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Aspect formula

Question asked by raghu28 on Sep 14, 2011
Latest reply on Sep 14, 2011 by raghu28
Hi all,

Here is a question. The help files on ArcGIS gives the calculation of aspect for a DEM as aspect = 57.29578 * atan2 ([dz/dy], -[dz/dx])

This is perhaps a pretty basic question which I'm not able to get around- what is 57.29578? Is it a correction factor? I'm assuming its an angle b/w 0-360 but I want to know why this particular decimal number is being used.

Any tips on the above would be great.