See [Plots and charts] for further information.

This package was and is written by [AM].

Documentation can be found at http://tcllib.sourceforge.net/doc/plotchart.html 

A part of [tklib], a set of [tk]-related extension/widgets.

See some examples at [Plotchart gallery]. 

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[Bryan Oakley] 09-May-2005 I notice that the code uses [[$w cget -width]] everywhere it needs a value to compute the width of the graph. My first thought was that this seemed wrong -- it ought to use [[winfo width $w]] so that it will be drawn to fit the window in case the window grows because of the way it is packed/gridded. Of course, this also means the graph will shrink if the viewable portion of the canvas is less than the configured width/height of the canvas.

I can see a case for each behavior, so I'm wondering if it would be useful to have a configuration option such that one could do ''$plot configure -width "actual"'' or ''... -width "request"''. Of course, I can simulate that by adding code to do something like [[.canvas configure -width [[winfo width .canvas]] after I pack/grid it, but I'm not fond of that solution. 

[JE] What are the cases for the current behavior?  It seems to me that the actual width is always the right thing to use,
I can't think of when you'd want it to use the requested width (if the two differ).

A third option might be to specify an actual value, e.g. ''$plot configure -width 200'' for the case where you have a really large plot that you want to scroll around in a small canvas.

I'd be willing to contribute the code for this option if you think it would be useful.

[AM] (10 may 2005) I have not given much thought to this issue, I must admit. Resizing the plot's canvas may have to result in one of several things:
    * The plot is redrawn to fit the new size (using the new width and height)
    * The plot is redrawn to fit the new size but the ratio width/height remains the same
    * The plot remains as it is (for instance to enable scrolling ...)

I can see all of these happening - should there be an option for dealing with this?
Code contributions are welcomed of course.

[PWE] 20070806 Now I've started using plotchart, some comments/questions on the xy-plots. 1) If the title of the chart is long, it overwrites the text of the Y axis. 2) Is it possible to have a custom format for the X or Y axis labels. For instance when the X axis is time, to have the labels display dates? Something like blt's 
 axis configure myaxis -command myformat
3) Is it possible to have multiple charts on a single canvas? So one can make a report with multiple graphs, and print it on a single sheet of paper?

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%|[Category Command] | [Category GUI] | [Category Plotting]|%
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