| # GRASS Help System

residual - In map registration, a residual is the amount of error that a registered control point contributes to the overall map registration error. "Error" is defined as the difference between the value assigned by the user to a control point and its expected value based on a user-specified map coordinate system and the values of the other registration control points.

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Automatically created on: Sat Jan 8 06:50:28 2005