Skip to content

Faster computation of quantiles in describe #2909

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
merged 2 commits into from
Oct 16, 2021
+18 −5
Merged

Faster computation of quantiles in describe #2909

Changes from 1 commit
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
528d8a4
Faster computation of quantiles in `describe`
nalimilan Oct 15, 2021
c9c249b
More general approach
nalimilan Oct 15, 2021
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
18 changes: 13 additions & 5 deletions src/abstractdataframe/abstractdataframe.jl
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -702,11 +702,19 @@ function get_stats(@nospecialize(col::Union{AbstractVector, Base.SkipMissing}),
stats::AbstractVector{Symbol})
d = Dict{Symbol, Any}()

if :q25 in stats || :median in stats || :q75 in stats
q = try quantile(col, [.25, .5, .75]) catch; (nothing, nothing, nothing) end
d[:q25] = q[1]
d[:median] = q[2]
d[:q75] = q[3]
if eltype(col) <: Union{Missing, AbstractString}
d[:q25] = d[:median] = d[:q75] = nothing
elseif :q25 in stats || :median in stats || :q75 in stats
mcol = Base.copymutable(col)
if :q25 in stats
d[:q25] = try quantile!(mcol, 0.25) catch; nothing; end
end
if :median in stats
d[:median] = try quantile!(mcol, 0.50) catch; nothing; end
end
if :q75 in stats
d[:q75] = try quantile!(mcol, 0.75) catch; nothing; end
end
end

if :min in stats || :max in stats
Expand Down