Daer Roottalk,
I have a TF2 that I evaluate with several different sets of parameters
within a macro. I would like to write to a root file a histogram of this
function for each of these parameter sets, in order to read them in and
plot them in a different macro. Plotting them within the original macro
can be done via TF2::DrawCopy. How do I address these histograms in
order to write them out?
I naively tried to shortcircuit the hitsogramming by trying to use the
Write method on my TF2, i.e.
TF2 *f2 = new TF2 (.....)
....
f2->Write();
f2 is written to the root file, but when I open the file and do
f2->Draw(), the resulting histogram is empty. (This technique works for
TF1, by the way, in contrast to TF2.)
Thanks,
Peter Jacobs,
LBNL
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