julia> a=[true,false,true,true,missing] 5-element Vector{Union{Missing, Bool}}: true false true true missing julia> mean(skipmissing(a)) 0.75 julia> length(a) 5 julia> length(skipmissing(a)) ERROR: MethodError: no method matching length(::Base.SkipMissing{Vector{Union{Missing, Bool}}}) …

Questions about missing

nilshg September 21, 2022, 7:45am 3

Or (probably more efficient)

count(!ismissing, a)

6 Likes

Topic		Replies	Views
Length(skipmissing( )) not implemented Performance	7	733	August 6, 2021
Mean and empty collection General Usage question	3	685	September 4, 2018
Fastest way to count unique elements in `Vector{Union{Bool, Missing})` Performance	35	7009	January 16, 2018
Compute mean of array where all values could be missing New to Julia	5	413	April 21, 2021
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