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pdfcairo/pngcairo file size limitations?

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Subject	pdfcairo/pngcairo file size limitations?
From	schwarz.cd48@gmail.com
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gnuplot version 5.0 patchlevel 0


Hello gplusers,

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 this

    #!/usr/bin/gnuplot
    set terminal pdfcairo font ",60" size 16,18
    set output "output.pdf"

    set cbrange [0:140]
    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?

Cheers,
Paul

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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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