hello

I have a contour elevation (line) map.

I create bounding box map ( as a rectangular  polygon ) of this
contour map using extend.

how can I do that ?

regards

-- 
Ahmet Temiz
Jeoloji Müh.
Afet ve Acil Durum Yönetimi Başkanlığı
Planlama ve Zarar Azaltma Dairesi Başkanlığı


________________________

Ahmet Temiz
Geological Eng.
Information Systems - GIS Group
Disaster and Emergency Management
of Presidency
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