X-Git-Url: https://git.donarmstrong.com/?a=blobdiff_plain;f=sharedbraycurtis.cpp;fp=sharedbraycurtis.cpp;h=3cc31773f4231cf95ee4a343b4368535b3894451;hb=25cde7ff05bbe741da1712f2c740e0bc8706e523;hp=0000000000000000000000000000000000000000;hpb=39a9b207d1046f3409781c45e38b7a871133d224;p=mothur.git diff --git a/sharedbraycurtis.cpp b/sharedbraycurtis.cpp new file mode 100644 index 0000000..3cc3177 --- /dev/null +++ b/sharedbraycurtis.cpp @@ -0,0 +1,62 @@ +/* + * sharedbraycurtis.cpp + * Mothur + * + * Created by Sarah Westcott on 3/24/09. + * Copyright 2009 Schloss Lab UMASS Amherst. All rights reserved. + * + */ + +#include "sharedbraycurtis.h" + +/***********************************************************************/ +//This is used by SharedJAbund and SharedSorAbund +EstOutput SharedBrayCurtis::getValues(SharedRAbundVector* shared1, SharedRAbundVector* shared2) { + try { + EstOutput data; + data.resize(1,0); + + int sumSharedA, sumSharedB, sumSharedAB, tempA, tempB; + sumSharedA = 0; sumSharedB = 0; sumSharedAB = 0; + + /*Xi, Yi = abundance of the ith shared OTU in A and B + sumSharedA = the sum of all shared otus in A + sumSharedB = the sum of all shared otus in B + sumSharedAB = the sum of the minimum otus int all shared otus in AB. + */ + + for (int i = 0; i < shared1->size(); i++) { + //store in temps to avoid multiple repetitive function calls + tempA = shared1->getAbundance(i); + tempB = shared2->getAbundance(i); + + + if ((tempA != 0) && (tempB != 0)) {//they are shared + sumSharedA += tempA; + sumSharedB += tempB; + + //sum the min of tempA and tempB + if (tempA < tempB) { sumSharedAB += tempA; } + else { sumSharedAB += tempB; } + } + } + + data[0] = (2 * sumSharedAB) / (float)( sumSharedA + sumSharedB); + + if (isnan(data[0]) || isinf(data[0])) { data[0] = 0; } + + return data; + } + catch(exception& e) { + cout << "Standard Error: " << e.what() << " has occurred in the SharedBrayCurtis class Function getValues. Please contact Pat Schloss at pschloss@microbio.umass.edu." << "\n"; + exit(1); + } + catch(...) { + cout << "An unknown error has occurred in the SharedBrayCurtis class Function getValues. Please contact Pat Schloss at pschloss@microbio.umass.edu." << "\n"; + exit(1); + } + + +} + +/***********************************************************************/