ps-bar-utils

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Ps-bar-utils is a project mainly written in ..., it's free.

Bar chart library for Postscript

ps-bar-utils: A postscript library for drawing bar charts, with error bars (c) Greg Benison, 2011

You use the file by importing 'bar-utils.ps' into a postscript file. See file 'example-1.ps' for a demonstration of usage.

The API consists of the following functions (arguments given first, the way they would be passed in postscript postfix notation):

bar % Append a bar to the graph of height 'y' and error 'dy'

     next-category     % Switch to a new category.  The value of /category-name will be
                       % applied as a label to the just-closed category.

legend % Append a legend entry. is either a string or a procedure % which draws some kind of label. plot-label % draw a label at the top of the plot y-label % Apply a label to the Y axis. can be either a string or % a procedure which draws the label. y-tic-with-interval % Draw tic marks every 'delta' positions along the y-axis.

In addition there are symbols whose definition can be changed to alter the plot appearance. These appear at the top of bar-utils.ps. See the example for usage.

barstyles -- This array controls bar appearance; see definition in file bar-width bar-margin category-margin world-y-max world-y-min plot-height category-name crossbar-linewidth crossbar-width tic-font tic-length label-font legend-margin-x legend-top-margin legend-dy legend-box-size y-label-margin plot-label-font plot-label-margin-x plot-label-margin-y

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