unfilled polygon

[claudio cortes]

Dear users.

I try to draw an unfilled polygon with "draw polyf..." but there are
no option for specify an unfilled polygon... ¿exist some trick to can
do it?

Best regards

--
Claudio Cortes
www.claudiomet.cl.nu

Meteorologo
Laboratorio de Meteorologia y Calidad de Aire
Centro Nacional del Medio Ambiente (CENMA)
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Claudio Cortes
www.claudiomet.cl.nu

Meteorologist
Meteorology and Air Quality Labs
National Enviroment Center, Chile (CENMA)