statsmodels.stats.outliers_influence.GLMInfluence.plot_index

GLMInfluence.plot_index(y_var='cooks', threshold=None, title=None, ax=None, idx=None, **kwds)

index plot for influence attributes

Parameters:

• y_var (str) – Name of attribute or shortcut for predefined attributes that will be plotted on the y-axis.

• threshold (None or float) – Threshold for adding annotation with observation labels. Observations for which the absolute value of the y_var is larger than the threshold will be annotated. Set to a negative number to label all observations or to a large number to have no annotation.

• title (str) – If provided, the title will replace the default “Index Plot” title.

• ax (matplolib axis instance) – The plot will be added to the ax if provided, otherwise a new figure is created.

• idx ({None, int}) – Some attributes require an additional index to select the y-var. In dfbetas this refers to the column indes.

• kwds (optional keywords) – Keywords will be used in the call to matplotlib scatter function.