25 lines
515 B
C++
25 lines
515 B
C++
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#include "TFile.h"
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#include "TTree.h"
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#include "TH1F.h"
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void SaveTH1IntoText(TH1F * hist, TString fileName){
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int nBin = hist->GetNbinsX();
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FILE * paraOut;
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paraOut = fopen (fileName.Data(), "w+");
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printf("=========== save histogram to %s \n", fileName.Data());
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for( int i = 1; i <= nBin ; i++){
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double x = hist->GetBinCenter(i);
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double y = hist->GetBinContent(i);
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fprintf(paraOut, "%14.8f\t%9.6f\n", x, y);
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}
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fflush(paraOut);
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fclose(paraOut);
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}
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