Hello, If I have a DataFrame that for example is 91 rows 3 columns, and I would like to add a 4th column to it which measures the length of the data found in column 3. How can I apply this over each row please. The following gives me 91 in each row, which isn’t what I’m looking for. df[:colName] …

Dataframe : Length of column

nilshg January 17, 2019, 1:01pm 3

Why not broadcast length directly?

df[:col_3_length] = length.(df.col_3)

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