6.8.2.1.6. statsmodels.sandbox.stats.contrast_tools.dummy_1d¶
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statsmodels.sandbox.stats.contrast_tools.
dummy_1d
(x, varname=None)[source]¶ dummy variable for id integer groups
Returns: dummy : ndarray, 2d
array of dummy variables, one column for each level of the category (full set)
labels : list of strings
labels for the columns, i.e. levels of each category
See also
statsmodels.tools.categorical
Notes
use tools.categorical instead for more more options
Examples
>>> x = np.array(['F', 'F', 'M', 'M', 'F', 'F', 'M', 'M', 'F', 'F', 'M', 'M'], dtype='|S1') >>> dummy_1d(x, varname='gender') (array([[1, 0], [1, 0], [0, 1], [0, 1], [1, 0], [1, 0], [0, 1], [0, 1], [1, 0], [1, 0], [0, 1], [0, 1]]), ['gender_F', 'gender_M'])