Re: [Gnuplot-info] 2D spatial grpahs

[Hans-Bernhard B. <HBB...@t-...>]

Am 25.06.2010 23:07, schrieb Peter Peyman Puk:

> My input data looks like so
> [x,y,z][x,y,z][x,y,z][x,y,z][x,y,z]
> [x,y,z][x,y,z][x,y,z][x,y,z][x,y,z]
> [x,y,z][x,y,z][x,y,z][x,y,z][x,y,z]
> [x,y,z][x,y,z][x,y,z][x,y,z][x,y,z]
> [x,y,z][x,y,z][x,y,z][x,y,z][x,y,z]
> [x,y,z][x,y,z][x,y,z][x,y,z][x,y,z]
>
> Therefore, it is the collection of z values for a rectangular
> environment

Hmm... that description doesn't seem to fit the pattern you showed 
above.  That one's a collection of [x,y,z] triplets in rectangular grid.

> I say "quasi-3D" because I want the third dimension (z) to be a color,
> instead of a height value. My problem is that I don't even know how to
> do google searches for this. Is it a 2D spatial graph, or a 3D color
> intensity graph...

Neither.  It's called a 2D color-mapped graph, a.k.a. "false color 
diagram".  In gnuplot, you want to look up 'help pm3d' to find out to do 
a plot like that.  Oh, and you'll have to re-structure to actually be 
either a matrix of z values, or a three-column data file of x,y,z 
triplets, that express the rectangular grid structure in a different way 
(--> help datafile)