statsmodels.graphics.gofplots.ProbPlot.ppplot

method

ProbPlot.ppplot(xlabel=None, ylabel=None, line=None, other=None, ax=None, **plotkwargs)

P-P plot of the percentiles (probabilities) of x versus the probabilities (percetiles) of a distribution.

Parameters

xlabelstr or None, optional

User-provided lables for the x-axis. If None (default), other values are used depending on the status of the kwarg other.

ylabelstr or None, optional

User-provided lables for the y-axis. If None (default), other values are used depending on the status of the kwarg other.

linestr {‘45’, ‘s’, ‘r’, q’} or None, optional

Options for the reference line to which the data is compared:

• ‘45’: 45-degree 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.

otherProbPlot, array-like, or None, optional

If provided, ECDF(x) will be plotted against p(x) where x are sorted samples from self. ECDF is an empirical cumulative distribution function estimated from other and p(x) = 0.5/n, 1.5/n, …, (n-0.5)/n where n is the number of samples in self. If an array-object is provided, it will be turned into a ProbPlot instance default parameters. If not provided (default), self.dist(x) is be plotted against p(x).

axMatplotlib AxesSubplot instance, optional

If given, this subplot is used to plot in instead of a new figure being created.

**plotkwargsadditional matplotlib arguments to be passed to the

plot command.

Returns

figMatplotlib figure instance

If ax is None, the created figure. Otherwise the figure to which ax is connected.