Re: [Gnuplot-info] Help needed !

[Hans-Bernhard B. <br...@ph...>]

Fran Oliveira wrote:
> I have a datafile with x y z coordinates.
> 
> All I want to do is plot these points and link them to make a surface.

That's a lot less well-defined than you may think it is.  There are 
literally infinitely many surfaces that could be defined by those 
points.  Absent other information, the task of choosing among them is 
completely impossible for a computer program.

So if you want a surface, it's up to you to choose which one, and inform
gnuplot about that choice.  By far the best method would be to produce a 
gridded dataset instead of a cloud of unrelated point.  See 'help splot 
datafile' for what you have to do, and 'help glossary' to understand the 
terms used in there.

> However when I use:
> 
> set dgrid3d 160,160
> 
> It distorts my graph at the edges.

What does that mean.  What's distorted about them?  And how do you know 
that's only happening at the edges?