Re: [boost] accumulators::histogram

From: Eric Niebler (eric_at_[hidden])
Date: 2008-01-30 11:00:59

Neal Becker wrote:
> I see accumulators::density is almost what I want.  I need a histogram, but
> it want to specify in advance the number of bins and the bin size.  This is
> really a simplified accumulators::density.
> 
> I think it would be good to add this to accumulators::density.

Do these help?

tag::density::cache_size
   Number of first samples used to determine min and max.

tag::density::num_bins
  Number of bins (two additional bins collect under-
  and overflow samples).

They are named parameters that you can specify to an accumulator_set's 
constructor.

accumulator_set<double, features<tag::density> > acc(
     tag::density::cache_size = 10
     tag::density::num_bins = 20
);

HTH,

-- 
Eric Niebler
Boost Consulting
www.boost-consulting.com