First, figure out where the povray
runtime binaries are installed. Note the name of the directory where you find it. For the sake of argument, if it was found in the directory /usr/local/povray
, then at the shell prompt where you start gnuplot
Then, run gnuplot.
Gnuplot is trying to launch povray
, but doesn't know how to find it. Like the shell, it may
use $PATH to find programs. Adding a directory to the list in $PATH will tell it to look there, and it will then find it.