I wrote: > calcCost=: [: +/ *: * 1 < | The problem here is that it's not the square that the C program uses but the square of 1-px
So calcCost should be something like calcCost=: [: +/ [: *: (1-]) * 1 < | -- Raul ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
