[Gnuplot-bugs] help on contour plot

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[Gnuplot-bugs] help on contour plot

by hania mohamed :: Rate this Message:

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Dear Mr/Mrs

I would be highely grateful if you could help on this.

I would like to plot a data file of 3 columns as a contour plot(density plot).
----------------
set pm3d map
set dgrid3d 10,10

 splot 'myfile'
------------------
But, it is giving me unclear

 plot, as the data file should plot a triangular , but the plot give me some rectangular meshed area and

 the triangular inside. I mean the triangular is surrounding by extra meshed area. How can I eliminate this area?


thanks



             


     
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Re: [Gnuplot-bugs] help on contour plot

by Hans-Bernhard Bröker-2 :: Rate this Message:

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hania mohamed wrote:

> I would like to plot a data file of 3 columns as a contour plot(density plot).

You're not making terribly much sense.  What's it going to be: a contour
plot, a density plot, or a colour map?  You say you want the first two,
but order the third:

> set pm3d map
> set dgrid3d 10,10
>
>  splot 'myfile'
> ------------------

> But, it is giving me unclear plot, as the data file should plot a
> triangular , but the plot give me some rectangular meshed area and
> the triangular inside.

I guess you're not quite aware of that, but: you asked gnuplot to do
exactly that.  The dgrid3d command transforms your data.  If you didn't
want that, you shouldn't have used dgrid3d.


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