Am I getting closer to the answer using 360&| ?
(>:/;(>:/&(360&|))&dfd)~45*i. 9 +-----------------+-----------------+ |1 0 0 0 0 0 0 0 0|1 0 0 0 0 0 0 0 1| |1 1 0 0 0 0 0 0 0|1 1 0 0 0 0 0 0 1| |1 1 1 0 0 0 0 0 0|1 1 1 0 0 0 0 0 1| |1 1 1 1 0 0 0 0 0|1 1 1 1 0 0 0 0 1| |1 1 1 1 1 0 0 0 0|1 1 1 1 1 0 0 0 1| |1 1 1 1 1 1 0 0 0|1 1 1 1 1 1 0 0 1| |1 1 1 1 1 1 1 0 0|1 1 1 1 1 1 1 0 1| |1 1 1 1 1 1 1 1 0|1 1 1 1 1 1 1 1 1| |1 1 1 1 1 1 1 1 1|1 0 0 0 0 0 0 0 1| +-----------------+-----------------+ ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
