not line but symbol

[Vincent Le Fouest <vincent_lefouest@xxxxxxxxxx>]

Hi everybody,
I would like to do a plot using triangles and not a line but that does not 
work (sym=19):

use file
set region/i=130/j=40/z=2.5/l=1:100
go left_axis_plot/sym=19 var1[d=1]
go right_axis_plot var2[d=1]

Could you help me?

Thanks!