So far I have thought about cutting the images into 4 tesselations as suggested by the following code. But I cannot think of any next step, yet.
$data 2 $each data ┌─────┬─────┐ │30 26│30 26│ └─────┴─────┘ $each (15 13,:15 13)<;._3"_ 2 >data ┌─────┬─────┐ │15 13│15 13│ ├─────┼─────┤ │15 13│15 13│ └─────┴─────┘ ┌─────┬─────┐ │15 13│15 13│ ├─────┼─────┤ │15 13│15 13│ └─────┴─────┘ ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
