statsmodels.graphics.gofplots.qqline¶

statsmodels.graphics.gofplots.
qqline
(ax, line, x=None, y=None, dist=None, fmt='r')[source]¶ Plot a reference line for a qqplot.
Parameters:  ax (matplotlib axes instance) – The axes on which to plot the line
 line (str {'45','r','s','q'}) –
Options for the reference line to which the data is compared.:
 ‘45’  45degree line
 ’s‘  standardized line, the expected order statistics are scaled by
 the standard deviation of the given sample and have the mean added to them
 ’r’  A regression line is fit
 ’q’  A line is fit through the quartiles.
 None  By default no reference line is added to the plot.
 x (array) – X data for plot. Not needed if line is ‘45’.
 y (array) – Y data for plot. Not needed if line is ‘45’.
 dist (scipy.stats.distribution) – A scipy.stats distribution, needed if line is ‘q’.
Notes
There is no return value. The line is plotted on the given ax.