TTree::Draw and variable bin histograms

From: Suvayu Ali <fatkasuvayu_at_gmail.com>
Date: Sat, 4 Sep 2010 12:39:06 -0700


Hi everyone,

I wanted to use TTree::Draw() to make histograms with variable bins. When I declare separate histograms for different Draw commands, I get what I'm trying to achieve.

But when I try to reuse one histogram, subsequent Draw commands don't respect the original variable binning and draws with a default linear binning with a 100 bins.

How can I achieve this?

PS: I need to reuse the histogram as my real use case is in a macro where a method loops over multiple TNtuples in a root file and gives me histograms one after another, which I put on a stack.

-- 
Suvayu

Open source is the future. It sets us free.

Received on Sat Sep 04 2010 - 21:39:28 CEST

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