Gradient Vector from Cartesian to Polar Coordinates
grid_calculus
ParameterRaster|DX|X Component|False
ParameterRaster|DY|Y Component|False
ParameterSelection|UNITS|Polar Angle Units|[0] radians;[1] degree
ParameterSelection|SYSTEM|Polar Coordinate System|[0] mathematical;[1] geographical;[2] user defined
ParameterNumber|SYSTEM_ZERO|User defined Zero Direction|None|None|0.0
ParameterSelection|SYSTEM_ORIENT|User defined Orientation|[0] clockwise;[1] counterclockwise
OutputRaster|DIR|Direction
OutputRaster|LEN|Length