Re: [slightly OT] plotting a (pm3d) closed surface with arbitrary vertices

[<HBB...@t-...>]

Dr. Johannes Zellner wrote:

> What I'd need now, is to invalidate the data outside some distance to
> the data points. 

Sorry, no can do.  You must have seen me state this before: gnuplot is a 
plotting program, not a general-purpose number crunching engine.  There 
are limits to what it'll do, and you've just hit one.

 > Suppose I've data whithin a banana shape in x, y and
> like to have colored pm3d rectangles only when x, y are near the banana
> (which is defined by the scatter x, y data points).

In its general case it's already a surprisingly tricky task to come up 
with a usable formal definition of such "banana shapes" that computers 
can test, much less generate by themselves.