Using Attribute Value Examples

The expressions in RasterExpressionEvaluator may contain attribute values; in order to use them we have to use the following syntax:

A:attribute_name

Below is an expression with an attribute value:

(A[0]*A:i/10.0 + B[0]*((11-B:i)/10.0));
(A[1]*A:i/10.0 + B[1]*((11-B:i)/10.0));
(A[2]*A:i/10.0 + B[2]*((11-B:i)/10.0));
if(A[3]==0 || B[3]==0,0,255)

The workspace that uses this expression has a loop, which, after ten iterations gives us the following images: 

 

Or, assembled into an animated sequence:

• See attached DonDaleMorph.fmwt