--- a
+++ b/Semantic Features/GetAveragedMatrix.m
@@ -0,0 +1,24 @@
+function [ AveragedMatrix, instanceOrder ] = GetAveragedMatrix( InputMatrix, ratingRow, instanceID )
+%GetAveragedRows Converts matrix from raw format to averaged format
+%   Takes an X or Y matrix and ratingRow(which describes how many rows per
+%   nodule) and averages each set of rows into a single row. 
+
+j = 1;
+i = 1;
+del = 3;
+while i <= size(InputMatrix,1)
+    instanceOrder(j,:) = zeros(1,4); %Make a new empty row
+    if i == ratingRow(3)
+        del = del-1;
+    end
+    if i == ratingRow(2)
+        del = del-1;
+    end
+    if i == ratingRow(1)
+        del = del-1;
+    end
+    instanceOrder(j,1:1+del) = instanceID(i:i+del)';
+    AveragedMatrix(j,:) = mean(InputMatrix(i:i+del,:),1);
+    i = i + del + 1;
+    j = j+1;
+end
\ No newline at end of file