[Gretl-users] about gnuplot

Dear all 1. I use the command, gnuplot as follows gnuplot x1 x2 y1 y2 --time-series --with-lines without any problems. What should I do if I would like to draw x1 x2 with lines but y1 y2 with points? 2. The command, gnuplot, in console can generate a plot. But it seems not to work when I use the same gnuplot command in a script. It responds that, for example, wrote D:\Subdir\gpttmp01.plt Is this normal? How can I access (open) *.plt files? Thanks Yi-Nung Yang