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luagnuplottorch

Lua Error: "Gnuplot terminal is not set"

In LuaJIT or in the Torch REPL, I run the commands require 'gnuplot' gnuplot.figure() and I get the error "Gnuplot terminal is not set".

I tried using gnuplot.setterm() with some guesses such as 'x11' and 'qt' as arguments, but get the error "gnuplot does not seem to have this term". Is there somewhere I can get a list of terminal emulators/graphics backends available to gnuplot? Or alternatively, are these errors indicative of some other problem?

Solution

  • It turns out that you get this error if you don't have the Gnuplot executable installed.

    I didn't check for this problem before because gnuplot.lua (v. 5.1) has an error check for the case of that executable being unavailable - on line 145 - but for some reason it failed to catch the problem.