Re: 'nohidden3d' option behavior

[Daniel J S. <dan...@ie...>]

On 05/28/2016 01:55 PM, Hans-Bernhard Bröker wrote:
> Guys,
>
> is it possible you've just totally forgotten about 'set surface explicit'?

Yes.


> It seems 'hidden3d' was never told about it, but in principle, that's
> the command that should make the change Dan is looking for, i.e. it
> could sensibly be expected that
>
>      set surface explicit
>      set hidden3d
>      splot x*y w surface, x*sin(y) w lines
>
> should yield a plot where the first graph is a hidden (and hiding)
> surface mesh, whereas the second is not just the usual pair of wire grills.

The description for "help set surface" does sound like it will result in 
a transparent mesh.  So, if this were to work as described, then putting 
gnuplot into "set surface explicit" would be close to the behavior I'm 
looking for, except there is no color surface control as is gained by 
pm3d.  It would be nice to eventually just combine pm3d/surface.

Anyway, as you noted, your example doesn't work, but thanks.  Neither 
does pulling the data in from a file:

   set surface explicit
   set hidden3d
   set table 'surfoos'
   splot x*y
   set table 'foomesh'
   splot x*sin(y)
   unset table
   splot 'surfoos' with surface, 'foomesh' with lines

The interesting thing to note about your example and the above is that 
the surface orientation, color-wise, is the opposite direction.  One is 
magenta and blue on "top" surfaces, the other is magenta and blue on 
"bottom" surfaces.  Is that also a bug?

Dan