A is an array of real and complex numbers. Is there an easier way to locate all the complex numbers. Signum locates each numbers intersection with a line from it to the origin and the circle.
]A=:(i:2)j./i:2 _2j_2 _2j_1 _2 _2j1 _2j2 _1j_2 _1j_1 _1 _1j1 _1j2 0j_2 0j_1 0 0j1 0j2 1j_2 1j_1 1 1j1 1j2 2j_2 2j_1 2 2j1 2j2 *A _0.707107j_0.707107 _0.894427j_0.447214 _1 _0.894427j0.447214 _0.707107j0.707107 _0.447214j_0.894427 _0.707107j_0.707107 _1 _0.707107j0.707107 _0.447214j0.894427 0j_1 0j_1 0 0j1 0j1 0.447214j_0.894427 0.707107j_0.707107 1 0.707107j0.707107 0.447214j0.894427 0.707107j_0.707107 0.894427j_0.447214 1 0.894427j0.447214 0.707107j0.707107 -.(*A)e. _1 0 1 1 1 0 1 1 1 1 0 1 1 1 1 0 1 1 1 1 0 1 1 1 1 0 1 1 I am looking for the best way to locate all the complex numbers. Linda ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
