Re: plotting in windows

[Ben Abbott]

On Jan 11, 2013, at 1:03 AM, Andreas Weber wrote:

> Am 11.01.2013 03:47, schrieb Ben Abbott:
>> 
>> On Jan 10, 2013, at 5:33 PM, Andreas Weber wrote:
>> 
>>> Am 10.01.2013 19:11, schrieb Jordi Gutiérrez Hermoso:
>>>> This isn't a Windows problem. The problem is that printing with fltk
>>>> is done with gl2ps, and this doesn't work very well for moderately
>>>> complicated plots.
>>> 
>>> Ah, interesting.
>>> So you can reproduce this problem? Does it work with antialiasing disabled?
>>> 
>>> graphics_toolkit fltk
>>> plot(rand(1e4))
>>> print("test.png","-GraphicsAlphaBits=1")
>>> 
>>> Regards, Andy
>> 
>> The anti-aliasing option is passed as an option to ghostscript.
>> 
>> Indeed when I add that option (I'm running MacOS X) the png file is created. 
>>  When I don't use the option the png file is corrupted.
>> 
>> That implies that eps files should be property created, and when I checked 
>> they were.
>> 
>> Is this a bug in ghostscript?
>> 
>> Ben
>> 
> 
> Hi Ben,
> I thought this is a bug in ghostscript. Therefore I wanted goost to file
> a bug report and we can then communicate this to the ghostscript devs.
> 
> What I did yesterday after reading goossts post:
> 
> octave:1> graphics_toolkit fltk
> octave:2> plot(rand(1e4,1))
> octave:3> print("-debug","test1.png")
> CTRL+C
> 
> fltk-pipeline: '/usr/bin/gs -dQUIET -dNOPAUSE -dBATCH -dSAFER
> -sDEVICE=png16m -dTextAlphaBits=4 -dGraphicsAlphaBits=4 -r150x150
> -dEPSCrop -sOutputFile="test1.png" -'
> 
> Then I created the eps (perhaps there is a better method for this on
> windows?)
> 
> octave:3> drawnow("eps","| cat > plot1e4.eps")
> 
> And run ghostscript from cmd and removed the options until I got a
> result. With this method, I found that the plot is generated with
> dGraphicsAlphaBits=1
> 
> Back to your answer: I know that GraphicsAlphaBits is passed to
> ghostscript and I my first thought was, that it's a gswin32c bug only
> with windows.
> 
> Regards, Andy


Ok. You plan sounds good to me.

To create a eps-file you can just ....

        print -depsc test.eps

Ben