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| From | Ingo Thies <ingo.thies@gmx.de> |
| Newsgroups | comp.graphics.apps.gnuplot |
| Subject | Re: Extract RGB values from image |
| Date | Wed, 11 Sep 2013 21:36:42 +0200 |
| Lines | 40 |
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Am 11.09.13 20:08, schrieb sfeam: > Ingo Thies wrote: > >> On 09.09.2013 19:18, sfeam wrote: >> >>> Please report the version of gnuplot being used. >> >> Version 4.4.3 and 4.6.0 >> >> 4.4.3 just returns the "i"s, 4.6.0 returns a warning > > OK. I see the same as you do with 4.6.0. > However starting with version 4.6.1 I see the desired output I tried the same with gnuplot 4.6.3 on my Mac and got the following error message: Tabular output of this 3D plot style not implemented I guess that some library is missing or any other problem that can only be solved with developer's knowledge. Obviously, RGB extraction with gnuplot is far from being trivial and stable, but seems to depend on third-party libraries which are present in some system and missing in others. So I tend to give up since I have found another (however less convenient) way by using GIMP. It can write images in .pnm or similar files which also contain the RGB triples. However, if you have a simple solution to this problem, please let me know. Again, is something wrong with the following plotting command? splot 'someimage.png' binary filetype=png with rgbimage > [10] gnuplot_4.6.0 rgbdump.bug | head -8 In which environment are you performing this command? Where can I find the file rgbdump.bug? Ingo
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Extract RGB values from image Ingo Thies <ingo.thies@gmx.de> - 2013-09-09 15:18 +0200
Re: Extract RGB values from image sfeam <sfeam@users.sourceforge.net> - 2013-09-09 10:18 -0700
Re: Extract RGB values from image Ingo Thies <ingo.thies@gmx.de> - 2013-09-11 11:39 +0200
Re: Extract RGB values from image sfeam <sfeam@users.sourceforge.net> - 2013-09-11 11:08 -0700
Re: Extract RGB values from image Ingo Thies <ingo.thies@gmx.de> - 2013-09-11 21:36 +0200
Re: Extract RGB values from image Ingo Thies <ingo.thies@gmx.de> - 2013-09-16 09:02 +0200
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