Gnuplot question

[Michael Sallman <msallman@pro-ns.net>]

I realize this isn't the gnuplot mailing list, but I thought I'd take a 
shot anyway.

I have a file with 3 columns - x,y,z. How can I specify the color/style 
of the point at x,y based on the value of z?

Something like: "plot 'myfile' using 1:2 with points $3"


Thanks,

Mike