I have this piece of code I wrote that apparently I don't understand completely:
mandel=: 4 : '(( +*:`] @. (2:<|)"0)^:x~) y' So, for m1k=: (512%~512-~i.1024)j.~/419%~_825+i.1024 if we do this mm=. 3 mandel m1k We can see the beginning of a Mandelbrot: viewmat mm However, all my attempts to move the "power" (with the tilde: "^:x~") out of the definition have failed: mandel0=: 3 : '(( +*:`] @. (2:<|)"0)^:1~) y' mm=. mandel0^:3 ] m1k viewmat mm NB. Not the same as the above mandel0=: 3 : 'y (+*:`] @. (2:<|)"0) y' mm=. mandel0^:3 ] m1k viewmat mm NB. Not the same as the above mandel0=: 3 : '((+*:)`] @. (2:<|)"0) y' mm=. mandel0^:3 ] m1k NB. Even worse: crashes J Process shell<1> exited abnormally with code 5 Any hints as to what I'm missing? -- Devon McCormick, CFA ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
