Re: Is "border" in pm3d redundant?

[Ethan A M. <sf...@us...>]

On Thursday, 25 June, 2015 14:05:02 Daniel J Sebald wrote:
> On 06/25/2015 01:51 PM, Ethan A Merritt wrote:
> > On Thursday, 25 June, 2015 12:54:55 Daniel J Sebald wrote:
> >
> >>  I was working on an application for which there's to be color surface
> >
> >>  and mesh lines. I began down the route of "border" feature for pm3d,
> >
> >>  which is fairly new. But after a while of not getting what I'd hoped
> >
> >>  for in hidden3d mode, I began to wonder if pm3d/border is redundant
> >
> >>  because gnuplot almost has such capability without the "border" feature.
> >
> >>  Having
> >
> >>
> >
> >>  splot x+y with pm3d border <line characteristics>
> >
> >>
> >
> >>  is sort of re-implementing
> >
> >>
> >
> >>  splot x+y with pm3d, x+y with lines <line characteristics>
> >
> >>
> >
> >>  In the long run we'd like some type of surface color control and true
> >
> >>  hidden3d surface removal. I know pm3d and hidden3d don't combine just
> >
> >>  right, but that doesn't mean the syntax can't trend in a desired
> > direction.
> >
> >>
> >
> >>  The general principle is that the user may want to use the same function
> >
> >>  or data set for multiple plot elements, e.g.,
> >
> >>
> >
> >>  splot "foo" with lines <line chars> [and] surfels <face chars>
> >
> >>
> >
> >>  (or "polygons", "faces", whatever). However, the "and" concept kind of
> >
> >>  exists already with the special "-" filename:
> >
> >>
> >
> >>  splot "foo" with lines <line chars>,
> >
> >>  "-" with surfels <face chars>
> >
> >>
> >
> >>  That is essentially saying "and" because there is no new function/file
> >
> >>  specification.
> >
> > I don't understand. Maybe you mean "" rather than "-"?
> 
> Yes, something like that.  I was just typing from memory, recalling that 
> there is some syntax that utilizes the previous data.
> 
> 
> > I really don't see any need for an "and" syntax.
> 
> The title of the thread is "Is border in pm3d redundant?"  The question 
> is whether "border" is needed since what it achieves (which is plot this 
> "and" that using the same data file) already essentially exists in a 
> more robust and conceptually consistent manner.
> 
> Is there something beneficial to "border" beyond the syntax that already 
> existed?

I don't know of another way to get the equivalent of 

  set pm3d hidden3d border lc "black"
  splot x*y with pm3d

If you try to draw the lines in a separate plot clause, the
hidden3d effect is lost.

	Ethan


> 
> Dan
> 
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