[Gnuplot-bugs] Bug report: Problem displaying large number of data points

[Rumen I. <Rum...@un...>]

Dear developer,

I have been using gnuplot 3.7 successfully for many years and was always 
satisfied with the results obtained. However, when we upgraded to Gnuplot 
4, on all platforms (Tru64 on Compaq Alpha, RHEL in ia64, SL on x86_64) 
the following problem occurs: when I plot data from a text file like
pl"test.dat"u 1
the data is only plotted for a number of points of up to 1048569 (close to 
2**29). This means, when I restrict the number of points using
pl[1:1048569]"test.dat"u 1
the plot appears as expected. However, when I  use
pl[1:1048570]"test.dat"u 1
the plot window closes and the following error message appears in the 
gnuplot terminal:

XIO:  fatal IO error 104 (Connection reset by peer) on X server 
"xx.xx.xx.xx:0.0"
after 4424 requests (4365 known processed) with 1 events remaining.

This message does not appear on the other platforms mentioned, the plot 
window just shows the axes with an empty plot.

For data files with less then 1048570 data points (lines) there are no 
problems. But I often have to plot files with more than this number of 
lines. Gnuplot 3.7 plots even many millions of data points without 
complaints. But Gnuplot 4 has certain new features I would like to use, so 
I don't want to downgrade to it.

The error message appears with
         G N U P L O T
         Version 4.0 patchlevel 0
         last modified Thu Apr 15 14:44:22 CEST 2004
included in Scientific Linux 5.1

Thank you very much for any efforts which could solve this problem

Best regards

Rumen Iliew

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#  Rumen Iliew                                   #
#  Institut fuer Festkoerpertheorie und -optik   #
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