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Groups > comp.graphics.apps.gnuplot > #3760

Re: pdfcairo/pngcairo file size limitations?

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Am Donnerstag, 28. September 2017 22:47:47 UTC+2 schrieb Karl Ratzsch:
> Am 28.09.2017 um 15:07 schrieb schwarz.cd48@gmail.com:
> > gnuplot version 5.0 patchlevel 0
> 
> > I am trying to make a matrix plot of a file that is made up of 48 columns and 50000 lines. Each column contains integers between 0 - 140. I also want to produce a pdf in the end. The script for the plot looks like 
> 
> >     plot 'data.file' u 1:2:3 matrix wi image
> > 
> > The problem is that in the output.pdf the plot area/canvas is empty and only the xtics, ytics, and cbtics are shown. If I open gnuplot in the terminal and just do the plot in the standard qt terminal I will see the plot normally as expected, but it won't be produced in the pdf. The same goes for the pngcairo terminal. On the other hand, if I use 
> > 
> >     set terminal postscript eps enhanced
> > 
> > then the output.eps will contain the plot with no problems and I can convert eps to pdf.
> > 
> > But why does the pdfcairo/pngcairo not work?
> > 
> > I also found that if I reduce the number of lines in my 'data.file' from 50000 to 30000 (cutting off 2/5 of my data), then I will get a normal plot in my output.pdf. If I increase it again to 40000, the canvas will again be empty again. Does pdfcairo have some limitations here?
> 
> 
> Yes, there is a problem. The following script produces a dataset
> like yours and works on qt and windows terminal, crashes wxt, and
> leaves an empty canvas with pdfcairo. (Tested on gp5.2pl0)
> 
> 
> t=time(0)
> n=40000
> m=48
> set print $dat;do for [i=1:n] {
>   s=""
>   do for [j=1:m] {s=s.sprintf(" %.2f",rand(0.))}
>   if (i%1000==0) {set print; print i." of ".n;set print $dat append}
>   print s}
> set print
> print time(0)-t
> 
> plot $dat us 1:2:3 matrix w image

I guess I report it as a bug then

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pdfcairo/pngcairo file size limitations? schwarz.cd48@gmail.com - 2017-09-28 06:07 -0700
  Re: pdfcairo/pngcairo file size limitations? Karl Ratzsch <mail.kfr@gmx.net> - 2017-09-28 22:47 +0200
    Re: pdfcairo/pngcairo file size limitations? schwarz.cd48@gmail.com - 2017-09-29 02:18 -0700
    Re: pdfcairo/pngcairo file size limitations? Ethan A Merritt <EAMerritt@gmail.com> - 2017-10-02 09:18 -0700
      Re: pdfcairo/pngcairo file size limitations? Ethan A Merritt <sfeam@users.sourceforge.net> - 2017-10-02 11:44 -0700
        Re: pdfcairo/pngcairo file size limitations? Ethan A Merritt <sfeam@users.sourceforge.net> - 2017-10-02 13:52 -0700

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