changed to Poisson IID data

Former-commit-id: e5d8ec1

Author: compops

matlab-seminar/complete/dpoisson.m

@@ -0,0 +1,23 @@
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+%
+% Computes the log-PDF of Poisson distribution
+%
+% Inputs:
+% x:   Obserations
+% par: Parameters of the PDF (location, scale and shape)
+%
+% Outputs:
+% out: Logarithm of the PDF evaluated at each x.
+%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+function[out] = poisson(x, par)
+    part1 = -log( factorial( x ) );
+    part2 = x * log( par );
+    part3 = -par;
+    out = part1 + part2 + part3;
+end
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+% End of file
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%