1 files changed, 30 insertions, 0 deletions

diff --git a/SD-VBS/common/matlab/product.m b/SD-VBS/common/matlab/product.m
new file mode 100755
index 0000000..65548b4
--- /dev/null
+++ b/SD-VBS/common/matlab/product.m
@@ -0,0 +1,30 @@
+function [matrixOut] = product(matrixIn, direction)
+
+% Initialize matrices
+inputDim = size(matrixIn);
+
+% For input matrix (m,n), we need to multiply horizontally if output matrix
+%is (m). Else, we multiply vertically.
+
+%if direction is 1, we multiply vertically.
+if direction == 1
+    matrixOut = zeros(1, inputDim(2));     %initialize the output matrix
+    for cols = 1:inputDim(2)
+        val = 1;
+        for rows = 1:inputDim(1)
+            val = matrixIn(rows, cols) * val;
+        end
+        matrixOut(cols) = val;
+    end
+
+%  else multiply horizontally
+else
+    matrixOut = zeros(inputDim(1), 1);     %initialize the output matrix
+    for rows = 1:inputDim(1)
+        val = 1;
+        for cols = 1:inputDim(2)
+            val = matrixIn(rows, cols) * val;
+        end
+        matrixOut(rows) = val;
+    end
+end
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