[Rivet] compare-histos with multiple analysis and multiple MC data sets

[Eike von Seggern]

On Thu, Aug 27, 2009 at 12:58 +0100, Andy Buckley wrote:

[...]

> 
> > BTW: aida2flat exits with an error if more than one aida file is given.
> 
> That shouldn't be the case. Can you post the error that you get?

Okay, the command is:
CURRENT/TRUNK/bin/aida2flat PATH/TO/DELPHI_2002_069_CONF_603.aida \
    PATH/TO/BABAR_2006_S6511112.aida

And the error I get:
Traceback (most recent call last):
  File "projects/rivet/trunk/bin/aida2flat", line 313, in <module>
    out.write("\n\n".join([h.asFlat() for h in sorted(histos)]))
ValueError: I/O operation on closed file

Is now looked at it a bit closer and commenting out the last 2 lines
(closing stdout) resolved the problem. (I don't think that I can submit,
so one of you guys has to do the hard work)

Sorry for the commotion :)

Best
    eike