oxy wrote: >> plot(x1, y1, '*;legend1', x1, fit_y1, '-') > > This does not work for me. Look > > octave-3.0.0:13> plot(g1(:,1),g1(:,2), '*;legend 1') plot(g1(:,1),g1(:,2), '*;legend 1;') Note missing ; character in the original command D,