[Rivet] Two-dimensional histograms

[Andy Buckley]

Holger Schulz wrote:
> Hi,
> 
> do we have two-dimensional histograms in Rivet?
> I  need them for data storage reasons only.
> I want to fill a profile histo with its contents.

Afraid not! You might have to roll your own from vector<vector<double> > 
or similar... if you do so, please put an e.g. "/// @todo Replace with 
proper 2D histo" comment in the code so we know to clean it up later. Of 
course, if you fancy implementing a 2D histo in YODA... ;)

Andy