Re: [Boost-bugs] [Boost C++ Libraries] #7150: What effect does the mean tag have on variance

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #7150: What effect does the mean tag have on variance
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2012-07-19 02:21:58

#7150: What effect does the mean tag have on variance
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  Reporter:  colmearley@…          |       Owner:  eric_niebler
      Type:  Support Requests      |      Status:  reopened    
 Milestone:  To Be Determined      |   Component:  accumulator 
   Version:  Boost 1.49.0          |    Severity:  Problem     
Resolution:                        |    Keywords:              
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Changes (by Colm Earley <colmearley@…>):

  * status:  closed => reopened
  * resolution:  invalid =>

Comment:

 Thanks Eric.
 Does this mean that accumulators can only calculate one value at a time?
 Say I wanted to calculate mean, variance and kurtosis, would I need
 separate accumulators to avoid overwriting the dependencies?

 This is what I initially expected to work:
 typedef accumulator_set<double, stats<tag::mean, tag::variance,
 tag::kurtosis> > stats;

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/7150#comment:2>
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