grf1 <- gnuplot x --output="display --time-series --with-lines

Oh, sorry! I've forgot the ending quotes. :-[

grf1 <- gnuplot x --output="display" --time-series --with-lines


That will work now!
**********************************
Artur BALA
Development Economist, Consultant

email:	artur.bala.tn@gmail.com
phone:	+216 24 71 00 80
skype:	artur.bala.tn
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