🚀 go-pugleaf

Nico_Schl�mer@adobeforums.com wrote:
> hi!
> 
> i'm dealing with matrices here and want to plot its value into postscript. in fact, i just need a black spot where a matrix entry is not zero, white everywhere else. easy, isn't it?
> 
> particulary, my matrices have very few non-zero entries, so the ps file would only have a few black spots here and there.
> 
> now, what's the best way to write this in postscript? the first thing i tried was the image environment: works well as soon as you got used to the syntax, but the big disadvantage for me was that i have to explicitly code all the white pixels, so the eps file gets a lot bigger than needed (it feels).
> 
> the second thing i tried was defining a small "draw tiny box" command, then "move to" the non-zero spots, and evoke the function.
> that's better then the image way (the files are a lot smaller), but it still feels like a hack somehow.
> 
> do you have any hints or suggestions for the issue? are there any commands or environment that would be better suited?
> 
> all hints appreciated!
> 
> cheers,
> nico

Would something like this work for you?

%! Adobe-PS

/inch {72 mul} def
<</PageSize [8.5 inch 11 inch]>> setpagedevice

/MaxValue 10 def	% The max x or y value plotted
/GraphSize 8 inch def	% The width of the graph


/Scale	GraphSize MaxValue div def
.25 inch .5 inch translate
gsave .5 setgray 0 0 GraphSize GraphSize rectstroke grestore
Scale Scale scale
/Box 	{gsave translate 0 0 1 1 rectfill grestore} def

0 0 Box
1 1 Box
2 2 Box
3 3 Box
4 4 Box
5 5 Box
6 6 Box
7 7 Box
9 9 Box

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Jeff Coffield
www.digitalsynergyinc.com