[Gnuplot-info] missing grid points

[Zhong R. <re...@uc...>]

Hi,

My data are missing some grid points, but pm3d handles them
nicely when plotting a 3D colored surface, including the mesh.
 The missing data cause some triangles on the edge of the
surface, which is nice.  Now, I would like to draw the mesh
only without the filled color using "with lines".  This can
only be done when the data are complete.  Any missing grid
point will make the mesh into a set of lines.  How do I solve
this problem?  Here is the example:

set pm3d at s explicit ftriangles hidden3d 2
splot '-' u 1:2:4   w l, '-' u 1:2:5:6 w pm3d
   12   105    39 0 0.00157429 0.00157429
   13   105    39 0 0.00188351 0.00188351
   14   105    39 0 0.00189598 0.00189598
 # 15   105    39 0 0.00159423 0.00159423

   12   106    39 0 0.00212279 0.00212279
   13   106    39 0 0.00264768 0.00264768
   14   106    39 0 0.00267096 0.00267096
   15   106    39 0.943169 0.00217345 -0.940996

   12   107    39 0 0.00243417 0.00243417
   13   107    39 0.482842 0.00307471 -0.479767
   14   107    39 0.773999 0.0030999 -0.770899
   15   107    39 0.893751 0.00249588 -0.891255

   12   108    39 0.370829 0.00226043 -0.368569
   13   108    39 0.713331 0.00283619 -0.710495
   14   108    39 0.796778 0.0028588 -0.793919
   15   108    39 0.567752 0.00231596 -0.565436
e

   12   105    39 0 0.00157429 0.00157429
   13   105    39 0 0.00188351 0.00188351
   14   105    39 0 0.00189598 0.00189598
   15   105    39 0 0.00159423 0.00159423

   12   106    39 0 0.00212279 0.00212279
   13   106    39 0 0.00264768 0.00264768
   14   106    39 0 0.00267096 0.00267096
 # 15   106    39 0.943169 0.00217345 -0.940996

   12   107    39 0 0.00243417 0.00243417
   13   107    39 0.482842 0.00307471 -0.479767
   14   107    39 0.773999 0.0030999 -0.770899
   15   107    39 0.893751 0.00249588 -0.891255

   12   108    39 0.370829 0.00226043 -0.368569
   13   108    39 0.713331 0.00283619 -0.710495
   14   108    39 0.796778 0.0028588 -0.793919
   15   108    39 0.567752 0.00231596 -0.565436
e

Zhong