stream lines in grads

[Satyaban BishoyiRatna]

Dear Grads User,
     I want to plot the stream lines at 850 hPa. I have given the following command bu the lines are coming very closely by which i am getting difficult to analyse.

set gxout stream
d u;v


How can I get these lines with some interval. so it will help me for analysis.I have tried with "set cint 5" but it doesn't work.

thanking you.

regards
satyaban
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