VertexFrame covariance¶

covariance(self, data_column_names)¶

Calculate covariance for exactly two columns.

Parameters:

Parameters:	data_column_names : list The names of two columns from which to compute the covariance.
Returns:	: dict Covariance of the two columns.

data_column_names : list

The names of two columns from which to compute the covariance.

Returns:

: dict

Covariance of the two columns.

This method applies only to columns containing numerical data.

Examples

Consider Frame my_frame, which accesses a frame that contains a single column named obs:

>>> cov = my_frame.covariance(['col_0', 'col_1'])
>>> print(cov)