How to use different version of gnuplot

Question

I am running octave 4.2.2 on centOs 6 , and I've encountered some issue plotting graphs:

error: graphics_toolkit: gnuplot version too old.

some questions on this site suggeted installing gnuplot version 4.4 instead of 4.2 (the centOs 6 default). I installed it and now I have 2 gnuplot apps under /usr/bin/ , gnuplot & gnuplot44. my question is, how to make octave to use gnuplot44 and not gnuplot ? I've tried the next steps:

octave:2> register_graphics_toolkit('gnuplot44')
octave:3> available_graphics_toolkits
ans = 
{
  [1,1] = gnuplot
  [1,2] = gnuplot44
}
octave:4> graphics_toolkit('gnuplot44')
error: feval: function '__init_gnuplot44__' not found
error: called from
    graphics_toolkit at line 91 column 5

I have also tried with full path and got the same result:

 octave:4> register_graphics_toolkit('/usr/bin/gnuplot44')
octave:5> available_graphics_toolkits
ans = 
{
  [1,1] = /usr/bin/gnuplot44
  [1,2] = gnuplot
  [1,3] = gnuplot44
}
octave:6> graphics_toolkit('/usr/bin/gnuplot44')
error: feval: function '__init_/usr/bin/gnuplot44__' not found
error: called from
    graphics_toolkit at line 91 column 5

How can I overcome this issue ?

rahnema1 · Accepted Answer · 2019-01-08 05:51:53Z

1

You can use gnuplot_binary :

gnuplot_binary('gnuplot44');

answered Jan 8, 2019 at 5:51

rahnema1

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