Re: [Gnuplot-info] How to plot mesh with hole.

[Manish G. <mg...@no...>]

Hans-Bernhard Br=F6ker wrote:

> Manish Goel wrote:
>
>> But I want to do this thing with single data set for this purpose. I=20
>> have tried using undefined value; point mentioned in gnuplot.pdf on pa=
ge
>> 44 that gnuplot tool supresses those points whose z-cordinate value is
>> undefined (1/0).=20
>
>
> Yes.  But that doesn't mean you can put the actual string "(1/0)" into=20
> a data file and expect that to work the same way.  1/0 is just a way=20
> to generate the value infinity in a gnuplot command script.  But data=20
> files aren't scripts.  You'll have to use 'set missing' --- and=20
> possibly convince Ethan that this is the kind of example that should=20
> define how that's to be interpreted.
>
>
>
>
>
I agree your point that (1/0) is string read from datafile not a value=20
but after using ($3) it is converted into value and behave correctly.=20
But my problem is to get a mesh from single dataset with a hole in it.=20
What I mean to say is that if you make any value of Z in grided dataset=20
as undefined and try to use splot command on it to plot the mesh then=20
you won't get the one. what you get are only Isolines and not any=20
x-Isolines. That's the problem that gnuplot don't plot x-isolines if for=20
any (x,y) coordinate value of Z is undefined (which is required for=20
plotting hole).

--
Manish Goel
(mg...@no...)