Re: Print Plot Results in all Black plot in file

[Dmitri A. Sergatskov]

On Tue, Aug 4, 2015 at 12:41 AM, Thomas D. Dean <address@hidden> wrote:

I am struggling thru the code for print.

Is there a global value that can be set to control the output of print.

octave:> z=1:.1:pi;
octave:> plot(z,sin(z));
octave:> print("sin.png","-dpngcairo");

works.

Without -dpngcairo opts.devopt gets set to "-dpng" and print produces a black square.

It looks like the opts structure is passed to gnuplot in __gnuplot_print__.m.  As a work-around, I patched this file to force pngcairo.  Not a solution, just makes lots of scripts work, again.

I don't see any global mechanism to set a default print device.

True?

​A quick and dirty hack is to add a line

​ if (strfind (opts.devopt, "png")) opts.devopt = "pngcairo" ; endif

near the top of function print in "print.m"

(while you at it you can also similarly override pdf with pdfcairo

  (and postscript with epscairo, but that require some extra modifications))

​
 

Tom Dean

​Dmitri.
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