withColumnsDropped method

DataFrame withColumnsDropped(Iterable<String> columnNames)

A new data frame without the selected columns.

Example:

print(iris.withHead(3));
print(iris.withHead(3).withColumnsDropped(["petal_length", "species"]));

.--.------------.-----------.------------.-----------.--------.
|id|sepal_length|sepal_width|petal_length|petal_width|species |
:--+------------+-----------+------------+-----------+--------:
|1 |5.1         |3.5        |1.4         |0.2        |setosa  |
|2 |4.9         |3.0        |1.4         |0.2        |setosa  |
|3 |4.7         |3.2        |1.3         |0.2        |setosa  |
'--'------------'-----------'------------'-----------'--------'

.--.------------.-----------.-----------.
|id|sepal_length|sepal_width|petal_width|
:--+------------+-----------+-----------:
|1 |5.1         |3.5        |0.2        |
|2 |4.9         |3.0        |0.2        |
|3 |4.7         |3.2        |0.2        |
'--'------------'-----------'-----------'

Implementation

DataFrame withColumnsDropped(Iterable<String> columnNames) => withColumns([
      ...numericColumns.keys
          .where((columnName) => !columnNames.contains(columnName)),
      ...categoricColumns.keys
          .where((columnName) => !columnNames.contains(columnName))
    ]);