Re: pm3dcolors demo broken

[sfeam <sf...@us...>]

On Wednesday, 01 July 2015 10:24:49 PM 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?

The web site is generated using the pngcairo terminal.

The png (libgd) terminal by default creates a file with 
indexed colors, 245 colors maximum.  This is not enough
to create multiple smooth palettes.  To create files with
full 24-bit RGB color you must say

set term png truecolor ...

> Is this better to be filed into bug ticket?
>   Tatsuro

I do not think there is a bug here.

	Ethan