Le 30/10/2013 00:00, Benoît Minisini a écrit :
Le 29/10/2013 23:12, Tobias Boege a écrit :On Fri, 25 Oct 2013, Beno?t Minisini wrote:Le 24/10/2013 15:08, Tobias Boege a ?crit :My workaround always was like this:' Create the read pipe special file hGPstdout = Pipe "/tmp/gnuplotFIFO2" For Write Close #hGPstdout ' Create write end hGPpipe = Pipe "/tmp/gnuplotFIFO1" For Write ' Start writer hGPproc = Shell "gnuplot </tmp/gnuplotFIFO1 >/tmp/gnuplotFIFO2" ' Really create read end hGPstdout = Pipe "/tmp/gnuplotFIFO2" For Read Watch Note that since the shell which starts hGPproc already opened /tmp/gnuplotFIFO2, you won't have any deadlock problems when opening hGPstdout For Read afterwards. Anyway, if I Print #hGPpipe, "plot x^2" only garbage (not non-sense but the string is always scrambled) seems to arrive at gnuplot. Also, I seem to get output from gnuplot irregularly. So I'm out of options for now. I remember that raising Read events for streams has been subject to issues from time to time... Regards, TobiPlease give details. I tried what you said (but "plot x*x" because" "plot x^2" seems to not be the good syntax), and I always got the plot as expected.OK. The attached project gives the following output after I pressed "Button1" four or five times: --- Read line 0: non-integer passed to boolean operator Read gnuplot> lot x^1 ^ line 0: invalid command Read gnuplot> pot x^1 ^ line 0: Read invalid command Read gnuplot> lotx^1 ^ line 0: invalid command Read gnuplot> plp plot x^1 ^ Read line 0: invalid command --- You can see that in each message, one character is missing so that "plot" is "lot" or "pot" or "lot" again. The missing characters "plp" appear in the last message, totally mis-placed. Am I maybe reading incorrectly from the pipe? Regards, TobiSpoke too fast. Now I have the same output as you (more or less)...
Try that. You must kill gnuplot explicitely. Otherwise by running the program several times, you get a lot of gnuplot processes all writing to the same pipes. So everything is mixed.
Otherwise, why using file pipes that way? Why not communicate directly with the input/output of the gnuplot process?
-- Benoît Minisini
pipedoc-0.0.2.tar.gz
Description: application/gzip
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