[ROOT] Fill vector to histogram

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Hi, Rooters:

I am a new rooter, I have one simple questions. For example, I have a simple
data file, which includes one column of data. In PAW, I can read this data
file to one vector, then fill this vector to one hisgram by command hfill.

vec/read a a.dat
hfill a 1
h/pl 1

Now in ROOT, how can I implement this simple task. Thank you very much.

Regards,

Hucheng
-----------------------------------------------------------------
 ------------------------------   Hucheng CHEN
     _/_/_/_/   _/    _/   _/     Omega Group
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--------------------------------  Tel: 631-344-3468
 Home Phone: 631-344-1210         Fax: 631-344-5568
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