Re: [Gnuplot-info] non-working linewidth and dashpattern in epslatex terminal? (was: How to get different dashes for the splot contour in epslatex term?)

[Ethan A M. <eam...@gm...>]

On Sunday, 15 October 2017 13:06:50 David Kastrup wrote:
> 
> So I now tried compiling 5.2.0.
> 
> No change in the epslatex terminal: it would appear that _only_ the
> linewidth and the dash pattern for linestyle 1 are ever consulted and
> are used for _all_ lines.  Linecolor can be changed per line style, but
> pretty much nothing else.

Correct.  It steps through sequential line colors.

> Anybody have a good idea for where to patch this up?

The following 1-line change might or might not produce acceptable
results for you.   One problem is that the line segments making up
a contour are not necessarily drawn in order and some terminals
reset the dash pattern for each segment, leading to mostly solid
or mostly missing lines rather than the desired dash pattern.
For other terminal types this doesn't seem to be a problem.

If this does work for you please report back. 
We could make it an optional setting of some sort.

%%%%%%%%%%%%%%%%%%%%%%%%%%%%
--- gnuplot52/src/graph3d.c     2017-09-15 20:26:48.393406844 -0700
+++ test52/src/graph3d.c        2017-10-15 10:50:39.698779538 -0700
@@ -1265,6 +1265,8 @@ do_3dplot(
                                /* otherwise the following would be sufficient */
                                load_linetype(&ls, this_plot->hidden3d_top_linetype + ic);
                            }
+/* DEBUG */                /* increment dashtype also */
+/* DEBUG */                thiscontour_lp_properties.d_type = ic;
                            thiscontour_lp_properties.pm3d_color = ls.pm3d_color;
                            term_apply_lp_properties(&thiscontour_lp_properties);
                        }
%%%%%%%%%%%%%%%%%%%%%%%%%%%%