Donna, I'm thinking about matrix multiplication, specifically blankRow =: *./ . = & ' '. For a matrix this returns 1 for blank rows, and it uses a rank 0 piece of data to good effect.
Ian ========= Donna Y wrote Think about matrix multiplication - a scalar can multiply any matrix but to multiply two matrix - they need to be the same shape Donna [email protected] ---------------------------------------------------------------------------------------------------------------------------------------------------------------------- This email is intended for the addressee(s) named and may contain confidential and/or privileged information. If you are not the intended recipient, please notify the sender and then delete it immediately. Any views expressed in this email are those of the individual sender except where the sender expressly and with authority states them to be the views of the Department of Environment, Climate Change & Water NSW. PLEASE CONSIDER THE ENVIRONMENT BEFORE PRINTING THIS EMAIL ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
