eland.DataFrame.query

DataFrame.query(expr) → eland.dataframe.DataFrame

Query the columns of a DataFrame with a boolean expression.

TODO - add additional pandas arguments

Parameters

expr: str

A boolean expression

Returns

eland.DataFrame:

DataFrame populated by results of the query

TODO - add link to eland user guide

See also

pandas.DataFrame.query

Pandas User Guide/indexing

Examples

>>> df = ed.DataFrame('localhost', 'flights')
>>> df.shape
(13059, 27)
>>> df.query('FlightDelayMin > 60').shape
(2730, 27)

eland.DataFrame.get eland.DataFrame.sample