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Welcome to the plotxy wiki!

You need a Mac running 10.6 (and possibly above) with X11 installed (/usr/X11/) for this to "work". The idea is this:

plotxy xy.csv

This will read (twice) the xy.csv file and create a (large) PNG called xy.csv.png in the input file's directory.

plotxy xy.csv 1000

This will make the image 1000x500 pixels

plotxy xy.csv 1000 1000

This will make the image 1000x1000 pixels

plotxy xy.csv 1000 500 100 50 20 5

Creates an image of 1000x500 pixels from the xy.csv file and sets the 4 colour limits to 100, 50, 20, and 5 for the number if times a pixel has to be "hit" to light it up with the four different colours.