Michael Jinks wrote:
> I have a graphical representation problem to solve, and my graphics
> literacy is nearly nothing, so I'm hoping somebody here can tell me what
> tool I want for this.
>
> Imagine an X-Y graph, where the two vertices of the graph may be of
> varying length. We want to be able to plug in a set of numbers x (the
> length of the X axis), y (length of the Y axis), a (a number of
> equidistantly-spaced points along X) and b (a number of similar points
> along Y). Output should be a set of lines drawn perpendicular to each
> axis for each point along that axis; the axes should not be printed in
> the final output, only the lines.
>
> Up to now my friend has been drawing all those lines by hand in a vector
> drawing tool on a Mac, and I'm sure there has to be a much simpler way
> to generate patterns like that.
>
> Once we have the output, we need to be able to save it in some sort of
> reasonably portable graphics format to be overlaid on maps, and crop the
> images to cover irregular spaces. We have that part solved, it's just
> getting all the nice lines drawn without doing it manually that has us
> stumped.
>
> I'm pretty sure Red Hat comes with two or three ways to do this but
> nothing occurs to me as obvious. I'm sure the GIMP could do this, but
> I'm a GIMP weakling and don't know where to start. I tried looking at
> xfig and gnuplot, but without some examples to work from I'm swimming.
> So, if anybody does stuff like this, I'd love to know where to get a leg
> up.
I would start with the ImageMajick package. Lots of scriptable graphics
tools as well as a perl interface if you are so inclined.
Bret
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