Dynamic section

Of course, maps can have spatially variable values!

binding
 MapA=a.map;    # input map, digital elevation model·
 MapC=c.map;    # output map

areamap
 mask.map;

timer
 1 10 1;

initial
 MapB=5*MapA;·
 report MapC=MapB/10;


dynamic
 MapB=MapB+MapC;
 MapD=MapB+1;