CODEWITHSUNDEEP
gnuplot
robm
robm

Reputation: 1403

conditional on terminal type (or 'set' variable in general) / read a 'set' variable?

I have a series of gnuplot scripts which I have developed using the default 'qt' terminal on my OS X system. This has the convenient feature of closing the closing the qt window when the script completes, so I added:

pause mouse "mouse button 2 or 3 to close\n";

Later in development I want to output to pdf, but now the pause hangs my command line terminal until I hit return. I wanted to do:

set terminal pdf
...
if (terminal eq qt) pause mouse "mouse button 2 or 3 to close\n";

but this gives me:

line 45: undefined variable: terminal

I now have a workaround of setting a different variable and setting the terminal from it:

term = 'qt'
if (term eq 'pdf') set terminal pdf ; set output 'rToR.pdf'
...
if (term eq 'qt') pause mouse "mouse button 2 or 3 to close\n";

which may be arguably better for some code design aspects, but requires a layer of redundancy and isn't actually what I want to do.

Therefore, is there way to / how do I access the value of a gnuplot setting like 'terminal'?

Upvotes: 2

Views: 522

Answers (1)

Christoph
Christoph

Reputation: 48420

See show variables all for a list of available variables. In your case you need GPVAL_TERM:

if (GPVAL_TERM eq 'qt') { ... }

if (GPVAL_TERM eq 'pdfcairo') { ... }

With set terminal pdf usually, the pdfcairo terminal is selected, so you need the string 'pdfcairo' for the comparison.

Upvotes: 1

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