broken gnuplot pipe with coloured scatter3 from octave
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broken gnuplot pipe with coloured scatter3 from octave
by lynx.abraxas
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Hello!
Because the thread below says it's a gnuplot issue I post this here as well: In octave I'm having troubles with coloured sactter3. If I do: x=rand(100,1) y=rand(100,1) z=rand(100,1) scatter3 (x, y, z); scatter3 (x, y, z, [], 'b'); scatter3 (x, y, z, z); scatter3 (x, y, z, 50); all is fine (just the spotsize is not changed) but with: scatter3 (x, y, z, 50, [], 's'); scatter3 (x, y, z, 50, []); I get this multiple times: gnuplot> 0.148456192084311 0.601135888459943 0.284623384973014 ^ line 400: invalid command gnuplot> e ^ line 400: invalid command with: gnuplot_binary ("tee octave.gp | gnuplot "); I get: tee: standard output: Broken pipe tee: write error and some time later the gnuplot errors again. Same problem with: cat octave.gp | gnuplot Inside gnuplot: load "octave.gp" "#000000"lc rgb "#000000"lc rgb "#000000" ; ^ "octave.gp", line 3088: duplicated arguments in style specification There's a thread about some similar issue: https://www-old.cae.wisc.edu/pipermail/bug-octave/2007-May/002308.html assuming it's a gnuplot problem but since the other scatter3 commands work I'm not sure about that. I also sometimes get a proken pipe error when quitting less showing the 100 random numbers. I've octave 3.0.5, gnuplot 4.3 patchlevel 0, LFS octave.gp.bz2 is attached. I wonder why there are so many splot commands in it. It seems to me it's supposed to plot the data mutiple times. Many thanks for any help or hints. Lynx ------------------------------------------------------------------------------ Register Now for Creativity and Technology (CaT), June 3rd, NYC. CaT is a gathering of tech-side developers & brand creativity professionals. Meet the minds behind Google Creative Lab, Visual Complexity, Processing, & iPhoneDevCamp as they present alongside digital heavyweights like Barbarian Group, R/GA, & Big Spaceship. http://p.sf.net/sfu/creativitycat-com _______________________________________________ Gnuplot-info mailing list Gnuplot-info@... https://lists.sourceforge.net/lists/listinfo/gnuplot-info |
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Re: broken gnuplot pipe with coloured scatter3 from octave
by Hans-Bernhard Bröker-2
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lynx.abraxas@... wrote:
> I don't get the errors due to an empty color spec though. > Strangely on a different computer I sometimes still get the gnuplot errors. Did you check that you're using the same versions of everything (OS, octave, gnuplot) on those two different computers? > It would be nice if the gnuplot error were more meaningfull to help find the > cause for it. There really can't be. For starters, we're talking about three separate issues with different likely reasons. So there's no "the" cause for gnuplot to inform you about. The first error being described most probably is caused by an I/O buffer limitation being hit somewhere between octave and the main gnuplot executable (pipe buffer, Windows message queue). In effect, some of the data are getting garbled or lost on the way, and gnuplot tries to interpret remaining inline data (input lines containing of just numbers) as commands, which it rather obviously can't. Given those circumstances, there really can't be a meaningful error message. There's no context left to reconstruct possible meaning from. The broken pipe issue with binary data is probably either the same problem in a different disguise, or a generic incapability of the communication channel to handle binary data. Hard to tell without at least knowing the OS platform and gnuplot version. The third issue could be anything --- we gnuplot people don't generally know what those octave commands actually end up sending to gnuplot. Without that, there's nothing we can do to help. > I couldn't get the hg sources compile because my autoconf is 2.59 So what's keeping you from upgrading it? 2.61 has been around for well over two years now! ------------------------------------------------------------------------------ Register Now for Creativity and Technology (CaT), June 3rd, NYC. CaT is a gathering of tech-side developers & brand creativity professionals. Meet the minds behind Google Creative Lab, Visual Complexity, Processing, & iPhoneDevCamp as they present alongside digital heavyweights like Barbarian Group, R/GA, & Big Spaceship. http://p.sf.net/sfu/creativitycat-com _______________________________________________ Gnuplot-info mailing list Gnuplot-info@... https://lists.sourceforge.net/lists/listinfo/gnuplot-info |
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Re: broken gnuplot pipe with coloured scatter3 from octave
by lynx.abraxas
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On 30/05/09 22:43:35, Hans-Bernhard Bröker wrote:
> lynx.abraxas@... wrote: > >> I don't get the errors due to an empty color spec though. >> Strangely on a different computer I sometimes still get the gnuplot errors. > > Did you check that you're using the same versions of everything (OS, > octave, gnuplot) on those two different computers? It's not LFS (Linux from scratch) there but Suse 10.3 octave 3.0.5 and gnuplot 4.2. >> It would be nice if the gnuplot error were more meaningfull to help find the >> cause for it. > > There really can't be. For starters, we're talking about three separate > issues with different likely reasons. So there's no "the" cause for > gnuplot to inform you about. Well within gnuplot: gnuplot> load "octave.gp" "octave.gp", line 3088: duplicated arguments in style specification wc -l octave.gp 1275 octave.gp I can find style only two times and that seems not corrupted to me. Even commenting them out does not help. > The first error being described most probably is caused by an I/O buffer > limitation being hit somewhere between octave and the main gnuplot > executable (pipe buffer, Windows message queue). In effect, some of the > data are getting garbled or lost on the way, and gnuplot tries to interpret > remaining inline data (input lines containing of just numbers) as commands, > which it rather obviously can't. Given those circumstances, there really > can't be a meaningful error message. There's no context left to reconstruct > possible meaning from. I agree if there's garbage comming in the error messages will be problematic. But so far it's only gnuplot/octave that has problems with my 2.6.22.7 kernel- pipe. Is there any way to monitor what happens there? I've piped loads of stuff so far even mplayer pcm data of more than 100MB to oggenc and there was never a problem. The kernel nicely made mplayer sleep while the pipe was full and oggenc was bussy encoding. > The broken pipe issue with binary data is probably either the same problem > in a different disguise, or a generic incapability of the communication > channel to handle binary data. Hard to tell without at least knowing the > OS platform and gnuplot version. > > The third issue could be anything --- we gnuplot people don't generally > know what those octave commands actually end up sending to gnuplot. Without > that, there's nothing we can do to help. That's why I attached octave.gp.bz2 ;-) > >> I couldn't get the hg sources compile because my autoconf is 2.59 > > So what's keeping you from upgrading it? 2.61 has been around for well > over two years now! Yes I know. It's another story. LFS is not so easy to upgrade... As far as I understand the problems here: It is up to octave to make sure it puts proper code into the pipe and tell the user if it can't because of wrong sized arrays or such. The kernel is supposed to pass correctly what comes into the pipe to gnuplot. If gnuplot does not get proper code, it should complain as best as it can. Thanks for looking into this. Regards, Lynx ------------------------------------------------------------------------------ Register Now for Creativity and Technology (CaT), June 3rd, NYC. CaT is a gathering of tech-side developers & brand creativity professionals. Meet the minds behind Google Creative Lab, Visual Complexity, Processing, & iPhoneDevCamp as they present alongside digital heavyweights like Barbarian Group, R/GA, & Big Spaceship. http://p.sf.net/sfu/creativitycat-com _______________________________________________ Gnuplot-info mailing list Gnuplot-info@... https://lists.sourceforge.net/lists/listinfo/gnuplot-info |
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