Re: splot contours: how to silence a bogus warning?

[Ethan A M. <me...@uw...>]

On Tuesday, 19 May 2020 22:52:48 PDT Dima Kogan wrote:
> Hi. I'm probably doing this wrong, but in case I'm not, can somebody
> give me a pointer?
> 
> I'm making an splot with "set view map". There're two things in the
> splot command:
> 
> - gridded data. this is for contours
> 
> - a line. the is just another thing to plot; no contours needed or
>   wanted
> 
> Gnuplot really wants to contour everything, so it gives me a warning
> aobut not being able to contour the line:
> 
>   "/tmp/tst.gp" line 15: warning: Cannot contour non grid data. Please use "set dgrid3d".
> 
> The plot works otherwise. How can I tell gnuplot what specifically I
> want contoured?

    set style data lines
    set contour
    plot $D1 matrix nosurface,  $D2 using 1:2:3 notitle nocontour

	Ethan


> A demo script:
> 
> 
> set view map
> set contour surface
> set cntrparam levels incremental 10,1,20
> splot '-' matrix with lines nosurface ,'-' using 1:2:3 notitle with lines lw 3
> 21.116659897839263 19.791039827138583 18.227675240475808
> 17.237090114458017 16.05638264955801 14.720006247692512
> 13.875609237866147 12.820842598325108 11.685987645475555
> 
> e
> .539 .853 0.0
> 0 .1706 0.0
> 0 .2986 0.0
> e
> 
> 
> Thanks!
> 
> 
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-- 
Ethan A Merritt
Biomolecular Structure Center,  K-428 Health Sciences Bldg
MS 357742,   University of Washington, Seattle 98195-7742