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+/*
+ *  matrixoutputcommand.cpp
+ *  Mothur
+ *
+ *  Created by Sarah Westcott on 5/20/09.
+ *  Copyright 2009 Schloss Lab UMASS Amherst. All rights reserved.
+ *
+ */
+
+#include "matrixoutputcommand.h"
+#include "subsample.h"
+
+//**********************************************************************************************************************
+vector<string> MatrixOutputCommand::setParameters(){   
+       try {
+               CommandParameter pshared("shared", "InputTypes", "", "", "none", "none", "none",false,true); parameters.push_back(pshared);
+               CommandParameter plabel("label", "String", "", "", "", "", "",false,false); parameters.push_back(plabel);
+        CommandParameter psubsample("subsample", "String", "", "", "", "", "",false,false); parameters.push_back(psubsample);
+               CommandParameter pgroups("groups", "String", "", "", "", "", "",false,false); parameters.push_back(pgroups);
+               CommandParameter pcalc("calc", "Multiple", "sharedsobs-sharedchao-sharedace-jabund-sorabund-jclass-sorclass-jest-sorest-thetayc-thetan-kstest-sharednseqs-ochiai-anderberg-kulczynski-kulczynskicody-lennon-morisitahorn-braycurtis-whittaker-odum-canberra-structeuclidean-structchord-hellinger-manhattan-structpearson-soergel-spearman-structkulczynski-speciesprofile-hamming-structchi2-gower-memchi2-memchord-memeuclidean-mempearson", "jclass-thetayc", "", "", "",true,false); parameters.push_back(pcalc);
+               CommandParameter poutput("output", "Multiple", "lt-square", "lt", "", "", "",false,false); parameters.push_back(poutput);
+               CommandParameter pprocessors("processors", "Number", "", "1", "", "", "",false,false); parameters.push_back(pprocessors);
+        CommandParameter piters("iters", "Number", "", "1000", "", "", "",false,false); parameters.push_back(piters);
+        CommandParameter pinputdir("inputdir", "String", "", "", "", "", "",false,false); parameters.push_back(pinputdir);
+               CommandParameter poutputdir("outputdir", "String", "", "", "", "", "",false,false); parameters.push_back(poutputdir);
+               
+               vector<string> myArray;
+               for (int i = 0; i < parameters.size(); i++) {   myArray.push_back(parameters[i].name);          }
+               return myArray;
+       }
+       catch(exception& e) {
+               m->errorOut(e, "MatrixOutputCommand", "setParameters");
+               exit(1);
+       }
+}
+//**********************************************************************************************************************
+string MatrixOutputCommand::getHelpString(){   
+       try {
+               string helpString = "";
+               ValidCalculators validCalculator;
+               helpString += "The dist.shared command parameters are shared, groups, calc, output, processors, subsample, iters and label.  shared is a required, unless you have a valid current file.\n";
+               helpString += "The groups parameter allows you to specify which of the groups in your groupfile you would like included used.\n";
+               helpString += "The group names are separated by dashes. The label parameter allows you to select what distance levels you would like distance matrices created for, and is also separated by dashes.\n";
+        helpString += "The iters parameter allows you to choose the number of times you would like to run the subsample.\n";
+        helpString += "The subsample parameter allows you to enter the size pergroup of the sample or you can set subsample=T and mothur will use the size of your smallest group.\n";
+               helpString += "The dist.shared command should be in the following format: dist.shared(groups=yourGroups, calc=yourCalcs, label=yourLabels).\n";
+               helpString += "The output parameter allows you to specify format of your distance matrix. Options are lt, and square. The default is lt.\n";
+               helpString += "Example dist.shared(groups=A-B-C, calc=jabund-sorabund).\n";
+               helpString += "The default value for groups is all the groups in your groupfile.\n";
+               helpString += "The default value for calc is jclass and thetayc.\n";
+               helpString += validCalculator.printCalc("matrix");
+               helpString += "The dist.shared command outputs a .dist file for each calculator you specify at each distance you choose.\n";
+               helpString += "Note: No spaces between parameter labels (i.e. groups), '=' and parameters (i.e.yourGroups).\n";
+               return helpString;
+       }
+       catch(exception& e) {
+               m->errorOut(e, "MatrixOutputCommand", "getHelpString");
+               exit(1);
+       }
+}
+//**********************************************************************************************************************
+MatrixOutputCommand::MatrixOutputCommand(){    
+       try {
+               abort = true; calledHelp = true; 
+               setParameters();
+               vector<string> tempOutNames;
+               outputTypes["phylip"] = tempOutNames;
+       }
+       catch(exception& e) {
+               m->errorOut(e, "MatrixOutputCommand", "MatrixOutputCommand");
+               exit(1);
+       }
+}
+//**********************************************************************************************************************
+
+MatrixOutputCommand::MatrixOutputCommand(string option)  {
+       try {
+               abort = false; calledHelp = false;   
+               allLines = 1;
+                               
+               //allow user to run help
+               if(option == "help") {  help(); abort = true; calledHelp = true; }
+               else if(option == "citation") { citation(); abort = true; calledHelp = true;}
+               
+               else {
+                       vector<string> myArray = setParameters();
+                       
+                       OptionParser parser(option);
+                       map<string,string> parameters  = parser.getParameters();
+                       map<string,string>::iterator it;
+                       
+                       ValidParameters validParameter;
+               
+                       //check to make sure all parameters are valid for command
+                       for (it = parameters.begin(); it != parameters.end(); it++) { 
+                               if (validParameter.isValidParameter(it->first, myArray, it->second) != true) {  abort = true;  }
+                       }
+                       
+                       //initialize outputTypes
+                       vector<string> tempOutNames;
+                       outputTypes["phylip"] = tempOutNames;
+                       
+                       //if the user changes the input directory command factory will send this info to us in the output parameter 
+                       string inputDir = validParameter.validFile(parameters, "inputdir", false);              
+                       if (inputDir == "not found"){   inputDir = "";          }
+                       else {
+                               string path;
+                               it = parameters.find("shared");
+                               //user has given a template file
+                               if(it != parameters.end()){ 
+                                       path = m->hasPath(it->second);
+                                       //if the user has not given a path then, add inputdir. else leave path alone.
+                                       if (path == "") {       parameters["shared"] = inputDir + it->second;           }
+                               }
+                       }
+                       
+                       sharedfile = validParameter.validFile(parameters, "shared", true);
+                       if (sharedfile == "not found") {                        
+                               //if there is a current shared file, use it
+                               sharedfile = m->getSharedFile(); 
+                               if (sharedfile != "") { m->mothurOut("Using " + sharedfile + " as input file for the shared parameter."); m->mothurOutEndLine(); }
+                               else {  m->mothurOut("You have no current sharedfile and the shared parameter is required."); m->mothurOutEndLine(); abort = true; }
+                       }else if (sharedfile == "not open") { sharedfile = ""; abort = true; }
+                       else { m->setSharedFile(sharedfile); }
+                       
+                       //if the user changes the output directory command factory will send this info to us in the output parameter 
+                       outputDir = validParameter.validFile(parameters, "outputdir", false);           if (outputDir == "not found"){  
+                               outputDir = ""; 
+                               outputDir += m->hasPath(sharedfile); //if user entered a file with a path then preserve it      
+                       }
+                       
+                       //check for optional parameter and set defaults
+                       // ...at some point should added some additional type checking...
+                       label = validParameter.validFile(parameters, "label", false);                   
+                       if (label == "not found") { label = ""; }
+                       else { 
+                               if(label != "all") {  m->splitAtDash(label, labels);  allLines = 0;  }
+                               else { allLines = 1;  }
+                       }
+                       
+                       output = validParameter.validFile(parameters, "output", false);         if(output == "not found"){      output = "lt"; }
+                       if ((output != "lt") && (output != "square")) { m->mothurOut(output + " is not a valid output form. Options are lt and square. I will use lt."); m->mothurOutEndLine(); output = "lt"; }
+                       
+                       groups = validParameter.validFile(parameters, "groups", false);                 
+                       if (groups == "not found") { groups = ""; }
+                       else { 
+                               m->splitAtDash(groups, Groups);
+                               m->setGroups(Groups);
+                       }
+                       
+                       string temp = validParameter.validFile(parameters, "processors", false);        if (temp == "not found"){       temp = m->getProcessors();      }
+                       m->setProcessors(temp);
+                       m->mothurConvert(temp, processors); 
+                               
+                       calc = validParameter.validFile(parameters, "calc", false);                     
+                       if (calc == "not found") { calc = "jclass-thetayc";  }
+                       else { 
+                                if (calc == "default")  {  calc = "jclass-thetayc";  }
+                       }
+                       m->splitAtDash(calc, Estimators);
+                       if (m->inUsersGroups("citation", Estimators)) { 
+                               ValidCalculators validCalc; validCalc.printCitations(Estimators); 
+                               //remove citation from list of calcs
+                               for (int i = 0; i < Estimators.size(); i++) { if (Estimators[i] == "citation") {  Estimators.erase(Estimators.begin()+i); break; } }
+                       }
+            
+            temp = validParameter.validFile(parameters, "iters", false);                       if (temp == "not found") { temp = "1000"; }
+                       m->mothurConvert(temp, iters); 
+            
+            temp = validParameter.validFile(parameters, "subsample", false);           if (temp == "not found") { temp = "F"; }
+                       if (m->isNumeric1(temp)) { m->mothurConvert(temp, subsampleSize); subsample = true; }
+            else {  
+                if (m->isTrue(temp)) { subsample = true; subsampleSize = -1; }  //we will set it to smallest group later 
+                else { subsample = false; }
+            }
+            
+            if (subsample == false) { iters = 1; }
+            
+                       if (abort == false) {
+                       
+                               ValidCalculators validCalculator;
+                               
+                               int i;
+                               for (i=0; i<Estimators.size(); i++) {
+                                       if (validCalculator.isValidCalculator("matrix", Estimators[i]) == true) { 
+                                               if (Estimators[i] == "sharedsobs") { 
+                                                       matrixCalculators.push_back(new SharedSobsCS());
+                                               }else if (Estimators[i] == "sharedchao") { 
+                                                       matrixCalculators.push_back(new SharedChao1());
+                                               }else if (Estimators[i] == "sharedace") { 
+                                                       matrixCalculators.push_back(new SharedAce());
+                                               }else if (Estimators[i] == "jabund") {  
+                                                       matrixCalculators.push_back(new JAbund());
+                                               }else if (Estimators[i] == "sorabund") { 
+                                                       matrixCalculators.push_back(new SorAbund());
+                                               }else if (Estimators[i] == "jclass") { 
+                                                       matrixCalculators.push_back(new Jclass());
+                                               }else if (Estimators[i] == "sorclass") { 
+                                                       matrixCalculators.push_back(new SorClass());
+                                               }else if (Estimators[i] == "jest") { 
+                                                       matrixCalculators.push_back(new Jest());
+                                               }else if (Estimators[i] == "sorest") { 
+                                                       matrixCalculators.push_back(new SorEst());
+                                               }else if (Estimators[i] == "thetayc") { 
+                                                       matrixCalculators.push_back(new ThetaYC());
+                                               }else if (Estimators[i] == "thetan") { 
+                                                       matrixCalculators.push_back(new ThetaN());
+                                               }else if (Estimators[i] == "kstest") { 
+                                                       matrixCalculators.push_back(new KSTest());
+                                               }else if (Estimators[i] == "sharednseqs") { 
+                                                       matrixCalculators.push_back(new SharedNSeqs());
+                                               }else if (Estimators[i] == "ochiai") { 
+                                                       matrixCalculators.push_back(new Ochiai());
+                                               }else if (Estimators[i] == "anderberg") { 
+                                                       matrixCalculators.push_back(new Anderberg());
+                                               }else if (Estimators[i] == "kulczynski") { 
+                                                       matrixCalculators.push_back(new Kulczynski());
+                                               }else if (Estimators[i] == "kulczynskicody") { 
+                                                       matrixCalculators.push_back(new KulczynskiCody());
+                                               }else if (Estimators[i] == "lennon") { 
+                                                       matrixCalculators.push_back(new Lennon());
+                                               }else if (Estimators[i] == "morisitahorn") { 
+                                                       matrixCalculators.push_back(new MorHorn());
+                                               }else if (Estimators[i] == "braycurtis") { 
+                                                       matrixCalculators.push_back(new BrayCurtis());
+                                               }else if (Estimators[i] == "whittaker") { 
+                                                       matrixCalculators.push_back(new Whittaker());
+                                               }else if (Estimators[i] == "odum") { 
+                                                       matrixCalculators.push_back(new Odum());
+                                               }else if (Estimators[i] == "canberra") { 
+                                                       matrixCalculators.push_back(new Canberra());
+                                               }else if (Estimators[i] == "structeuclidean") { 
+                                                       matrixCalculators.push_back(new StructEuclidean());
+                                               }else if (Estimators[i] == "structchord") { 
+                                                       matrixCalculators.push_back(new StructChord());
+                                               }else if (Estimators[i] == "hellinger") { 
+                                                       matrixCalculators.push_back(new Hellinger());
+                                               }else if (Estimators[i] == "manhattan") { 
+                                                       matrixCalculators.push_back(new Manhattan());
+                                               }else if (Estimators[i] == "structpearson") { 
+                                                       matrixCalculators.push_back(new StructPearson());
+                                               }else if (Estimators[i] == "soergel") { 
+                                                       matrixCalculators.push_back(new Soergel());
+                                               }else if (Estimators[i] == "spearman") { 
+                                                       matrixCalculators.push_back(new Spearman());
+                                               }else if (Estimators[i] == "structkulczynski") { 
+                                                       matrixCalculators.push_back(new StructKulczynski());
+                                               }else if (Estimators[i] == "speciesprofile") { 
+                                                       matrixCalculators.push_back(new SpeciesProfile());
+                                               }else if (Estimators[i] == "hamming") { 
+                                                       matrixCalculators.push_back(new Hamming());
+                                               }else if (Estimators[i] == "structchi2") { 
+                                                       matrixCalculators.push_back(new StructChi2());
+                                               }else if (Estimators[i] == "gower") { 
+                                                       matrixCalculators.push_back(new Gower());
+                                               }else if (Estimators[i] == "memchi2") { 
+                                                       matrixCalculators.push_back(new MemChi2());
+                                               }else if (Estimators[i] == "memchord") { 
+                                                       matrixCalculators.push_back(new MemChord());
+                                               }else if (Estimators[i] == "memeuclidean") { 
+                                                       matrixCalculators.push_back(new MemEuclidean());
+                                               }else if (Estimators[i] == "mempearson") { 
+                                                       matrixCalculators.push_back(new MemPearson());
+                                               }
+                                       }
+                               }
+                               
+                       }
+               }
+               
+       }
+       catch(exception& e) {
+               m->errorOut(e, "MatrixOutputCommand", "MatrixOutputCommand");
+               exit(1);
+       }
+}
+
+//**********************************************************************************************************************
+
+MatrixOutputCommand::~MatrixOutputCommand(){}
+
+//**********************************************************************************************************************
+
+int MatrixOutputCommand::execute(){
+       try {
+               
+               if (abort == true) { if (calledHelp) { return 0; }  return 2;   }
+                       
+               //if the users entered no valid calculators don't execute command
+               if (matrixCalculators.size() == 0) { m->mothurOut("No valid calculators."); m->mothurOutEndLine();  return 0; }
+                       
+               input = new InputData(sharedfile, "sharedfile");
+               lookup = input->getSharedRAbundVectors();
+               string lastLabel = lookup[0]->getLabel();
+               
+               //if the users enters label "0.06" and there is no "0.06" in their file use the next lowest label.
+               set<string> processedLabels;
+               set<string> userLabels = labels;
+                                       
+               if (lookup.size() < 2) { m->mothurOut("You have not provided enough valid groups.  I cannot run the command."); m->mothurOutEndLine(); delete input; for (int i = 0; i < lookup.size(); i++) {  delete lookup[i];  } return 0;}
+        
+        if (subsample) { 
+            if (subsampleSize == -1) { //user has not set size, set size = smallest samples size
+                subsampleSize = lookup[0]->getNumSeqs();
+                for (int i = 1; i < lookup.size(); i++) {
+                    int thisSize = lookup[i]->getNumSeqs();
+                    
+                    if (thisSize < subsampleSize) {    subsampleSize = thisSize;       }
+                }
+            }else {
+                m->clearGroups();
+                Groups.clear();
+                vector<SharedRAbundVector*> temp;
+                for (int i = 0; i < lookup.size(); i++) {
+                    if (lookup[i]->getNumSeqs() < subsampleSize) { 
+                        m->mothurOut(lookup[i]->getGroup() + " contains " + toString(lookup[i]->getNumSeqs()) + ". Eliminating."); m->mothurOutEndLine();
+                        delete lookup[i];
+                    }else { 
+                        Groups.push_back(lookup[i]->getGroup()); 
+                        temp.push_back(lookup[i]);
+                    }
+                } 
+                lookup = temp;
+                m->setGroups(Groups);
+            }
+            
+            if (lookup.size() < 2) { m->mothurOut("You have not provided enough valid groups.  I cannot run the command."); m->mothurOutEndLine(); m->control_pressed = true; delete input; return 0; }
+        }
+        
+               numGroups = lookup.size();
+        lines.resize(processors);
+               for (int i = 0; i < processors; i++) {
+                       lines[i].start = int (sqrt(float(i)/float(processors)) * numGroups);
+                       lines[i].end = int (sqrt(float(i+1)/float(processors)) * numGroups);
+               }       
+        
+               if (m->control_pressed) { delete input; for (int i = 0; i < lookup.size(); i++) {  delete lookup[i];  } m->clearGroups(); return 0;  }
+                               
+               //as long as you are not at the end of the file or done wih the lines you want
+               while((lookup[0] != NULL) && ((allLines == 1) || (userLabels.size() != 0))) {
+               
+                       if (m->control_pressed) { outputTypes.clear(); delete input; for (int i = 0; i < lookup.size(); i++) {  delete lookup[i];  } for (int i = 0; i < outputNames.size(); i++) {     m->mothurRemove(outputNames[i]); } m->clearGroups(); return 0;  }
+               
+                       if(allLines == 1 || labels.count(lookup[0]->getLabel()) == 1){                  
+                               m->mothurOut(lookup[0]->getLabel()); m->mothurOutEndLine();
+                               process(lookup);
+                               
+                               processedLabels.insert(lookup[0]->getLabel());
+                               userLabels.erase(lookup[0]->getLabel());
+                       }
+                       
+                       if ((m->anyLabelsToProcess(lookup[0]->getLabel(), userLabels, "") == true) && (processedLabels.count(lastLabel) != 1)) {
+                               string saveLabel = lookup[0]->getLabel();
+                               
+                               for (int i = 0; i < lookup.size(); i++) {  delete lookup[i];  } 
+                               lookup = input->getSharedRAbundVectors(lastLabel);
+
+                               m->mothurOut(lookup[0]->getLabel()); m->mothurOutEndLine();
+                               process(lookup);
+                               
+                               processedLabels.insert(lookup[0]->getLabel());
+                               userLabels.erase(lookup[0]->getLabel());
+                               
+                               //restore real lastlabel to save below
+                               lookup[0]->setLabel(saveLabel);
+                       }
+
+                       lastLabel = lookup[0]->getLabel();                      
+                       
+                       //get next line to process
+                       for (int i = 0; i < lookup.size(); i++) {  delete lookup[i];  } 
+                       lookup = input->getSharedRAbundVectors();
+               }
+               
+               if (m->control_pressed) { outputTypes.clear(); delete input; for (int i = 0; i < outputNames.size(); i++) {     m->mothurRemove(outputNames[i]); } m->clearGroups(); return 0;  }
+
+               //output error messages about any remaining user labels
+               set<string>::iterator it;
+               bool needToRun = false;
+               for (it = userLabels.begin(); it != userLabels.end(); it++) {  
+                       m->mothurOut("Your file does not include the label " + *it);  
+                       if (processedLabels.count(lastLabel) != 1) {
+                               m->mothurOut(". I will use " + lastLabel + "."); m->mothurOutEndLine();
+                               needToRun = true;
+                       }else {
+                               m->mothurOut(". Please refer to " + lastLabel + "."); m->mothurOutEndLine();
+                       }
+               }
+               
+               if (m->control_pressed) { outputTypes.clear(); delete input;  for (int i = 0; i < outputNames.size(); i++) {    m->mothurRemove(outputNames[i]); } m->clearGroups(); return 0;  }
+
+               //run last label if you need to
+               if (needToRun == true)  {
+                       for (int i = 0; i < lookup.size(); i++) {  if (lookup[i] != NULL) {  delete lookup[i]; }  } 
+                       lookup = input->getSharedRAbundVectors(lastLabel);
+
+                       m->mothurOut(lookup[0]->getLabel()); m->mothurOutEndLine();
+                       process(lookup);
+                       for (int i = 0; i < lookup.size(); i++) {  delete lookup[i];  } 
+               }
+               
+               if (m->control_pressed) { outputTypes.clear();  delete input;  for (int i = 0; i < outputNames.size(); i++) {   m->mothurRemove(outputNames[i]); } m->clearGroups(); return 0;  }
+               
+               //reset groups parameter
+               m->clearGroups();  
+               
+               //set phylip file as new current phylipfile
+               string current = "";
+               itTypes = outputTypes.find("phylip");
+               if (itTypes != outputTypes.end()) {
+                       if ((itTypes->second).size() != 0) { current = (itTypes->second)[0]; m->setPhylipFile(current); }
+               }
+               
+               m->mothurOutEndLine();
+               m->mothurOut("Output File Names: "); m->mothurOutEndLine();
+               for (int i = 0; i < outputNames.size(); i++) {  m->mothurOut(outputNames[i]); m->mothurOutEndLine();    }
+               m->mothurOutEndLine();
+
+
+               return 0;
+       }
+       catch(exception& e) {
+               m->errorOut(e, "MatrixOutputCommand", "execute");
+               exit(1);
+       }
+}
+/***********************************************************/
+void MatrixOutputCommand::printSims(ostream& out, vector< vector<double> >& simMatrix) {
+       try {
+               
+               out.setf(ios::fixed, ios::floatfield); out.setf(ios::showpoint);
+               
+               //output num seqs
+               out << simMatrix.size() << endl;
+               
+               if (output == "lt") {
+                       for (int m = 0; m < simMatrix.size(); m++)      {
+                               out << lookup[m]->getGroup() << '\t';
+                               for (int n = 0; n < m; n++)     {
+                                       out << simMatrix[m][n] << '\t'; 
+                               }
+                               out << endl;
+                       }
+               }else{
+                       for (int m = 0; m < simMatrix.size(); m++)      {
+                               out << lookup[m]->getGroup() << '\t';
+                               for (int n = 0; n < simMatrix[m].size(); n++)   {
+                                       out << simMatrix[m][n] << '\t'; 
+                               }
+                               out << endl;
+                       }
+               }
+       }
+       catch(exception& e) {
+               m->errorOut(e, "MatrixOutputCommand", "printSims");
+               exit(1);
+       }
+}
+/***********************************************************/
+int MatrixOutputCommand::process(vector<SharedRAbundVector*> thisLookup){
+       try {
+               vector< vector< vector<seqDist> > > calcDistsTotals;  //each iter, one for each calc, then each groupCombos dists. this will be used to make .dist files
+        vector< vector<seqDist>  > calcDists; calcDists.resize(matrixCalculators.size());              
+
+        for (int thisIter = 0; thisIter < iters; thisIter++) {
+            
+            vector<SharedRAbundVector*> thisItersLookup = thisLookup;
+            
+            if (subsample) {
+                SubSample sample;
+                vector<string> tempLabels; //dont need since we arent printing the sampled sharedRabunds
+                
+                //make copy of lookup so we don't get access violations
+                vector<SharedRAbundVector*> newLookup;
+                for (int k = 0; k < thisItersLookup.size(); k++) {
+                    SharedRAbundVector* temp = new SharedRAbundVector();
+                    temp->setLabel(thisItersLookup[k]->getLabel());
+                    temp->setGroup(thisItersLookup[k]->getGroup());
+                    newLookup.push_back(temp);
+                }
+                
+                //for each bin
+                for (int k = 0; k < thisItersLookup[0]->getNumBins(); k++) {
+                    if (m->control_pressed) { for (int j = 0; j < newLookup.size(); j++) {  delete newLookup[j];  } return 0; }
+                    for (int j = 0; j < thisItersLookup.size(); j++) { newLookup[j]->push_back(thisItersLookup[j]->getAbundance(k), thisItersLookup[j]->getGroup()); }
+                }
+                
+                tempLabels = sample.getSample(newLookup, subsampleSize);
+                thisItersLookup = newLookup;
+            }
+        
+            if(processors == 1){
+                driver(thisItersLookup, 0, numGroups, calcDists);
+            }else{
+                int process = 1;
+                vector<int> processIDS;
+                
+                #if defined (__APPLE__) || (__MACH__) || (linux) || (__linux) || (__linux__) || (__unix__) || (__unix)
+                //loop through and create all the processes you want
+                while (process != processors) {
+                    int pid = fork();
+                    
+                    if (pid > 0) {
+                        processIDS.push_back(pid); 
+                        process++;
+                    }else if (pid == 0){
+                        
+                        driver(thisItersLookup, lines[process].start, lines[process].end, calcDists);   
+                        
+                        string tempdistFileName = m->getRootName(m->getSimpleName(sharedfile)) + toString(getpid()) + ".dist";
+                        ofstream outtemp;
+                        m->openOutputFile(tempdistFileName, outtemp);
+                            
+                        for (int i = 0; i < calcDists.size(); i++) {
+                            outtemp << calcDists[i].size() << endl;
+                                
+                            for (int j = 0; j < calcDists[i].size(); j++) {
+                                outtemp << calcDists[i][j].seq1 << '\t' << calcDists[i][j].seq2 << '\t' << calcDists[i][j].dist << endl;
+                            }
+                        }
+                        outtemp.close();
+                                        
+                        exit(0);
+                    }else { 
+                        m->mothurOut("[ERROR]: unable to spawn the necessary processes."); m->mothurOutEndLine(); 
+                        for (int i = 0; i < processIDS.size(); i++) { kill (processIDS[i], SIGINT); }
+                        exit(0);
+                    }
+                }
+                
+                //parent do your part
+                driver(thisItersLookup, lines[0].start, lines[0].end, calcDists);   
+                            
+                //force parent to wait until all the processes are done
+                for (int i = 0; i < processIDS.size(); i++) {
+                    int temp = processIDS[i];
+                    wait(&temp);
+                }
+                
+                for (int i = 0; i < processIDS.size(); i++) {
+                    string tempdistFileName = m->getRootName(m->getSimpleName(sharedfile)) + toString(processIDS[i]) +  ".dist";
+                    ifstream intemp;
+                    m->openInputFile(tempdistFileName, intemp);
+                        
+                    for (int k = 0; k < calcDists.size(); k++) {
+                        int size = 0;
+                        intemp >> size; m->gobble(intemp);
+                            
+                        for (int j = 0; j < size; j++) {
+                            int seq1 = 0;
+                            int seq2 = 0;
+                            float dist = 1.0;
+                                
+                            intemp >> seq1 >> seq2 >> dist;   m->gobble(intemp);
+                                
+                            seqDist tempDist(seq1, seq2, dist);
+                            calcDists[k].push_back(tempDist);
+                        }
+                    }
+                    intemp.close();
+                    m->mothurRemove(tempdistFileName);
+                }
+                #else
+                //////////////////////////////////////////////////////////////////////////////////////////////////////
+                //Windows version shared memory, so be careful when passing variables through the distSharedData struct. 
+                //Above fork() will clone, so memory is separate, but that's not the case with windows, 
+                //Taking advantage of shared memory to pass results vectors.
+                //////////////////////////////////////////////////////////////////////////////////////////////////////
+                
+                vector<distSharedData*> pDataArray; 
+                DWORD   dwThreadIdArray[processors-1];
+                HANDLE  hThreadArray[processors-1]; 
+                
+                //Create processor worker threads.
+                for( int i=1; i<processors; i++ ){
+                    
+                    //make copy of lookup so we don't get access violations
+                    vector<SharedRAbundVector*> newLookup;
+                    for (int k = 0; k < thisItersLookup.size(); k++) {
+                        SharedRAbundVector* temp = new SharedRAbundVector();
+                        temp->setLabel(thisItersLookup[k]->getLabel());
+                        temp->setGroup(thisItersLookup[k]->getGroup());
+                        newLookup.push_back(temp);
+                    }
+                    
+                    //for each bin
+                    for (int k = 0; k < thisItersLookup[0]->getNumBins(); k++) {
+                        if (m->control_pressed) { for (int j = 0; j < newLookup.size(); j++) {  delete newLookup[j];  } return 0; }
+                        for (int j = 0; j < thisItersLookup.size(); j++) { newLookup[j]->push_back(thisItersLookup[j]->getAbundance(k), thisItersLookup[j]->getGroup()); }
+                    }
+                    
+                    // Allocate memory for thread data.
+                    distSharedData* tempSum = new distSharedData(m, lines[i].start, lines[i].end, Estimators, newLookup);
+                    pDataArray.push_back(tempSum);
+                    processIDS.push_back(i);
+                    
+                    hThreadArray[i-1] = CreateThread(NULL, 0, MyDistSharedThreadFunction, pDataArray[i-1], 0, &dwThreadIdArray[i-1]);   
+                }
+                
+                //parent do your part
+                driver(thisItersLookup, lines[0].start, lines[0].end, calcDists);   
+                           
+                //Wait until all threads have terminated.
+                WaitForMultipleObjects(processors-1, hThreadArray, TRUE, INFINITE);
+                
+                //Close all thread handles and free memory allocations.
+                for(int i=0; i < pDataArray.size(); i++){
+                    for (int j = 0; j < pDataArray[i]->thisLookup.size(); j++) {  delete pDataArray[i]->thisLookup[j];  } 
+                    
+                    for (int k = 0; k < calcDists.size(); k++) {
+                        int size = pDataArray[i]->calcDists[k].size();
+                        for (int j = 0; j < size; j++) {    calcDists[k].push_back(pDataArray[i]->calcDists[k][j]);    }
+                    }
+                    
+                    CloseHandle(hThreadArray[i]);
+                    delete pDataArray[i];
+                }
+
+                #endif
+            }
+            
+            calcDistsTotals.push_back(calcDists);
+            
+            if (subsample) {  
+                
+                //clean up memory
+                for (int i = 0; i < thisItersLookup.size(); i++) { delete thisItersLookup[i]; }
+                thisItersLookup.clear();
+                for (int i = 0; i < calcDists.size(); i++) {  calcDists[i].clear(); }
+            }
+               }
+               
+        if (iters != 1) {
+            //we need to find the average distance and standard deviation for each groups distance
+            
+            vector< vector<seqDist>  > calcAverages; calcAverages.resize(matrixCalculators.size()); 
+            for (int i = 0; i < calcAverages.size(); i++) {  //initialize sums to zero.
+                calcAverages[i].resize(calcDistsTotals[0][i].size());
+                
+                for (int j = 0; j < calcAverages[i].size(); j++) {
+                    calcAverages[i][j].seq1 = calcDists[i][j].seq1;
+                    calcAverages[i][j].seq2 = calcDists[i][j].seq2;
+                    calcAverages[i][j].dist = 0.0;
+                }
+            }
+            
+            for (int thisIter = 0; thisIter < iters; thisIter++) { //sum all groups dists for each calculator
+                for (int i = 0; i < calcAverages.size(); i++) {  //initialize sums to zero.
+                    for (int j = 0; j < calcAverages[i].size(); j++) {
+                        calcAverages[i][j].dist += calcDistsTotals[thisIter][i][j].dist;
+                    }
+                }
+            }
+            
+            for (int i = 0; i < calcAverages.size(); i++) {  //finds average.
+                for (int j = 0; j < calcAverages[i].size(); j++) {
+                    calcAverages[i][j].dist /= (float) iters;
+                }
+            }
+            
+            //find standard deviation
+            vector< vector<seqDist>  > stdDev; stdDev.resize(matrixCalculators.size());
+            for (int i = 0; i < stdDev.size(); i++) {  //initialize sums to zero.
+                stdDev[i].resize(calcDistsTotals[0][i].size());
+                
+                for (int j = 0; j < stdDev[i].size(); j++) {
+                    stdDev[i][j].seq1 = calcDists[i][j].seq1;
+                    stdDev[i][j].seq2 = calcDists[i][j].seq2;
+                    stdDev[i][j].dist = 0.0;
+                }
+            }
+            
+            for (int thisIter = 0; thisIter < iters; thisIter++) { //compute the difference of each dist from the mean, and square the result of each
+                for (int i = 0; i < stdDev.size(); i++) {  
+                    for (int j = 0; j < stdDev[i].size(); j++) {
+                        stdDev[i][j].dist += ((calcDistsTotals[thisIter][i][j].dist - calcAverages[i][j].dist) * (calcDistsTotals[thisIter][i][j].dist - calcAverages[i][j].dist));
+                    }
+                }
+            }
+
+            for (int i = 0; i < stdDev.size(); i++) {  //finds average.
+                for (int j = 0; j < stdDev[i].size(); j++) {
+                    stdDev[i][j].dist /= (float) iters;
+                    stdDev[i][j].dist = sqrt(stdDev[i][j].dist);
+                }
+            }
+            
+            //print results
+            for (int i = 0; i < calcDists.size(); i++) {
+                vector< vector<double> > matrix; //square matrix to represent the distance
+                matrix.resize(thisLookup.size());
+                for (int k = 0; k < thisLookup.size(); k++) {  matrix[k].resize(thisLookup.size(), 0.0); }
+                
+                vector< vector<double> > stdmatrix; //square matrix to represent the stdDev
+                stdmatrix.resize(thisLookup.size());
+                for (int k = 0; k < thisLookup.size(); k++) {  stdmatrix[k].resize(thisLookup.size(), 0.0); }
+
+            
+                for (int j = 0; j < calcAverages[i].size(); j++) {
+                    int row = calcAverages[i][j].seq1;
+                    int column = calcAverages[i][j].seq2;
+                    float dist = calcAverages[i][j].dist;
+                    float stdDist = stdDev[i][j].dist;
+                    
+                    matrix[row][column] = dist;
+                    matrix[column][row] = dist;
+                    stdmatrix[row][column] = stdDist;
+                    stdmatrix[column][row] = stdDist;
+                }
+            
+                string distFileName = outputDir + m->getRootName(m->getSimpleName(sharedfile)) + matrixCalculators[i]->getName() + "." + thisLookup[0]->getLabel()  + "." + output + ".ave.dist";
+                outputNames.push_back(distFileName); outputTypes["phylip"].push_back(distFileName);
+                ofstream outAve;
+                m->openOutputFile(distFileName, outAve);
+                outAve.setf(ios::fixed, ios::floatfield); outAve.setf(ios::showpoint);
+                
+                printSims(outAve, matrix);
+                
+                outAve.close();
+                
+                distFileName = outputDir + m->getRootName(m->getSimpleName(sharedfile)) + matrixCalculators[i]->getName() + "." + thisLookup[0]->getLabel()  + "." + output + ".std.dist";
+                outputNames.push_back(distFileName); outputTypes["phylip"].push_back(distFileName);
+                ofstream outSTD;
+                m->openOutputFile(distFileName, outSTD);
+                outSTD.setf(ios::fixed, ios::floatfield); outSTD.setf(ios::showpoint);
+                
+                printSims(outSTD, stdmatrix);
+                
+                outSTD.close();
+
+            }
+        }else {
+        
+            for (int i = 0; i < calcDists.size(); i++) {
+                if (m->control_pressed) { break; }
+                
+                //initialize matrix
+                vector< vector<double> > matrix; //square matrix to represent the distance
+                matrix.resize(thisLookup.size());
+                for (int k = 0; k < thisLookup.size(); k++) {  matrix[k].resize(thisLookup.size(), 0.0); }
+                
+                for (int j = 0; j < calcDists[i].size(); j++) {
+                    int row = calcDists[i][j].seq1;
+                    int column = calcDists[i][j].seq2;
+                    double dist = calcDists[i][j].dist;
+                    
+                    matrix[row][column] = dist;
+                    matrix[column][row] = dist;
+                }
+                
+                string distFileName = outputDir + m->getRootName(m->getSimpleName(sharedfile)) + matrixCalculators[i]->getName() + "." + thisLookup[0]->getLabel()  + "." + output + ".dist";
+                outputNames.push_back(distFileName); outputTypes["phylip"].push_back(distFileName);
+                ofstream outDist;
+                m->openOutputFile(distFileName, outDist);
+                outDist.setf(ios::fixed, ios::floatfield); outDist.setf(ios::showpoint);
+                
+                printSims(outDist, matrix);
+                
+                outDist.close();
+            }
+        }
+               
+               return 0;
+       }
+       catch(exception& e) {
+               m->errorOut(e, "MatrixOutputCommand", "process");
+               exit(1);
+       }
+}
+/**************************************************************************************************/
+int MatrixOutputCommand::driver(vector<SharedRAbundVector*> thisLookup, int start, int end, vector< vector<seqDist> >& calcDists) { 
+       try {
+               vector<SharedRAbundVector*> subset;
+               for (int k = start; k < end; k++) { // pass cdd each set of groups to compare
+                       
+                       for (int l = 0; l < k; l++) {
+                               
+                               if (k != l) { //we dont need to similiarity of a groups to itself
+                                       subset.clear(); //clear out old pair of sharedrabunds
+                                       //add new pair of sharedrabunds
+                                       subset.push_back(thisLookup[k]); subset.push_back(thisLookup[l]); 
+                                       
+                                       for(int i=0;i<matrixCalculators.size();i++) {
+                                               
+                                               //if this calc needs all groups to calculate the pair load all groups
+                                               if (matrixCalculators[i]->getNeedsAll()) { 
+                                                       //load subset with rest of lookup for those calcs that need everyone to calc for a pair
+                                                       for (int w = 0; w < thisLookup.size(); w++) {
+                                                               if ((w != k) && (w != l)) { subset.push_back(thisLookup[w]); }
+                                                       }
+                                               }
+                                               
+                                               vector<double> tempdata = matrixCalculators[i]->getValues(subset); //saves the calculator outputs
+                                               
+                                               if (m->control_pressed) { return 1; }
+                                               
+                                               seqDist temp(l, k, tempdata[0]);
+                                               calcDists[i].push_back(temp);
+                                       }
+                               }
+                       }
+               }
+               
+               return 0;
+       }
+       catch(exception& e) {
+               m->errorOut(e, "MatrixOutputCommand", "driver");
+               exit(1);
+       }
+}
+/***********************************************************/
+
+
+