Send optional configuration commands Send optionally display configuration orders. This routine works in a printf fashion, accepting the same kind of format string and variable number of arguments.
Input is a list of values, assumed regularly spaced on the X-axis.
Input is a list of point coordinates. The 'dpoint' struct type is provided for that purpose. Notice that it is possible to open several gnuplot sessions from the same program. Just be careful then to which session you are talking when using functions. This would leave some temporary files.