added conways, handouts

conways/feedback/growth.m

@@ -0,0 +1,12 @@
+% growth function: given some matrix, determines whether a cell's neighbor
+%   should die or live.
+% for any given entry u in matrix U:
+%	u == 3 --> u_iter = 1
+%	u > 3 OR u < 2 --> u_iter = -1
+%	else u = 0
+function U_iter = growth(U)
+	K = [1 1 1; 1 0 1; 1 1 1];
+
+	U_iter = conv2(U, K, 'same');
+	U_iter = (U_iter == 3) - (U_iter > 3 | U_iter < 2);
+end