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/*
* structchi2.cpp
* Mothur
*
* Created by westcott on 12/17/10.
* Copyright 2010 Schloss Lab. All rights reserved.
*
*/
#include "structchi2.h"
/***********************************************************************/
EstOutput StructChi2::getValues(vector<SharedRAbundVector*> shared) {
try {
data.resize(1,0);
double sumA = shared[0]->getNumSeqs();
double sumB = shared[1]->getNumSeqs();
double totalSum = 0.0;
for (int i = 0; i < shared.size(); i++) { totalSum += shared[i]->getNumSeqs(); }
vector<int> sumOtus; sumOtus.resize(shared[0]->getNumBins(), 0);
//for each otu
for (int i = 0; i < shared[0]->getNumBins(); i++) {
//for each group
for (int j = 0; j < shared.size(); j++) {
sumOtus[i] += shared[j]->get(i);
}
}
double sum = 0.0;
for (int i = 0; i < shared[0]->getNumBins(); i++) {
int A = shared[0]->get(i);
int B = shared[1]->get(i);
double totalTerm = 1 / (float) sumOtus[i];
double Aterm = A / sumA;
double Bterm = B / sumB;
sum += (totalTerm * ((Aterm-Bterm)*(Aterm-Bterm)));
}
data[0] = sqrt((totalSum * sum));
if (isnan(data[0]) || isinf(data[0])) { data[0] = 0; }
return data;
}
catch(exception& e) {
m->errorOut(e, "StructChi2", "getValues");
exit(1);
}
}
/***********************************************************************/
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