want to mydir->Get("BF/B")

From: Dr. John Krane <jkrane_at_netzero.com>
Date: Wed, 23 Aug 2006 11:20:21 -0500


Hi Rooters,

I have a funny histogram name, resulting from a funny stock ticker. The ticker, like IBM, DELL, INTC, etc., has a special character in it. The ticker name is "BF/B". So I have histogram names like "BF/B_price" that I need to retrieve from file.

I have no trouble creating histograms named "BF/B_price", and I have no trouble using the method:

mydir->FindObjectAny("BF/B");

BUT...now I have having the same problem with my code that I first complained about here:

http://root.cern.ch/root/roottalk/roottalk06/0740.html

...for some reason the FindObjectAny method is failing for me, whereas the code had *usually* worked in the past. Indeed, the same code snippets work in other executables, but not in the one I'm trying to use today. (Sigh.)

So I went with the fix described in the link above: use the Get method instead of the FindObjectAny method. This works great for all my histograms except the special one. I get:

     TH1D *t=gDirectory->Get("BF/B_price"); Error in <TFile::cd>: Unknown directory BF

So, I am looking for a way to Get this histogram. Is there a wildcard or escape character I can use to avoid the interpretation of this symbol as a directory? Any other ideas?

-- 

Dr. John Krane
http://jkrane.home.comcast.net

Quantitative Financial Analyst
Received on Wed Aug 23 2006 - 18:20:29 MEST

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