improved objective function generation

util/objectiveFunctionWrapper.m

@@ -1,13 +1,15 @@
-function f = objectiveFunctionWrapper(center)
+function f = objectiveFunctionWrapper(center, sigma)
     % Convenience function to generate MVNPDFs at a point
     % Makes it look a lot neater to instantiate and sum these to make
     % composite objectives in particular
     arguments (Input)
-        center (1, 2) double;
+        center (:, 2) double;
+        sigma (2, 2) double = eye(2);
     end
     arguments (Output)
         f (1, 1) {mustBeA(f, 'function_handle')};
     end
+    
+    f = @(x,y) sum(cell2mat(arrayfun(@(i) mvnpdf([x(:), y(:)], center(i,:), sigma), 1:size(center,1), 'UniformOutput', false)), 2);
 
-    f = @(x, y) mvnpdf([x(:), y(:)], center);
 end