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Allow weights in cut(x, ngroups) #209

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Allow weights in cut(x, ngroups) #209

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1 change: 1 addition & 0 deletions Project.toml
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Original file line number Diff line number Diff line change
Expand Up @@ -10,6 +10,7 @@ JSON = "682c06a0-de6a-54ab-a142-c8b1cf79cde6"
Missings = "e1d29d7a-bbdc-5cf2-9ac0-f12de2c33e28"
Printf = "de0858da-6303-5e67-8744-51eddeeeb8d7"
Reexport = "189a3867-3050-52da-a836-e630ba90ab69"
StatsBase = "2913bbd2-ae8a-5f71-8c99-4fb6c76f3a91"
Unicode = "4ec0a83e-493e-50e2-b9ac-8f72acf5a8f5"

[compat]
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8 changes: 6 additions & 2 deletions src/extras.jl
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@@ -1,4 +1,4 @@
using Compat.Statistics
import StatsBase

function fill_refs!(refs::AbstractArray, X::AbstractArray,
breaks::AbstractVector, extend::Bool, allow_missing::Bool)
Expand Down Expand Up @@ -166,7 +166,7 @@ function cut(x::AbstractArray{T, N}, breaks::AbstractVector;
end

"""
cut(x::AbstractArray, ngroups::Integer;
cut(x::AbstractArray, [w::AbstractWeights, ]ngroups::Integer;
labels::Union{AbstractVector{<:AbstractString},Function})

Cut a numeric array into `ngroups` quantiles, determined using
Expand All @@ -175,3 +175,7 @@ Cut a numeric array into `ngroups` quantiles, determined using
cut(x::AbstractArray, ngroups::Integer;
labels::Union{AbstractVector{<:AbstractString},Function}=default_formatter) =
cut(x, Statistics.quantile(x, (1:ngroups-1)/ngroups); extend=true, labels=labels)

cut(x::AbstractArray, w::AbstractWeights, ngroups::Integer;
labels::Union{AbstractVector{<:AbstractString},Function}=default_formatter) =
cut(x, StatsBase.quantile(x, w, (1:ngroups-1)/ngroups); extend=true, labels=labels)