Re: pm3dcolors demo broken

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

On 07/02/2015 12:24 AM, tmacchant wrote:
> In the last post I have generated the plot in wxt terminal.
> That worked correctly
>
> However, as in written web site I have re-generate it using
>
> set terminal png transparent nocrop enhanced size 450,320 font "arial,8"
> set output 'pm3dcolors.1.png'
> load 'C:\Programs\gp510-64\demo\pm3dcolors.dem'
> set output
>
> <http://gnuplot.10905.n7.nabble.com/file/n19585/pm3dcolors.png>
>
> This is the same as on the web site.
>
> Is this a png terminal bug?

Possibly, but I don't think so.  It may be that libgd is limited in 
terms of colors.  In term/gd.trm is stated:

   /* TODO: how to recover from a multiplot with two colour pm3d maps?
      They must use the same palette! Or palette size must be
      restricted to certain number of colours---a new user's option
   */

There is an immediate solution, which is to add the option truecolor, i.e.,

set term png truecolor

works for me.


> Is this better to be filed into bug ticket?

If you wish.

Dan