18.13.1 CODE

[CLEAN\]MAP_COMBINE OutCube CODE In1 In2 [Off] [/FACTOR A1 A2] [/THRESHOLD T1 T2] [/BLANKING Bval]

CODE is the operation code. Allowed values are

 ADD      or PLUS    OutCube = A1*In1 + A2*In2 + Off
 SUBTRACT or MINUS   OutCube = A1*In1 - A2*In2 + Off
 DIVIDE   or OVER    OutCube = A1*In1 / A2*In2 + Off
 MULTIPLY or TIMES   OutCube = A1*In1 * A2*In2 + Off
 OPACITY             OutCube = -Log( A1*In1 / A2*In2 + Off)
 INDEX               OutCube = Log( A1*In1 / A2*In2) / Log(Nu1/Nu2)

where Nu1 is the Frequency of In1, and Nu2 that of In2. Off is 0 if not specified.

With the "intuitive" mathematical syntax, MAP_COMBINE OutCube = [A1*]In1 Oper [A2*]In2 [Off]

Oper can be any of the above values for CODE, or one of the 4 standard operators, +-/*, and scale factors are given in a natural way, defaulting to 1 if not present.