From help-request at octave dot org Thu Sep 22 11:28:05 2005
Subject: Re: Colors in plots and legend position
From: Quentin Spencer <qspencer at ieee dot org>
To: "John W. Eaton" <jwe at bevo dot che dot wisc dot edu>
CC: avraham <mavram at bezeqint dot net>, Javier Arantegui <arante@tecal.udl.es>,         help@octave.org
Date: Thu, 22 Sep 2005 11:20:48 -0500

John W. Eaton wrote:

>On 21-Sep-2005, avraham wrote:
>
>| 1-The number of colors offered by gnuplot and gnuplot-based octave
>| graphics is very limited. I guess that the idea is that it is
>| easier to distinguish between curves with markedly different
>| colours and, if need be, different line types/thicknesses than
>| between close hues.
>| A different approach is taken by the eplot function of
>| octave-epstk. There you can define the color of the lines by the
>| RGB content. You may have a look into that.
>
>I recently noticed the following in the NEWS file for gnuplot (from
>the CVS archive):
>
>  News, changes and fixes since gnuplot version 4.0
>  =================================================
>  [...]
>  * NEW 3D plots can read RGB color triples as part of input data
>  * NEW linetype colors via "lt {palette {frac <val> | cb <val>}}"
>  * NEW linetype colors via "lt {rgbcolor {"name" | "#RRGGBB"}}"
>  * NEW palette and rgb linetype colors apply to all 2D and 3D plot elements
>
>jwe
>  
>

These features sound great. We've been hearing for a while about things 
in "gnuplot 4.1", but there's still no actual release. Are there any 
gnuplot developers who read this list? Can a release be expected any 
time soon? Some of these features are really needed to improve octave's 
graphics, but most users aren't willing to download CVS to get them, and 
I don't think it makes sense to start rewriting octave's plot interface 
to use them until a release exists.

-Quentin



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