]> git.donarmstrong.com Git - mothur.git/blobdiff - trialSwap2.cpp
added modify names parameter to set.dir
[mothur.git] / trialSwap2.cpp
index 750c89ff2f6d10493be697d3f8d8932f0507648d..9959443c9ffbb0c411dfcd0fc6dd6920fbe6f5c8 100644 (file)
@@ -4,743 +4,7 @@
 //The sum_of_squares, havel_hakimi and calc_c_score algorithms have been adapted from I. Miklos and J. Podani. 2004. Randomization of presence-absence matrices: comments and new algorithms. Ecology 85:86-92.
 
 
-/**************************************************************************************************/
-int TrialSwap2::intrand(int n){
-    try {
-        double z;
-        
-        z = (double)random() * (double)n / (double)RAND_MAX;
-        if(z>=n)
-            z=n-1;
-        if(z<0)
-            z=0;
-        return((int)floor(z));
-    }
-       catch(exception& e) {
-               m->errorOut(e, "TrialSwap2", "intrand");
-               exit(1);
-       }
-}
-/**************************************************************************************************/
-/* completely random matrix, all column and row totals are variable, matrix size is the same
- *
- *
- */
-/**************************************************************************************************/
-int TrialSwap2::sim1(vector<vector<int> > &co_matrix){ 
-    try {
-        vector<int> randRow;
-        vector<vector<int> > tmpmatrix;
-        int nrows = co_matrix.size();
-        int ncols = co_matrix[0].size();
-        
-        //clear co_matrix
-        //     for(i=0;i<nrows;i++)
-        //     {
-        //         co_matrix.clear();
-        //     }
-        
-        //cout << "building matrix" << endl;
-        for(int i=0;i<nrows;i++){
-            if (m->control_pressed) { break; }
-            
-            for(int j=0;j<ncols;j++){
-                double randNum = rand() / double(RAND_MAX);
-                //cout << randNum << endl;
-                
-                if(randNum > 0.5) {
-                    randRow.push_back(1);
-                }else{
-                    randRow.push_back(0);
-                }
-            }
-            tmpmatrix.push_back(randRow);
-            randRow.clear();
-            //cout << endl;
-        }
-        co_matrix = tmpmatrix;
-        
-        return 0;
-    }
-       catch(exception& e) {
-               m->errorOut(e, "TrialSwap2", "sim1");
-               exit(1);
-       }
-}
-/**************************************************************************************************/
-/*
- *row sums fixed, columns equiprobable 
- */
-void TrialSwap2::sim2(vector<vector<int> > &co_matrix)
-{ 
-    try {
-        
-        for(int i=0;i<co_matrix.size();i++)
-        {
-            if (m->control_pressed) { break; }
-            random_shuffle( co_matrix[i].begin(), co_matrix[i].end() ); 
-        }
-    }
-       catch(exception& e) {
-               m->errorOut(e, "TrialSwap2", "sim2");
-               exit(1);
-       }
-}
-/**************************************************************************************************/
-int TrialSwap2::sim2plus(vector<int> rowtotal, vector<vector<int> > &co_matrix)
-{
-    try {
-        int nrows = co_matrix.size();
-        int ncols = co_matrix[0].size();
-        double cellprob = 1.0/ncols;
-        vector<double> cellprobvec;
-        vector<int> tmprow;
-        vector<vector<int> > tmpmatrix;
-        //double randNum;
-        
-        double start = 0.0;
-        
-        for(int i=0; i<ncols; i++)
-        {
-            if (m->control_pressed) { return 0; }
-            cellprobvec.push_back(start + cellprob);
-            start = cellprobvec[i];
-        }
-        
-        for(int i=0; i<nrows; i++)
-        {
-            tmprow.assign(ncols, 0);
-            
-            while( accumulate( tmprow.begin(), tmprow.end(), 0 ) < rowtotal[i])
-            {
-                if (m->control_pressed) { return 0; }
-                double randNum = rand() / double(RAND_MAX);
-                //cout << randNum << endl;
-                if(randNum <= cellprobvec[0])
-                {
-                    tmprow[0] = 1;
-                    continue;
-                }
-                for(int j=1;j<ncols;j++)
-                {
-                    //cout << range[j] << endl;
-                    if(randNum <= cellprobvec[j] && randNum > cellprobvec[j-1] && tmprow[j] != 1)
-                    {
-                        tmprow[j] = 1;
-                    }
-                }
-            }
-            tmpmatrix.push_back(tmprow);
-            tmprow.clear();
-        }
-        co_matrix = tmpmatrix;
-        tmpmatrix.clear();
-        cellprobvec.clear();
-        
-        return 0;
-    }
-       catch(exception& e) {
-               m->errorOut(e, "TrialSwap2", "sim2plus");
-               exit(1);
-       }
-}
-/**************************************************************************************************/
-/*
- * same as sim2 but using initmatrix which is the initial co-occurrence matrix before transposition
- * may have to be changed depending on what matrix 'seed' is used. One way to use is to transpose
- * every null matrix before using an index and use the random matrix as a seed for the next null.
- */
-/**************************************************************************************************/
-void TrialSwap2::sim3(vector<vector<int> > &initmatrix)
-{
-    try {
-        for(int i=0;i<initmatrix.size();i++)
-        {
-            if (m->control_pressed) { break; }
-            random_shuffle( initmatrix[i].begin(), initmatrix[i].end() ); 
-        }
-        
-    }
-       catch(exception& e) {
-               m->errorOut(e, "TrialSwap2", "sim3");
-               exit(1);
-       }
-}
-/**************************************************************************************************/
-/*
- *
- *
- *
- */
-/**************************************************************************************************/
-int TrialSwap2::sim4(vector<int> columntotal, vector<int> rowtotal, vector<vector<int> > &co_matrix)
-{   
-    try {
-        vector<double> colProb;
-        vector<int> tmprow;//(ncols, 7);
-        vector<vector<int> > tmpmatrix;
-        vector<double> range;
-        vector<double> randNums;
-        int ncols = columntotal.size();
-        int nrows = rowtotal.size();
-        tmprow.clear();
-        
-        double colSum = accumulate( columntotal.begin(), columntotal.end(), 0 );
-        //cout << "col sum: " << colSum << endl;
-        for(int i=0;i<ncols;i++)
-        {
-            if (m->control_pressed) { return 0; }
-            colProb.push_back(columntotal[i]/colSum);
-        }
-        
-        double start = 0.0;
-        
-        for(int i=0;i<ncols;i++)
-        {
-            if (m->control_pressed) { return 0; }
-            range.push_back(start + colProb[i]);
-            start = range[i];
-        }
-        
-        for(int i=0;i<nrows;i++)
-        {
-            tmprow.assign(ncols, 0);
-            if (m->control_pressed) { return 0; }
-            
-            while ( accumulate( tmprow.begin(), tmprow.end(), 0 ) < rowtotal[i])
-            {
-                if (m->control_pressed) { return 0; }
-                
-                double randNum = rand() / double(RAND_MAX);
-                if(randNum <= range[0])
-                {
-                    tmprow[0] = 1;
-                    continue;
-                }
-                for(int j=1;j<ncols;j++)
-                {
-                    if(randNum <= range[j] && randNum > range[j-1] && tmprow[j] != 1)
-                    {
-                        tmprow[j] = 1;
-                    }
-                    
-                }
-            }
-            tmpmatrix.push_back(tmprow);
-            tmprow.clear();
-        }
-        
-        co_matrix = tmpmatrix;
-        
-        return 0;
-    }
-       catch(exception& e) {
-               m->errorOut(e, "TrialSwap2", "sim4");
-               exit(1);
-       }
-}
-/**************************************************************************************************/
-/*
- * inverse of sim4, MUST BE TRANSPOSED BEFORE CO-OCCURRENCE ANALYSIS
- *
- *
- */
-/**************************************************************************************************/
-int TrialSwap2::sim5(vector<int> initcolumntotal,vector<int> initrowtotal, vector<vector<int> > &initmatrix)
-{
-    try {
-        vector<double> colProb;
-        vector<int> tmprow;//(ncols, 7);
-        vector<vector<int> > tmpmatrix;
-        vector<double> range;
-        vector<double> randNums;
-        int ncols = initcolumntotal.size();
-        int nrows = initrowtotal.size();
-        
-        tmprow.clear();
-        
-        double colSum = accumulate( initcolumntotal.begin(), initcolumntotal.end(), 0 );
-        //cout << "col sum: " << colSum << endl;
-        for(int i=0;i<ncols;i++)
-        {
-            if (m->control_pressed) { return 0; }
-            colProb.push_back(initcolumntotal[i]/colSum);
-        }
-        
-        double start = 0.0;
-        
-        for(int i=0;i<ncols;i++)
-        {
-            if (m->control_pressed) { return 0; }
-            range.push_back(start + colProb[i]);
-            start = range[i];
-        }
-        
-        for(int i=0;i<nrows;i++)
-        {
-            tmprow.assign(ncols, 0);
-            if (m->control_pressed) { return 0; }
-            
-            while ( accumulate( tmprow.begin(), tmprow.end(), 0 ) < initrowtotal[i])
-            {
-                if (m->control_pressed) { return 0; }
-                
-                double randNum = rand() / double(RAND_MAX);
-                if(randNum <= range[0])
-                {
-                    tmprow[0] = 1;
-                    continue;
-                }
-                for(int j=1;j<ncols;j++)
-                {
-                    if(randNum <= range[j] && randNum > range[j-1] && tmprow[j] != 1)
-                    {
-                        tmprow[j] = 1;
-                    }
-                    
-                }
-            }
-            tmpmatrix.push_back(tmprow);
-            tmprow.clear();
-        }
-        
-        initmatrix = tmpmatrix;
-        return 0;
-    }
-       catch(exception& e) {
-               m->errorOut(e, "TrialSwap2", "sim5");
-               exit(1);
-       }
-}
-/**************************************************************************************************/
-/*
- *
- *
- *
- */
-/**************************************************************************************************/
-int TrialSwap2::sim6(vector<int> columntotal, vector<vector<int> > &co_matrix)
-{
-    try {
-        vector<vector<int> > tmpmatrix;
-        vector<double> colProb;
-        vector<int> tmprow;
-        vector<double> range;
-        int ncols = columntotal.size();
-        int nrows = co_matrix.size();
-        
-        int colSum = accumulate( columntotal.begin(), columntotal.end(), 0 );
-        
-        for(int i=0;i<ncols;i++)
-        {
-            if (m->control_pressed) { return 0; }
-            colProb.push_back(columntotal[i]/double (colSum));
-        }
-        
-        double start = 0.0;
-        
-        for(int i=0;i<ncols;i++)
-        {
-            if (m->control_pressed) { return 0; }
-            range.push_back(start + colProb[i]);
-            start = range[i];
-        }
-        
-        for(int i=0;i<nrows;i++)
-        {
-            if (m->control_pressed) { return 0; }
-            tmprow.assign(ncols, 0);
-            int tmprowtotal;
-            tmprowtotal = (rand() / double (RAND_MAX)) * 10;
-            while ( tmprowtotal > ncols) {
-                if (m->control_pressed) { return 0; }
-                tmprowtotal = (rand() / double (RAND_MAX)) * 10;
-            }
-            //cout << tmprowtotal << endl;
-            //cout << accumulate( tmprow.begin(), tmprow.end(), 0 ) << endl;
-            
-            while ( accumulate( tmprow.begin(), tmprow.end(), 0 ) < tmprowtotal)
-            {
-                if (m->control_pressed) { return 0; }
-                double randNum = rand() / double(RAND_MAX);
-                //cout << randNum << endl;
-                if(randNum <= range[0])
-                {
-                    tmprow[0] = 1;
-                    continue;
-                }
-                for(int j=1;j<ncols;j++)
-                {
-                    //cout << range[j] << endl;
-                    if(randNum <= range[j] && randNum > range[j-1] && tmprow[j] != 1)
-                    {
-                        tmprow[j] = 1;
-                    }
-                    
-                }
-                
-                
-            }
-            
-            tmpmatrix.push_back(tmprow);
-            tmprow.clear();
-        }
-        
-        co_matrix = tmpmatrix;
-        tmpmatrix.clear();
-        
-        return 0;
-    }
-       catch(exception& e) {
-               m->errorOut(e, "TrialSwap2", "sim6");
-               exit(1);
-       }
-}
-/**************************************************************************************************/
-/*
- * MUST BE TRANSPOSED BEFORE CO-OCCURRENCE ANALYSIS
- *
- *
- */
-/**************************************************************************************************/
-int TrialSwap2::sim7(vector<int> initrowtotal, vector<vector<int> > &co_matrix)
-{
-    try {
-        vector<vector<double> > probmatrix;
-        vector<vector<int> > tmpmatrix;
-        vector<double> colProb;
-        vector<double> probrow;
-        vector<int> tmprow;
-        vector<double> range;
-        double nc;
-        int ncols = co_matrix[0].size(); int nrows = co_matrix.size(); 
-        
-        tmpmatrix.assign(nrows, vector<int>(ncols, 0.));
-        
-        int rowsum = accumulate( initrowtotal.begin(), initrowtotal.end(), 0 );
-        
-        nc = rowsum * ncols;
-        //cout << nc << endl;
-        
-        //assign null matrix based on probabilities
-        
-        double start = 0.0; // don't reset start -- probs should be from 0-1 thoughout the entire matrix 
-        
-        for(int i=0;i<nrows;i++)
-        {
-            if (m->control_pressed) { return 0; }
-            //cout << initrowtotal[i]/double(nc) << endl;
-            double cellprob = initrowtotal[i]/double(nc);
-            //cout << cellprob << endl;
-            for(int j=0;j<ncols;j++)
-            {
-                
-                probrow.push_back(start + cellprob);
-                //cout << probrow[j] << endl;
-                //cout << start << endl;
-                start = start + cellprob;
-            }
-            probmatrix.push_back(probrow);
-            probrow.clear();
-        }
-        
-        
-        //while(tmprowsum < rowsum)
-        //for(int k=0;k<rowsum;k++)
-        int k = 0;
-        while(k < rowsum)
-        {
-            if (m->control_pressed) { return 0; }
-        done:
-            //cout << k << endl;
-            //tmprowsum = accumulate( tmprowtotal.begin(), tmprowtotal.end(), 0 );
-            double randNum = rand() / double(RAND_MAX);
-            //cout << randNum << "+" << endl;
-            //special case for the first entry
-            if(randNum <= probmatrix[0][0] && tmpmatrix[0][0] != 1)
-            {
-                tmpmatrix[0][0] = 1;
-                k++;
-                //cout << k << endl;
-                continue;
-            }
-            
-            
-            for(int i=0;i<nrows;i++)
-            {
-                if (m->control_pressed) { return 0; }
-                for(int j=0;j<ncols;j++)
-                {
-                    //cout << probmatrix[i][j] << endl;
-                    if(randNum <= probmatrix[i][j] && randNum > probmatrix[i][j-1] && tmpmatrix[i][j] != 1)
-                    {
-                        tmpmatrix[i][j] = 1;
-                        k++;
-                        //cout << k << endl;
-                        goto done;
-                    }
-                    //else
-                    //k = k-1;
-                }
-                
-            }
-            
-        }
-        
-        co_matrix = tmpmatrix;
-        return 0;
-    //build probibility matrix
-    /* for(int i=0;i<nrows;i++)
-     {
-     for(int j=0;j<ncols;j++)
-     {
-     probrow.push_back(rowtotal[i]/nc);
-     }
-     probmatrix.pushback(probrow);
-     probrow.clear;
-     }
-     */
-    
-    /* int colSum = accumulate( initcolumntotal.begin(), initcolumntotal.end(), 0 );
-        
-        for(int i=0;i<ncols;i++)
-        {
-            colProb.push_back(initcolumntotal[i]/double (colSum));
-        }
-        
-        double start = 0.0;
-        
-        for(int i=0;i<ncols;i++)
-        {
-            range.push_back(start + colProb[i]);
-            start = range[i];
-        }
-        
-        for(int i=0;i<nrows;i++)
-        {
-            tmprow.assign(ncols, 0);
-            int tmprowtotal;
-            tmprowtotal = (rand() / double (RAND_MAX)) * 10;
-            while ( tmprowtotal > ncols)
-                tmprowtotal = (rand() / double (RAND_MAX)) * 10;
-            //cout << tmprowtotal << endl;
-            //cout << accumulate( tmprow.begin(), tmprow.end(), 0 ) << endl;
-            
-            while ( accumulate( tmprow.begin(), tmprow.end(), 0 ) < tmprowtotal)
-            {
-                double randNum = rand() / double(RAND_MAX);
-                //cout << randNum << endl;
-                if(randNum <= range[0])
-                {
-                    tmprow[0] = 1;
-                    continue;
-                }
-                for(int j=1;j<ncols;j++)
-                {
-                    //cout << range[j] << endl;
-                    if(randNum <= range[j] && randNum > range[j-1] && tmprow[j] != 1)
-                    {
-                        tmprow[j] = 1;
-                    }
-                }
-            }
-            
-            tmpmatrix.push_back(tmprow);
-            tmprow.clear();
-        }
-
-        initmatrix = tmpmatrix;
-     */
-    }
-       catch(exception& e) {
-               m->errorOut(e, "TrialSwap2", "sim7");
-               exit(1);
-       }
-}
-/**************************************************************************************************/
-/*
- *
- *
- *
- */
-/**************************************************************************************************/
-int TrialSwap2::sim8(vector<int> columntotal, vector<int> rowtotal, vector<vector<int> > &co_matrix)
-{   
-    try {
-        double prob; 
-        double start = 0.0;
-        int ncols = columntotal.size(); int nrows = rowtotal.size(); 
-        double probarray[nrows * ncols];
-        double randnum;
-        int grandtotal; 
-        int total = 0;
-        
-        //double colSum = accumulate( columntotal.begin(), columntotal.end(), 0 );
-        double rowSum = accumulate( rowtotal.begin(), rowtotal.end(), 0 );
-        
-        if (m->control_pressed) { return 0; }
-        
-        //cout << "rowsum: " << rowSum << endl;
-        
-        grandtotal = rowSum;
-        
-        //create probability matrix with each site being between 0 and 1
-        for (int i=0;i<nrows;i++) {
-            if (m->control_pressed) { return 0; }
-            for (int j=0;j<ncols;j++) {
-                prob = (rowtotal[i] * columntotal[j])/(rowSum*rowSum);
-                if (prob == 0.0)
-                    probarray[ncols * i + j] = -1;
-                else
-                    probarray[ncols * i + j] = start + prob;
-                //probmatrixrow.pushback(start + prob);
-                start += prob;
-            }
-        }
-        //cout << "prbarray" << endl;
-        //for(int i=0;i<(nrows*ncols);i++)
-        //cout << probarray[i] << " ";
-        //cout << endl;
-        
-        //generate random muber between 0 and 1 and interate through probarray until found
-        while (total < grandtotal)  {
-            if (m->control_pressed) { return 0; }
-            randnum = rand() / double(RAND_MAX);
-            //cout << "rand num: " << randnum << endl;
-            if((randnum <= probarray[0]) && (probarray[0] != 2) ) {
-                probarray[0] = 2;
-                total++;
-                continue;
-            }
-            for(int i=1;i<(nrows*ncols);i++) {
-                if (m->control_pressed) { return 0; }
-                if((randnum <= probarray[i]) && (randnum > probarray[i-1]) && (probarray[i] != 2) ) {
-                    probarray[i] = 2;
-                    total++;
-                    break;
-                }
-                else
-                    continue;
-            }
-        }
-        //cout << "prbarray" << endl;
-        //for(int i=0;i<(nrows*ncols);i++)
-        //cout << probarray[i] << " ";
-        //cout << endl;
-        for(int i=0;i<nrows;i++) {
-            if (m->control_pressed) { return 0; }
-            for(int j=0;j<ncols;j++) {
-                if(probarray[ncols * i + j] == 2)
-                    co_matrix[i][j] = 1;
-                else
-                    co_matrix[i][j] = 0;
-            }
-        }
-        return 0;
-    }
-       catch(exception& e) {
-               m->errorOut(e, "TrialSwap2", "sim8");
-               exit(1);
-       }
-}
-/**************************************************************************************************/
-int TrialSwap2::havel_hakimi(vector<int> rowtotal,vector<int> columntotal,vector<vector<int> > &co_matrix) 
-{
-    try {
-        int nrows = co_matrix.size();
-        int ncols = co_matrix[0].size();
-        int i,j,k;
-        vector<int> r1; r1.resize(nrows,0);
-        vector<int> c;  c.resize(ncols,0);
-        vector<int> c1; c1.resize(ncols,0);
-       
-        
-        for(i=0;i<nrows;i++) {
-            for(j=0;j<ncols;j++) {
-                co_matrix[i][j]=0;
-            }
-        }
-        for(i=0;i<nrows;i++) {
-            r1[i]=1; 
-        }
-           
-        for(i=0;i<ncols;i++)
-        {
-            c[i]=columntotal[i];
-            c1[i]=i;
-        }
-        
-        for(k=0;k<nrows;k++)
-        {
-            if (m->control_pressed) { return 0; }
-            i=intrand(nrows);
-            while(r1[i]==0) {
-                if (m->control_pressed) { return 0; }
-                i=intrand(nrows);
-            }
-            r1[i]=0;
-            sho(c,c1,ncols);
-            for(j=0;j<rowtotal[i];j++)
-            {
-                if (m->control_pressed) { return 0; }
-                co_matrix[i][c1[j]]=1;
-                c[j]--;
-                if(c[j]<0)
-                    m->mothurOut("Uhh! " + toString(c1[j]) + "\n");
-            }
-        }
-        return 0;
-    }
-       catch(exception& e) {
-               m->errorOut(e, "TrialSwap2", "havel_hakimi");
-               exit(1);
-       }
-}
-/**************************************************************************************************/
-int TrialSwap2::sho(vector<int> c, vector<int> c1, int k)
-{
-    try {
-        int i,j,temp;
-        
-        for(j=k-1;j>0;j--)
-        {
-            if (m->control_pressed) { return 0; }
-            for(i=0;i<j;i++)
-            {
-                if(c[i]<c[i+1])
-                {
-                    temp=c[i];
-                    c[i]=c[i+1];
-                    c[i+1]=temp;
-                    temp=c1[i];
-                    c1[i]=c1[i+1];
-                    c1[i+1]=temp;
-                }
-            }
-        }
-        for(j=1;j<1000;j++)
-        {
-            if (m->control_pressed) { return 0; }
-            i=intrand(k-1);
-            if(c[i]==c[i+1])
-            {
-                temp=c[i];
-                c[i]=c[i+1];
-                c[i+1]=temp;
-                temp=c1[i];
-                c1[i]=c1[i+1];
-                c1[i+1]=temp;
-            }
-        }
-        return(0);
-    }
-       catch(exception& e) {
-               m->errorOut(e, "TrialSwap2", "sho");
-               exit(1);
-       }
-}
-/**************************************************************************************************/
-double TrialSwap2::calc_c_score (vector<vector<int> > &co_matrix,vector<int>  rowtotal)
+double TrialSwap2::calc_c_score (vector<vector<int> > &co_matrix, vector<int> rowtotal, int ncols, int nrows)
 {
     try {
         double cscore = 0.0;
@@ -748,8 +12,10 @@ double TrialSwap2::calc_c_score (vector<vector<int> > &co_matrix,vector<int>  ro
         double D;
         double normcscore = 0.0;
         int nonzeros = 0;
-        int ncols = co_matrix[0].size(); int nrows = rowtotal.size(); 
-        vector<vector<double> > s(nrows, vector<double>(nrows,0.0)); //only fill half the matrix
+        //int ncols = co_matrix[0].size(); int nrows = rowtotal.size();
+        vector<vector<double> > s; s.resize(nrows);
+        for (int i = 0; i < nrows; i++) { s[i].resize(nrows,0.0); }//only fill half the matrix
+        
         
         for(int i=0;i<nrows-1;i++)
         {
@@ -779,29 +45,31 @@ double TrialSwap2::calc_c_score (vector<vector<int> > &co_matrix,vector<int>  ro
                 if(maxD != 0)
                 {
                     normcscore += D/maxD;
-                    nonzeros++;    
-                }            
+                    nonzeros++;
+                }
             }
         }
         
-        cscore = cscore/(double)(nrows*(nrows-1)/2);
+        //cscore = cscore/(double)(nrows*(nrows-1)/2);  //not normalized
         //cout << "normalized c score: " << normcscore/nonzeros << endl;
-        
+        cscore = normcscore/(double)nonzeros;
+
         return cscore;
     }
-       catch(exception& e) {
-               m->errorOut(e, "TrialSwap2", "calc_c_score");
-               exit(1);
-       }
+    catch(exception& e) {
+        m->errorOut(e, "TrialSwap2", "calc_c_score");
+        exit(1);
+    }
 }
 /**************************************************************************************************/
-int TrialSwap2::calc_checker (vector<vector<int> > &co_matrix, vector<int>  rowtotal)
+int TrialSwap2::calc_checker (vector<vector<int> > &co_matrix, vector<int> rowtotal, int ncols, int nrows)
 {
     try {
         int cunits=0;
         //int s[nrows][ncols];
-        int ncols = co_matrix[0].size(); int nrows = rowtotal.size(); 
-        vector<vector<int> > s(nrows, vector<int>(nrows,0)); //only fill half the matrix
+        //int ncols = co_matrix[0].size(); int nrows = rowtotal.size();
+        vector<vector<int> > s; s.resize(nrows);
+        for (int i = 0; i < nrows; i++) { s[i].resize(nrows,0); }//only fill half the matrix
         
         for(int i=0;i<nrows-1;i++)
         {
@@ -828,28 +96,28 @@ int TrialSwap2::calc_checker (vector<vector<int> > &co_matrix, vector<int>  rowt
             }
         }
         
-        return cunits;   
+        return cunits;
+    }
+    catch(exception& e) {
+        m->errorOut(e, "TrialSwap2", "calc_checker");
+        exit(1);
     }
-       catch(exception& e) {
-               m->errorOut(e, "TrialSwap2", "calc_checker");
-               exit(1);
-       }
 }
 /**************************************************************************************************/
-double TrialSwap2::calc_vratio (vector<int> rowtotal, vector<int> columntotal)
+double TrialSwap2::calc_vratio (int nrows, int ncols, vector<int> rowtotal, vector<int> columntotal)
 {
     try {
-        int nrows = rowtotal.size();
-        int ncols = columntotal.size();
+        //int nrows = rowtotal.size();
+        //int ncols = columntotal.size();
         int sumCol = accumulate(columntotal.begin(), columntotal.end(), 0 );
-       // int sumRow = accumulate(rowtotal.begin(), rowtotal.end(), 0 );
+        // int sumRow = accumulate(rowtotal.begin(), rowtotal.end(), 0 );
         
         double colAvg = (double) sumCol / (double) ncols;
//       double rowAvg = (double) sumRow / (double) nrows;
       // double rowAvg = (double) sumRow / (double) nrows;
         
         double p = 0.0;
         
//       double totalRowVar = 0.0;
       // double totalRowVar = 0.0;
         double rowVar = 0.0;
         double colVar = 0.0;
         
@@ -858,7 +126,7 @@ double TrialSwap2::calc_vratio (vector<int> rowtotal, vector<int> columntotal)
             if (m->control_pressed) { return 0; }
             p = (double) rowtotal[i]/(double) ncols;
             rowVar += p * (1.0-p);
-        } 
+        }
         
         for(int i=0;i<ncols;i++)
         {
@@ -874,29 +142,44 @@ double TrialSwap2::calc_vratio (vector<int> rowtotal, vector<int> columntotal)
         m->errorOut(e, "TrialSwap2", "calc_vratio");
         exit(1);
     }
-         
+    
 }
 /**************************************************************************************************/
-int TrialSwap2::calc_combo (vector<vector<int> > &initmatrix)
+int TrialSwap2::calc_combo (int nrows, int ncols, vector<vector<int> > &nullmatrix)
 {
     try {
-        int initrows = initmatrix.size();
+        //need to transpose so we can compare rows (row-major order)
+        //int tmpnrows = nrows;
+        vector<vector<int> > tmpmatrix;
+        
+        vector<int> tmprow;
+        if(!tmpmatrix.empty())
+            tmpmatrix.clear();
+        for (int i=0;i<ncols;i++)
+        {
+            for (int j=0;j<nrows;j++)
+            {
+                tmprow.push_back(nullmatrix[j][i]);
+            }
+            
+            tmpmatrix.push_back(tmprow);
+            tmprow.clear();
+        }
+        
         int unique = 0;
         int match = 0;
-        int matches = 0;
-        for(int i=0;i<initrows;i++)
+        for(int j=0;j<ncols;j++)
         {
             match = 0;
-            for(int j=i+1;j<=initrows;j++)
+            for(int i=j+1;i<=ncols;i++)
             {
-                if (m->control_pressed) { return 0; }
-                if( (initmatrix[i] == initmatrix[j])) 
+                //comparing matrix rows
+                if( (tmpmatrix[j] == tmpmatrix[i]))
                 {
                     match++;
-                    matches++;
                     break;
                 }
-            }        
+            }
             
             //on the last iteration of a previously matched row it will add itself because it doesn't match any following rows, so that combination is counted
             if (match == 0)
@@ -908,30 +191,29 @@ int TrialSwap2::calc_combo (vector<vector<int> > &initmatrix)
         m->errorOut(e, "TrialSwap2", "calc_combo");
         exit(1);
     }
-} 
+}
 /**************************************************************************************************/
-int TrialSwap2::swap_checkerboards (vector<vector<int> > &co_matrix)
+int TrialSwap2::swap_checkerboards (vector<vector<int> > &co_matrix, int ncols, int nrows)
 {
     try {
-        int ncols = co_matrix[0].size(); int nrows = co_matrix.size(); 
-        int i, j, k, l;
-        i=intrand(nrows);
-        while((j = intrand(nrows) ) == i ) {;if (m->control_pressed) { return 0; }}
-        k=intrand(ncols);
-        while((l = intrand(ncols) ) == k ) {;if (m->control_pressed) { return 0; }}
-        //cout << co_matrix[i][k] << " " << co_matrix[j][l] << endl;
-        //cout << co_matrix[i][l] << " " << co_matrix[j][k] << endl;
-        //cout << co_matrix[i][l] << " " << co_matrix[j][k] << endl;
-        //cout << co_matrix[i][l] << " " << co_matrix[j][k] << endl;
-        if((co_matrix[i][k]*co_matrix[j][l]==1 && co_matrix[i][l]+co_matrix[j][k]==0)||(co_matrix[i][k]+co_matrix[j][l]==0 && co_matrix[i][l]*co_matrix[j][k]==1)) //checking for checkerboard value and swap
-        {
-            co_matrix[i][k]=1-co_matrix[i][k];
-            co_matrix[i][l]=1-co_matrix[i][l];
-            co_matrix[j][k]=1-co_matrix[j][k];
-            co_matrix[j][l]=1-co_matrix[j][l];
-            //cout << "swapped!" << endl;
+        //do 100 runs to make sure enough swaps are happening. This does NOT mean that there will be 1000 swaps, but that is the theoretical max.
+        for(int a=0;a<1000;a++){
+            int i, j, k, l;
+            i = m->getRandomIndex(nrows-1);
+            while((j = m->getRandomIndex(nrows-1) ) == i ) {;if (m->control_pressed) { return 0; }}
+            k = m->getRandomIndex(ncols-1);
+            while((l = m->getRandomIndex(ncols-1)) == k ) {;if (m->control_pressed) { return 0; }}
+
+            if((co_matrix[i][k]*co_matrix[j][l]==1 && co_matrix[i][l]+co_matrix[j][k]==0)||(co_matrix[i][k]+co_matrix[j][l]==0 && co_matrix[i][l]*co_matrix[j][k]==1)) //checking for checkerboard value and swap
+            {
+                co_matrix[i][k]=1-co_matrix[i][k];
+                co_matrix[i][l]=1-co_matrix[i][l];
+                co_matrix[j][k]=1-co_matrix[j][k];
+                co_matrix[j][l]=1-co_matrix[j][l];
+
+            }
         }
-        //cout << "i: " << i << " j: " << j << " k: " << " l: " << l << endl;
+        
         return 0;
     }
     catch(exception& e) {
@@ -994,11 +276,11 @@ double TrialSwap2::t_test (double initialscore, int runs, double nullMean, vecto
         
         m->mothurOut("nullMean: " + toString(nullMean)); m->mothurOutEndLine();
         
-        m->mothurOut("sum: " + toString(sum));  m->mothurOutEndLine();
+        m->mothurOut("sum: " + toString(sum)); m->mothurOutEndLine();
         
         sampleSD = sqrt( (1/runs) * sum );
         
-        m->mothurOut("samplSD: " + toString(sampleSD));  m->mothurOutEndLine();
+        m->mothurOut("samplSD: " + toString(sampleSD)); m->mothurOutEndLine();
         
         t = (nullMean - initialscore) / (sampleSD / sqrt(runs));
         
@@ -1010,530 +292,58 @@ double TrialSwap2::t_test (double initialscore, int runs, double nullMean, vecto
     }
 }
 /**************************************************************************************************/
-int TrialSwap2::print_matrix(vector<vector<int> > &matrix, int nrows, int ncols)
+double TrialSwap2::getSD (int runs, vector<double> scorevec, double nullMean)
 {
-    try {
-         m->mothurOut("matrix:");  m->mothurOutEndLine();
-        
-        for (int i = 0; i < nrows; i++)
-        {
-            if (m->control_pressed) { return 0; }
-            for (int j = 0; j < ncols; j++)
+    try{
+        double sum = 0;
+        for(int i=0;i<runs;i++)
             {
-                m->mothurOut(toString(matrix[i][j]));            
-            }    
-            m->mothurOutEndLine();
-        }
-        return 0;
+                if (m->control_pressed) { return 0; }
+                sum += pow((scorevec[i] - nullMean),2);
+            }
+        return sqrt( (1/double(runs)) * sum );
     }
     catch(exception& e) {
-        m->errorOut(e, "TrialSwap2", "print_matrix");
+        m->errorOut(e, "TrialSwap2", "getSD");
         exit(1);
     }
 }
 /**************************************************************************************************/
-int TrialSwap2::transpose_matrix (vector<vector<int> > &initmatrix, vector<vector<int> > &co_matrix)//, int nrows, int nocols)
-{    
+double TrialSwap2::get_zscore (double sd, double nullMean, double initscore)
+{
     try {
-        int ncols = initmatrix.size(); int nrows = initmatrix[0].size(); 
-        int tmpnrows = nrows;
-        //vector<vector<int> > tmpvec;
-        vector<int> tmprow;
-        if(!co_matrix.empty())
-            co_matrix.clear();
-        for (int i=0;i<nrows;i++)
-        {       
-            if (m->control_pressed) { return 0; }
-            for (int j=0;j<ncols;j++)
-            {
-                tmprow.push_back(initmatrix[j][i]);
-            }
-            /*if (accumulate( tmprow.begin(), tmprow.end(), 0 ) == 0)
-             {
-             tmpnrows--;
-             }
-             else */
-            co_matrix.push_back(tmprow);
-            tmprow.clear();
-        }
-        nrows = tmpnrows;
-        return 0;
+        return (initscore - nullMean) / sd;
     }
     catch(exception& e) {
-        m->errorOut(e, "TrialSwap2", "transpose_matrix");
+        m->errorOut(e, "TrialSwap2", "get_zscore");
         exit(1);
     }
 }
 /**************************************************************************************************/
-int TrialSwap2::update_row_col_totals(vector<vector<int> > &co_matrix, vector<int> &rowtotal, vector<int> &columntotal)
+int TrialSwap2::print_matrix(vector<vector<int> > &matrix, int nrows, int ncols)
 {
     try {
-        //rowtotal.clear();
-        //columntotal.clear();
-        //generate (rowtotal.begin(), rowtotal.end(), 0);
-        //generate (columntotal.begin(), columntotal.end(), 0);
-        int nrows = co_matrix.size();
-        int ncols = co_matrix[0].size();
-        vector<int> tmpcolumntotal(ncols, 0);
-        vector<int> tmprowtotal(nrows, 0);
-        
-        int rowcount = 0;
+        m->mothurOut("matrix:"); m->mothurOutEndLine();
         
         for (int i = 0; i < nrows; i++)
         {
             if (m->control_pressed) { return 0; }
             for (int j = 0; j < ncols; j++)
             {
-                if (co_matrix[i][j] == 1)
-                {
-                    rowcount++;
-                    tmpcolumntotal[j]++;
-                }           
-            }    
-            tmprowtotal[i] = rowcount;
-            rowcount = 0;
+                m->mothurOut(toString(matrix[i][j]));
+            }
+            m->mothurOutEndLine();
         }
-        columntotal = tmpcolumntotal;
-        rowtotal = tmprowtotal;
-        /*cout << "rowtotal: ";
-        for(int i = 0; i<nrows; i++) { cout << rowtotal[i]; }
-        cout << "  ";
-        cout << " coltotal: ";
-        for(int i = 0; i<ncols; i++) { cout << columntotal[i]; }
-        cout << endl;*/
         return 0;
     }
     catch(exception& e) {
-        m->errorOut(e, "TrialSwap2", "update_row_col_totals");
+        m->errorOut(e, "TrialSwap2", "print_matrix");
         exit(1);
     }
 }
 /**************************************************************************************************/
-/*int main(int argc, char *argv[])
-{
-    srand (time(0));
-    char* input_filename = argv[1];
-    std::ifstream infile (input_filename);
-   
-    //skip the first line of headers
-    getline(infile, line);
-    //get the first line of data
-    getline(infile, line);
-    
-    nrows = 0;
-    ncols = 0;
-    
-    //int numspaces = 0;
-    char nextChar;
-    
-    for (int i=0; i<int(line.length()); i++)
-    {
-      nextChar = line.at(i); // gets a character
-      if (isspace(line[i]))
-          ncols++;
-    }
-    
-    ncols = ncols-3;
-    
-    cout << "number of OTUs: ";
-    cout << ncols << endl;
-    
-    infile.close();
-    
-    std::ifstream infile2 (input_filename);
-    
-    //skip first line of headers
-    getline(infile2, line);
-    
-    while (!infile2.eof())
-    { 
-        getline(infile2, line);
-        if (!line.empty())
-            nrows++;
-    }
-    
-    cout << "number of sites: ";
-    cout << nrows << endl;
-    
-    infile2.close();
-    
-    std::ifstream infile3 (input_filename);
-    
-    //skip first line
-    getline(infile3, line);
-    
-    //variables that depend on info from initial matrix
-    vector<vector<int> > co_matrix;//[nrows][ncols];
-    vector<vector<int> > initmatrix;
-    vector<int> tmprow;
-    vector<double> stats;
-    int tmpnrows = nrows;
-    
-    for (int row1=0; row1<nrows; row1++) // first line was skipped when counting, so we can start from 0
-    {
-        //ignore first 3 cols in each row, data starts on the 3th col
-        for (int i = 0; i < 3; i++)
-            infile3 >> tmp;
 
-        for (int col=0; col<ncols; col++) 
-        {
-            infile3 >> tmp;
-            //cout << tmp << endl;
-            if (atoi(tmp.c_str()) > 0)
-                tmprow.push_back(1);
-            else
-                tmprow.push_back(0);        
-        }
-        if (accumulate( tmprow.begin(), tmprow.end(), 0 ) == 0)
-        {
-            tmpnrows--;
-        }
-        else
-            initmatrix.push_back(tmprow);
-        //add the row to the matrix
-        //initmatrix.push_back(tmprow);
-        tmprow.clear();
-        //cout << tmprow << endl;
-    }   
-    
-    infile3.close();
-    nrows = tmpnrows;
-    
-    //print init matrix    
-    /* cout << "original matrix:" << endl;
 
-    for (int i = 0; i < nrows; i++)
-    {
-        for (int j = 0; j < ncols; j++)
-        {
-            cout << initmatrix[i][j];            
-        }    
-        cout << endl;
-    } */
-    
-        //for (i=0;i<ncols;i++)
-        //cout << "col "<< i<< ": " << columntotal[i] << endl;
-    
-    //co_matrix is now initmatrix and newmatrix is now co_matrix
-    
-    //remove cols where sum is 0
-    
-    //transpose matrix
-   /* int newmatrows = ncols;
-    int newmatcols = nrows;
-    int initcols = ncols; //for the combo metric
-    int initrows = nrows; //for the combo metric
-    //swap for transposed matrix
-    nrows = newmatrows;//ncols;
-    ncols = newmatcols;//nrows;
-    
-    vector<int> columntotal(ncols, 0);
-    vector<int> initcolumntotal(ncols, 0);
-    vector<int> initrowtotal(nrows, 0);
-    vector<int> rowtotal(nrows, 0);
-    
-    transpose_matrix(initmatrix,co_matrix);
-    //remove degenerate rows and cols
 
-    //cout << "transposed matrix:" << endl;
-    int rowcount = 0;
-    for (int i = 0; i < nrows; i++)
-    {
-        for (int j = 0; j < ncols; j++)
-        {
-            if (co_matrix[i][j] == 1)
-            {
-                rowcount++;
-                columntotal[j]++;
-            }
-            //cout << co_matrix[i][j];            
-        }    
-        //cout << " row total: " << rowcount << endl;
-        //cout << endl;
-        rowtotal[i] = rowcount;
-        rowcount = 0;
-    }
-    
-    initcolumntotal = rowtotal;
-    initrowtotal = columntotal;
-    
-    cout << endl;    
-    
-    runs = atol(argv[2]);    
-    int metric = atol(argv[3]);
-    int nullModel = atol(argv[4]);
-    double initscore;
-    update_row_col_totals(co_matrix, rowtotal, columntotal, ncols, nrows);
-    //do initial metric: checker, c score, v ratio or combo
-    switch(metric) 
-    {
-        case 1:
-            //c score
-            initscore = calc_c_score(co_matrix, rowtotal);
-            cout << "initial c score: " << initscore << endl;
-            //print_matrix(co_matrix, nrows, ncols);
-            break;
-            
-        case 2:
-            //checker
-            initscore = calc_checker(co_matrix, rowtotal);
-            cout << "initial checker score: " << initscore << endl;
-            break;
-            
-        case 3:
-            //v ratio
-            initscore = calc_vratio(nrows, ncols, rowtotal, columntotal);
-            cout << "initial v ratio: " << initscore << endl;
-            break;
-            
-        case 4:
-            //combo
-            initscore = calc_combo(initrows, initcols, initmatrix);
-            cout << "initial combo score: " << initscore << endl;
-            //set co_matrix equal to initmatrix because combo requires row comparisons
-            co_matrix = initmatrix;
-            break;
-            
-        case 5:
-            //test!
-            
-            //print_matrix(co_matrix, nrows, ncols);
-            //sim1(nrows, ncols, co_matrix);
-            //sim2(nrows, ncols, co_matrix);
-            //sim3(initrows, initcols, initmatrix);
-            //sim4(columntotal, rowtotal, co_matrix);
-            //sim5(initcolumntotal, initmatrix);
-            //sim6(columntotal, co_matrix);
-            //sim7(initcolumntotal, initmatrix);          
-            sim8(columntotal, rowtotal, co_matrix);
-            //print_matrix(initmatrix, initrows, initcols);
-            //print_matrix(co_matrix, nrows, ncols);
-            
-            break;
-            
-        default:
-            cout << "no metric selected!" << endl;
-            return 1;
-            
-    }
-      
-    //matrix initialization
-    //havel_hakimi(nrows, ncols, rowtotal, columntotal, co_matrix);
-    //sum_of_square(nrows, ncols, rowtotal, columntotal, co_matrix);
-    //co-matrix is now a random matrix with the same row and column totals as the initial matrix
-    
-    //null matrix burn in
-    cout << "initializing null matrix...";
-    for(int l=0;l<10000;l++)
-    {
-       //swap_checkerboards (co_matrix); 
-       //if(l%10 == 0)        
-        switch(nullModel)
-        {
-            case 1:
-                //
-                sim1(nrows, ncols, co_matrix);
-                break;
-
-            case 2:
-                //sim2
-                sim2(nrows, ncols, co_matrix);
-                //sim2plus(nrows, ncols, initrowtotal, co_matrix);
-                break;
-
-            case 3:
-                //sim3
-                sim3(initrows, initcols, initmatrix);
-                //transpose_matrix(initmatrix,co_matrix);
-                co_matrix = initmatrix;
-                break;
-
-            case 4:
-                //sim4
-                sim4(columntotal, rowtotal, co_matrix);
-                break;
-
-            case 5:
-                //sim5
-                sim5(initcolumntotal, initrowtotal, initmatrix);
-                transpose_matrix(initmatrix,co_matrix);
-                //co_matrix = initmatrix;
-                break;
-
-            case 6:
-                sim6(columntotal, co_matrix);
-                break;
-
-            case 7:
-                //sim7(ncols, nrows, initrowtotal, co_matrix);          
-                //transpose_matrix(initmatrix,co_matrix);
-                //co_matrix = initmatrix;
-                break;
-
-            case 8:
-                sim8(columntotal, rowtotal, co_matrix);
-                break;
-
-            case 9:
-                //swap_checkerboards
-                swap_checkerboards (co_matrix);
-                break;
-
-            default:
-                cout << "no null model selected!" << endl;
-                return 1;
-        }
-    }
-    cout << "done!" << endl;
-      
-    //generate null matrices and calculate the metrics
-    
-    cout << "run: " << endl;
-    for(int trial=0;trial<runs;trial++) //runs
-    {
-        printf("\b\b\b\b\b\b\b%7d",trial+1);
-        fflush(stdout);
-        
-        switch(nullModel)
-        {
-            case 1: 
-                //
-                sim1(nrows, ncols, co_matrix);
-                break;
-
-            case 2:
-                //sim2
-                sim2(nrows, ncols, co_matrix);
-                //for(int i=0;i<nrows;i++)
-                    //cout << rowtotal[i] << " ";
-                //sim2plus(nrows, ncols, initrowtotal, co_matrix);
-                break;
-
-            case 3:
-                //sim3
-                for(int i=0;i<nrows;i++)
-                    cout  << " " << rowtotal[i];
-                sim3(initrows, initcols, initmatrix);
-                transpose_matrix(initmatrix,co_matrix);
-                break;
-
-            case 4:
-                //sim4
-                sim4(columntotal, rowtotal, co_matrix);
-                break;
-
-            case 5:
-                //sim5
-                sim5(initcolumntotal, initrowtotal, initmatrix);
-                transpose_matrix(initmatrix,co_matrix);
-                break;
-
-            case 6:
-                sim6(columntotal, co_matrix);
-                break;
-
-            case 7:
-                sim7(ncols, nrows, initrowtotal, co_matrix);
-                //print_matrix(co_matrix, nrows, ncols);
-                //transpose_matrix(initmatrix,co_matrix);
-                break;
-
-            case 8:
-                //sim8(initcolumntotal, initrowtotal, co_matrix);
-                //initrow and initcol are flipped because of transposition. this is super ugly!
-                sim8(initrowtotal, initcolumntotal, co_matrix);
-                break;
-
-            case 9:
-                //swap_checkerboards
-                swap_checkerboards (co_matrix);
-                break;
-
-            default:
-                cout << "no null model selected!" << endl;
-                return 1;
-        }
-
-        //cout << endl;
-        //print_matrix(co_matrix, nrows, ncols);
-        update_row_col_totals(co_matrix, rowtotal, columntotal, ncols, nrows);
-        //cout << columntotal[1]<<endl;
-        double tmp;
-        switch(metric) 
-        {
-            case 1:
-                //c score
-                //swap_checkerboards(co_matrix);
-                //cout <<  "%" << tmp << " nrows " << nrows << " ncols " << ncols << " rowtotals ";
-                //for(int i = 0; i<nrows; i++) { cout << rowtotal[i]; }
-                //cout << endl;
-                tmp = calc_c_score(co_matrix, rowtotal);
-                //cout << "%" << tmp << " ";
-                stats.push_back(tmp);
-                //cout << "%" << tmp << " ";
-                //print_matrix(co_matrix, nrows, ncols);
-                break;
-                
-            case 2:
-                //checker
-                //swap_checkerboards(co_matrix);
-                //cout <<  "%" << tmp << " nrows " << nrows << " ncols " << ncols << " rowtotals ";
-                //for(int i = 0; i<nrows; i++) { cout << rowtotal[i]; }
-                //cout << endl;
-                tmp = calc_checker(co_matrix, rowtotal);
-                stats.push_back(tmp);
-                //cout << "%" << tmp << endl;
-                break;
-                
-            case 3:
-                //v ratio
-                stats.push_back(calc_vratio(nrows, ncols, rowtotal, columntotal));
-                break;
-                
-            case 4:
-                //combo
-                stats.push_back(calc_combo(nrows, ncols, co_matrix));
-                break;
-                
-            case 5:
-                //test!
-                break;
-                
-            default:
-                cout << "no metric selected!" << endl;
-                return 1;
-                
-        } 
-        
-    //print_matrix(co_matrix, nrows, ncols);
-    //print_matrix(initmatrix, initrows, initcols);
-
-    }
-    
-    cout << endl;
-    
-    double total = 0.0;
-    for (int i=0; i<stats.size();i++)
-    {
-        total+=stats[i];
-    }
-        
-    double nullMean = double (total/stats.size()); 
-
-    cout << '\n' << "average metric score: " << nullMean << endl;
-
-    //cout << "t-test: " << t_test(initscore, runs, nullMean, stats) << endl;
-    
-    if (metric == 1 || metric == 2)
-        cout << "pvalue: " << calc_pvalue_greaterthan (stats, initscore) << endl;
-    else
-        cout << "pvalue: " << calc_pvalue_lessthan (stats, initscore) << endl;
-         
-    //print_matrix(co_matrix, nrows, ncols);
-    
-    return 0;
-    
-}*/
-/**************************************************************************************************/