statsmodels.graphics.gofplots.qqline
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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? - 45-degree line
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- ?s? - standardized line, the expected order statistics are scaled by
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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
.
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