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Re: gnuplot graphics toolkit bugs

From: Ben Abbott
Subject: Re: gnuplot graphics toolkit bugs
Date: Tue, 23 Jun 2015 13:41:46 -0400

> On Jun 23, 2015, at 12:58 PM, Daniel J Sebald <address@hidden> wrote:
> On 06/23/2015 08:58 AM, Ben Abbott wrote:
>>> On Jun 23, 2015, at 2:52 AM, Daniel J Sebald<address@hidden>
> [snip]
>>> https://savannah.gnu.org/bugs/?func=detailitem&item_id=43907
>>> bug #43907: OpenGL render code called even when gnuplot is graphics_toolkit
>>> Dan
>> Perhaps the most serious gnuplot 5 related bug is below. I’ve attached a 
>> patch to the bug report, but since I’m not able to build Octave 4.x on Mac 
>> OSX, I haven’t pushed it.
>>      http://savannah.gnu.org/bugs/?42838
>> Ben
> Well, there is a lot there for me to read, but let me just guess that this is 
> the issue where default EPS mode uses grayscale, not color.  And in gnuplot, 
> the grayscale mode translates any non-white color to black, technically 
> monochrome.

Yes. I think that is correct.

> I had addressed this somewhat in the changeset:
> https://savannah.gnu.org/bugs/?44187
> bug #44187: Bugs and modifications in print() with gnuplot graphics toolkit
> by either not plotting the color background or using color terminal but 
> casting all colors to a grayscale equivalent.  But then I thought that was 
> too much for one bug report and pulled back so that the black 
> color-background-translates-to-black issue is still present.

I like the solution of handling the color/gray-scale in Octave (i.e. Gnuplot is 
always told the to use color). Is that what you mean?


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