[ROOT] Problem with TH3::Project3D ?

From: Abelardo Moralejo (abelardo.moralejo@pd.infn.it)
Date: Mon Sep 15 2003 - 11:56:25 MEST


Hi,

I have just started using root 3.05.07 on Linux RH 7.2. I have a TH3F
object which I fill from a tree, and then want to make xy slices for
different z values. With root 3.02.07 I did:

(where mov is the pointer to the TH3F object and i the slice I want to
extract)

mov->GetZaxis()->SetRange(i,i);
TH2D* ground = (TH2D*) mov->Project3D("yx");

With version 3.05.07 this does not seem to work, since the second
instruction results in a projection of all the zbins of the TH3F
histogram (not just bin i). But if I simply do mov->Draw(), only the "i"
slice is drawn, as it should be.

Anyone has had any problem and know how to solve it?

Thanks in advance, and best regards,

A. Moralejo.

---
**********************************************
*  Abelardo Moralejo Olaizola                *
*   Dipartimento di Fisica Galileo Galilei   *
*   e INFN, sezione di Padova.               *
*  Via Marzolo, 8. PADOVA 35131              *
**********************************************



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