Thank you for the response. I'm using GNU Octave, version 2.1.73.
I had a look at "help colormap" but this as far as I understand only
manages the colour of the different plots. The part I would really
would like to edit is the description given to each mesh/surface
drawn on the axis. Something like "help legend" provides the following:
" Legend puts a legend on the current plot using the specified strings
as labels. Use independant strings (@var{st1}, @var{st2}, @var{st3}...), a
matrix of strings (@var{matstr}), or a cell array of strings (@var{cell})
to specify legends. Legend works on line graphs, bar graphs, etc..."
I could not apply this command successfully to a multiple mesh plot.