added functions to calculate standard deviation and zscore

[mothur.git] / trialSwap2.cpp

diff --git a/trialSwap2.cpp b/trialSwap2.cpp
index 2d25e835cbd5608bc1c4f4c6cc67397155f2c834..1524890c9c9ddda83a1d777982e59ac23ebb037b 100644 (file)
--- a/trialSwap2.cpp
+++ b/trialSwap2.cpp
@@ -291,6 +291,30 @@ double TrialSwap2::t_test (double initialscore, int runs, double nullMean, vecto
     }
 }
 /**************************************************************************************************/
+double TrialSwap2::getSD (int runs, vector<double> scorevec, double nullMean)
+{
+    double sum = 0;
+    for(int i=0;i<runs;i++)
+        {
+            if (m->control_pressed) { return 0; }
+            sum += pow((scorevec[i] - nullMean),2);
+        }
+    return sqrt( (1/runs) * sum );
+}
+/**************************************************************************************************/
+double TrialSwap2::get_zscore (double sd, double nullMean, double initscore)
+{
+    map<double, double> ztable;
+    
+    ztable["0.00"] = 0.5;
+    
+    double z;
+    
+    z = (initscore - nullMean) / sd;
+    
+    return z;
+}
+/**************************************************************************************************/
 int TrialSwap2::print_matrix(vector<vector<int> > &matrix, int nrows, int ncols)
 {
     try {