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Table.select_blank_columns

select_blank_columnswhen treat_nans_as_blank

Group: Selections
Aliases: select_blank_fields, select_missing_columns, select_na

Documentation​

Selects columns which are either all blank or contain blank values. If no rows are present, all columns are considered blank.

Arguments​

  • when: specifies whether to remove is all cells are blank or if any ones are chosen. By default, only columns consisting of all blank cells are selected.
  • treat_nans_as_blank: specified whether Number.nan is considered as blank. By default, it is not.

Returns​

  • A new table of the blank columns.

Examples​

Select completely blank columns from a table.​

table = Table.from_rows ["bar","foo","buzz","bizz"] [["John", 25,"abc",""]] output = table.select_blank_columns

Returns a Table​

      | bar  | foo | buzz |
      |------|-----|------|
      | John | 25  | abc  |

Errors​

  • If there are no columns in the output table, a No_Output_Columns is raised as an error regardless of the problem behavior, because it is not possible to create a table without any columns.

Remarks​

What is a blank value?​

Blank values are Nothing, "" and depending on setting Number.nan.