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Add correction for correlations

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This commit is contained in:
Michael K. Borregaard 2017-09-05 15:40:11 +02:00
parent d6e5b57a08
commit cd9f00300c
1 changed files with 3 additions and 2 deletions
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src/recipes.jl
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@ -505,9 +505,10 @@ function _auto_binning_nbins{N}(vs::NTuple{N,AbstractVector}, dim::Integer; mode
_span(v) = ignorenan_maximum(v) - ignorenan_minimum(v)
n_samples = length(linearindices(first(vs)))
# Estimator for number of samples in one row/column of bins along each axis:
nd = n_samples^(1/(2+N))
# The nd estimator is the key to most automatic binning methods, and is modified for twodimensional histograms to include correlation
nd = n_samples^(1/(2+N))
nd = N == 2 ? nd / (1-cor(first(vs), last(vs))^2)^(3//8) : nd # the >2-dimensional case does not have a nice solution to correlations
v = vs[dim]