Hi Malcolm, try "theta==25" (C/C++ convention). Cheers, Fons. On Tue, Dec 05, 2000 at 02:13:58PM +0000, Malcolm Davidson wrote: > Hello, > > I'm using the TTree Draw method for displaying histograms and was very > surprised that the following > worked: > > iem_data->Draw("shh:reps","theta <=25") // Draw all coefficients for > incidence angles le to 25 degrees > > whereas the following did not (I do have theta's = 25 in the ntuple) > > root [7] iem_data->Draw("shh:reps","theta=25") > iem_data->Draw("shh:reps","theta=25") > *ERROR 26 : > Unknown name : "theta=25" > (Int_t)(-1) > > Is this normal ? It seems to me that the equal condition is quite > important as well ? > > Many thanks in advance. > > Malcolm > > p.s. I am using root compiled on Linux Mandrake 7.2 (i386). > > <>------------------------------------------------<> > Malcolm W. J. Davidson > > Centre D'Etudes Spatiales de la Biosphere (CESBIO) > UMR 5639 CNES-CNRS-UPS > 18, Avenue Edouard Belin > F-31401 Toulouse Cedex 4 > FRANCE > > e-mail : davidson@cesbio.cnes.fr > phone (33)(0)5.61.55.85.84 > fax (33)(0)5.61.55.85.00 > <>------------------------------------------------<> > > -- Org: CERN, European Laboratory for Particle Physics. Mail: 1211 Geneve 23, Switzerland E-Mail: Fons.Rademakers@cern.ch Phone: +41 22 7679248 WWW: http://root.cern.ch/~rdm/ Fax: +41 22 7677910
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