Re: [Gnuplot-info] how to plot a line in the contour map

[Thomas S. <t.s...@fz...>]

are you looking for e.g. something like this:

http://old.nabble.com/file/p28822118/ts.gif 

a coloured surface with lines where z=10?

set size square
set pm3d map
set contour surface
set cntrparam levels discr 10
set samples 20
set isosamples 20
splot x*y


thorneliu wrote:
> 
> Well,thanks
> But I could not get a line (z=0) in my previos figure.
> And another question:
> By the way, what can i do if I wanna just plot a line (not a contour line)
> in this plot?
> for example : 
> I have another matrix file
> I want to plot the contour figure as the figure I inserted before, and I
> want to draw a line where Z is the minimums in the 
> x y plane.
> what can I do?
> I hope I have made myself understood.
> Thanks.
> 
> Thomas Sefzick wrote:
>> 
>> so you want not to plot 'just a line' but a contour line,
>> that's easy:
>> 
>> set contour surface
>> set cntrparam levels discrete 0
>> set pm3d map
>> splot 'matrix.dat' matrix
>> 
> 
> 

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