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