Re: Histogram splitting and TSpectrum::Background

Hi Rene,

> Anyhow, TSpectrum::Background evaluates the background only the defined
> range
> of the input histogram. Simply do
> h->GetXaxis()->SetRange(binmin,binmax);
> TSpectrum s;
> TH1 *hback = s.Background(h);

thanks for your help. But as of now the problem i'm facing is how to define that range automatically; this is because i have to analyze a lot of spectra of that type and everyone has different ranges of signals. Some spectra also have more that one gap, as the one i'm attaching (now i hope...)

best regards,
Marco