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map_set keyword can affect contour?? [message #44208]

Mon, 30 May 2005 10:45

duststorm
Messages: 2
Registered: May 2005

Junior Member

Hello, everyone,

I have some TOMS AOT data which is 1 degree*1 degree of resolution.
Because 0 value is filling value, I tried to exclude all 0 values by
using min_value=1 keyword when I contoured data on a map.

If I use "map_set, CLon, CLat, limit=[Lat0,Lon0,Lat1,Lon1]" to set map,
then everything is OK. The area of 0 values is left blank.

However, if I use map_set, CLon, CLat, Scale=42e6 to set map, then the
0 area is filled with the color which suppose to be assoicated with
value 1.

That is very strange. Did anyone encounter similar problem before? and
does anyone know how to fix it?

Thank you very much,

Hang Gao

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