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/*
* smithwilson.cpp
* Mothur
*
* Created by Pat Schloss on 8/21/10.
* Copyright 2010 Schloss Lab. All rights reserved.
*
*/
#include "smithwilson.h"
/***********************************************************************/
EstOutput SmithWilson::getValues(SAbundVector* rank){
try {
data.resize(1,0);
double maxRank = rank->getMaxRank();
double sobs = rank->getNumBins();
double innerSum = 0;
for(int i=1;i<=maxRank;i++){
innerSum += rank->get(i) * log(i);
}
innerSum /= sobs;
double outerSum = 0;
for(int i=1;i<=maxRank;i++){
outerSum += rank->get(i) * (log(i) - innerSum) * (log(i) - innerSum);
}
outerSum /= sobs;
if(outerSum > 0){
data[0] = 1.0000 - 2.0000 / (3.14159 * atan(outerSum));
}
else{
data[0] = 1.0000;
}
return data;
}
catch(exception& e) {
m->errorOut(e, "InvSimpson", "getValues");
exit(1);
}
}
/***********************************************************************/
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