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5.9.2 PostScript Graphing

(require 'eps-graph)

This is a graphing package creating encapsulated-PostScript files. Its motivations and design choice are described in http://people.csail.mit.edu/jaffer/Docupage/grapheps

A dataset to be plotted is taken from a 2-dimensional array. Corresponding coordinates are in rows. Coordinates from any pair of columns can be plotted.

— Function: create-postscript-graph filename.eps size elt1 ...

filename.eps should be a string naming an output file to be created. size should be an exact integer, a list of two exact integers, or #f. elt1, ... are values returned by graphing primitives described here.

create-postscript-graph creates an Encapsulated-PostScript file named filename.eps containing graphs as directed by the elt1, ... arguments.

The size of the graph is determined by the size argument. If a list of two integers, they specify the width and height. If one integer, then that integer is the width and the height is 3/4 of the width. If #f, the graph will be 800 by 600.

These graphing procedures should be called as arguments to create-postscript-graph. The order of these arguments is significant; PostScript graphics state is affected serially from the first elt argument to the last.

— Function: whole-page

Pushes a rectangle for the whole encapsulated page onto the PostScript stack. This pushed rectangle is an implicit argument to partition-page or setup-plot.