DataFrame can't get filter to get rid of rows where a column contains a blank " "

[nilshg]

DataFrames is not different from base Julia, a column in a DataFrame is just a plain old Vector:

julia> x = ["a", missing, " "]
3-element Vector{Union{Missing, String}}:
 "a"
 missing
 " "

julia> replace(x, " " => missing)
3-element Vector{Union{Missing, String}}:
 "a"
 missing
 missing

would still be the same if x was a column in a DataFrame - it would just be df.x