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Groups > comp.graphics.apps.gnuplot > #4022

Re: contour lines have points

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Am 31.07.2018 um 07:05 schrieb Jörg Buchholz:
> I would like to have points where the measuring point are, they are at
> the surface not at the contour lines. 
> 


But they aren't, those are the interpolated points from dgrid3d!

I agree it makes little sense to have points on the contour, except to
show the principle of how they are generated. Perhaps (and the key
implies that was intended, although that's probably an accident) they
should be omitted by default.

But you also can't give e.g. a different linewidth to the contour and
the 3d grid. You'll have to save the contours to a data block via "set
table $contours", switch off contour generation, and then (re)plot the
contours after making the pm3d plot via

  replot for [i=1:5] $contours index i us 1:2:(0) lc i lw 2

(assuming 5 contour lines and the base to be at z=0).

Anyway if you want to see your original datapoints instead of the
interpolated dgrid3d points, you have to add them on top of the pm3d
surface and contours.

I think the graph you envision is just a bit too complicated to be made
by just one single plot command. ;-)

Best, Karl

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Thread

contour lines have points Jörg Buchholz <bookwood4new@freenet.de> - 2018-07-30 15:13 +0200
  Re: contour lines have points Hans-Bernhard Bröker <HBBroeker@t-online.de> - 2018-07-30 21:10 +0200
    Re: contour lines have points Jörg Buchholz <bookwood4new@freenet.de> - 2018-07-31 07:05 +0200
      Re: contour lines have points Karl Ratzsch <mail.kfr@gmx.net> - 2018-07-31 09:42 +0200
        Re: contour lines have points Ethan Merritt <sfeam@users.sf.net> - 2018-07-31 20:08 +0000
          Re: contour lines have points Jörg Buchholz <bookwood4new@freenet.de> - 2018-08-01 07:56 +0200
        Re: contour lines have points Jörg Buchholz <bookwood4new@freenet.de> - 2018-08-01 07:42 +0200

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