[Plplot-devel] Two issues

[Joao C. <jc...@fe...>]

Hi,

1-Currently the colored surface plots color scale themself using the maximum 
and minimum of the function z value, and ignoring the z axis values set by 
plw3d().

I think this is incorrect and can be observed in the interactive octave p14 
example -- as the amplitude of the function increases or decreases, the color 
of its peaks/valleys are always the same.
I can easily change this so that the maximum/minimum color of the function is 
a direct function of the z axis value. Shall I? Is there a code freeze?

2-It is very likely that some users won't get the xwin driver working. In the 
last release it happened for at least two or three of them and I tried to 
investigate it, but only one user has fully cooperate.

The common solution is to tell those users to define USE_DEFAULT_VISUAL in 
xwin.c.
It seems that all those users are using X terminals that support 
*simultaneously* 8 bit Pseudo Color and 16/24 bits True Color visuals (one of 
them also had Static Color). I couldn't reproduce the problem, because XFree 
can't use simultaneously both kind of visuals. Even if using Xnest.
So, the question is: shouldn't we define USE_DEFAULT_VISUAL in xwin.c? It 
seems to make no difference in my system. And in yours?

Maurice, you was the one still using 8 bit Pseudo Color visuals a couple of 
years ago. What do you think of this issue?

Joao