FAQ

Why does the gnuplot window closes directly after displaying?

On Unix systems it should work with: Gnuplot gp("gnuplot -persist"); Although, currently that is the default anyway, so it should work right out of the box.

On Windows there are issues. See the portability page for hints.

How do I save the gnuplot script?

You can save the plot file with: Gnuplot gp(fopen("script.gp", "w")); Or, Gnuplot gp(">script.gp");

On Unix systems (or, possibly, with Cygwin) you can simultaneously plot and save using Gnuplot gp("tee script.gp | gnuplot -persist")

Note that if Gnuplot in constructed with no arguments then you can set the GNUPLOT_IOSTREAM_CMD environment variable. For example, on Linux do GNUPLOT_IOSTREAM_CMD=">script.gp" ./my_program

Do not use temporary files if you want to save a script, since they will vanish. If you use the file1d() or binaryFile1d() commands which normally make temporary files, you can pass them a filename to make a permanent file. See here for more details.

My question is not in the FAQ.

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