Sets the foreground color of the line. The default value is \fBblack\fR.
.TP
\fB\-stipple \fIbitmap\fR
Specifies a stipple pattern used to draw the line, rather than
a solid line.
\fIBitmap\fR specifies a bitmap to use as the stipple
-pattern. If \fIbitmap\fR is \f(CW""\fR, then the
-line is drawn in a solid fashion. The default is \f(CW""\fR.
+pattern. If \fIbitmap\fR is \fB""\fR, then the
+line is drawn in a solid fashion. The default is \fB""\fR.
.SS "POLYGON MARKERS"
A polygon marker displays a closed region described as two or more
connected line segments. It is assumed the first and
Sets the dash style of the outline of the polygon. \fIDashList\fR is a
list of up to 11 numbers that alternately represent the lengths of
the dashes and gaps on the outline. Each number must be between 1 and
-255. If \fIdashList\fR is \f(CW""\fR, the outline will be a solid line.
+255. If \fIdashList\fR is \fB""\fR, the outline will be a solid line.
.TP
\fB\-fill \fIcolor\fR
-Sets the fill color of the polygon. If \fIcolor\fR is \f(CW""\fR, then
+Sets the fill color of the polygon. If \fIcolor\fR is \fB""\fR, then
the interior of the polygon is transparent.
-The default is \f(CWwhite\fR.
+The default is \fBwhite\fR.
.TP
\fB\-linewidth \fIpixels\fR
Sets the width of the outline of the polygon. If \fIpixels\fR is zero,
-no outline is drawn. The default is \f(CW0\fR.
+no outline is drawn. The default is \fB0\fR.
.TP
\fB\-outline \fIcolor\fR
Sets the color of the outline of the polygon. If the polygon is
stippled (see the \fB\-stipple\fR option), then this represents the
-foreground color of the stipple. The default is \f(CWblack\fR.
+foreground color of the stipple. The default is \fBblack\fR.
.TP
\fB\-stipple \fIbitmap\fR
Specifies that the polygon should be drawn with a stippled pattern
rather than a solid color. \fIBitmap\fR specifies a bitmap to use as
-the stipple pattern. If \fIbitmap\fR is \f(CW""\fR, then the polygon is
+the stipple pattern. If \fIbitmap\fR is \fB""\fR, then the polygon is
filled with a solid color (if the \fB\-fill\fR option is set). The
-default is \f(CW""\fR.
+default is \fB""\fR.
.SS "TEXT MARKERS"
A text marker displays a string of characters on one or more lines of
text. Embedded newlines cause line breaks. They may be used to
\fB\-anchor \fIanchor\fR
\fIAnchor\fR tells how to position the text relative to the
positioning point for the text. For example, if \fIanchor\fR is
-\f(CWcenter\fR then the text is centered on the point; if
-\fIanchor\fR is \f(CWn\fR then the text will be drawn such that the
+\fBcenter\fR then the text is centered on the point; if
+\fIanchor\fR is \fBn\fR then the text will be drawn such that the
top center point of the rectangular region occupied by the text will
-be at the positioning point. This default is \f(CWcenter\fR.
+be at the positioning point. This default is \fBcenter\fR.
.TP
\fB\-background \fIcolor\fR
Same as the \fB\-fill\fR option.
.TP
\fB\-font \fIfontName\fR
Specifies the font of the text. The default is
-\f(CW*-Helvetica-Bold-R-Normal-*-120-*\fR.
+\fB*-Helvetica-Bold-R-Normal-*-120-*\fR.
.TP
\fB\-fill \fIcolor\fR
Sets the background color of the text. If \fIcolor\fR is the empty
string, no background will be transparent. The default background color is
-\f(CW""\fR.
+\fB""\fR.
.TP
\fB\-foreground \fIcolor\fR
Same as the \fB\-outline\fR option.
\fB\-justify \fIjustify\fR
Specifies how the text should be justified. This matters only when
the marker contains more than one line of text. \fIJustify\fR must be
-\f(CWleft\fR, \f(CWright\fR, or \f(CWcenter\fR. The default is
-\f(CWcenter\fR.
+\fBleft\fR, \fBright\fR, or \fBcenter\fR. The default is
+\fBcenter\fR.
.TP
\fB\-outline \fIcolor\fR
-Sets the color of the text. The default value is \f(CWblack\fR.
+Sets the color of the text. The default value is \fBblack\fR.
.TP
\fB\-padx \fIpad\fR
Sets the padding to the left and right exteriors of the text.
has two elements, the left side of the text is padded by the first
distance and the right side by the second. If \fIpad\fR has just one
distance, both the left and right sides are padded evenly. The
-default is \f(CW4\fR.
+default is \fB4\fR.
.TP
\fB\-pady \fIpad\fR
Sets the padding above and below the text. \fIPad\fR can be a list of
one or two screen distances. If \fIpad\fR has two elements, the area above the
text is padded by the first distance and the area below by the second.
If \fIpad\fR is just one distance, both the top and bottom areas
-are padded evenly. The default is \f(CW4\fR.
+are padded evenly. The default is \fB4\fR.
.TP
\fB\-rotate \fItheta\fR
Specifies the number of degrees to rotate the text. \fITheta\fR is a
real number representing the angle of rotation. The marker is first
rotated along its center and is then drawn according to its anchor
-position. The default is \f(CW0.0\fR.
+position. The default is \fB0.0\fR.
.TP
\fB\-text \fItext\fR
Specifies the text of the marker. The exact way the text is
\fB\-anchor \fIanchor\fR
\fIAnchor\fR tells how to position the widget relative to the
positioning point for the widget. For example, if \fIanchor\fR is
-\f(CWcenter\fR then the widget is centered on the point; if \fIanchor\fR
-is \f(CWn\fR then the widget will be displayed such that the top center
+\fBcenter\fR then the widget is centered on the point; if \fIanchor\fR
+is \fBn\fR then the widget will be displayed such that the top center
point of the rectangular region occupied by the widget will be at the
-positioning point. This option defaults to \f(CWcenter\fR.
+positioning point. This option defaults to \fBcenter\fR.
.TP
\fB\-height \fIpixels\fR
Specifies the height to assign to the marker's window. If this option
-isn't specified, or if it is specified as \f(CW""\fR, then the window is
+isn't specified, or if it is specified as \fB""\fR, then the window is
given whatever height the widget requests internally.
.TP
\fB\-width \fIpixels\fR
Specifies the width to assign to the marker's window. If this option
-isn't specified, or if it is specified as \f(CW""\fR, then the window is
+isn't specified, or if it is specified as \fB""\fR, then the window is
given whatever width the widget requests internally.
.TP
\fB\-window \fIpathName\fR
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