thanks Bjoern, an up and at it reply! Good for you. trouble is, i tried your program and got a
|value error: f5 there must be spaces I got wrong, but which one or which ones? again , a pain, and i need to retype all to try to find the error. Is there a typical space the neophyte misses? then after that i need to try to adapt this to some real math and keep careful notes in a plac where i can find them thanks for your extreme patience ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
