• Find normal

This option will calculate the normal vector to the maplet in various ways.

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 1. Normal from radius vector
 2. Normal from heights
 3. Normal from shape
 4. Normal from stereo
 q. Quit

1. Normal from radius vector - The normal is set to be the same as the radius vector. Keep in mind that the normal is the same as the radius vector everywhere if the object is a sphere. Rarely will conditions on an asteroid be such that this option will be correct.

2. Normal from heights - The normal is determined from the average of the heights in the maplet. This option is the one that will be used almost exclusively.

3. Normal from shape - The normal is determined from the shape model.

4. Normal from stereo - ???

Most Common Usage

The vast majority of the time option "2" is used.

I.E.

n

2