Area basin from a specific point

Hi, Ncl users!

I have a direction mask of the whole amazon basin and I need just an
specific basin of araguaia river, I have the final point and a I need to
find the drainage area for this specific point.

Mask parameter description:
(1) River Network: directory "Network and sinuosity", file
network.17.txt (17 means the 17th revision).
Text file of river directions, with 420 columns and 324 rows;
northwesternmost corner at (6 oN, 80 oW),
resolution 5-minute arc (12 cells per degree). Number format is
integer. Unit: adimensional. Conventions
are:
0: outside the basin;
1: river flow northward
2: river flow northeastward
3: river flow eastward
4: river flow southeastward
5: river flow southward
6: river flow southwestward
7: river flow westward
8: river flow northwestward
9: river mouth (these points are actually outside the basin)

Is there any function to do what I want?

Thanks...

-- 
Luciana Mara Freitas Diniz

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Received on Wed Apr 18 2007 - 12:47:30 MDT