seaborn.distplot

seaborn.distplot(a, bins=None, hist=True, kde=True, rug=False, fit=None, hist_kws=None, kde_kws=None, rug_kws=None, fit_kws=None, color=None, vertical=False, norm_hist=False, axlabel=None, label=None, ax=None)

Flexibly plot a univariate distribution of observations.

This function combines the matplotlib hist function (with automatic calculation of a good default bin size) with the seaborn kdeplot() and rugplot() functions. It can also fit scipy.stats distributions and plot the estimated PDF over the data.

Parameters:

a : Series, 1d-array, or list.

Observed data. If this is a Series object with a name attribute, the name will be used to label the data axis.

bins : argument for matplotlib hist(), or None, optional

Specification of hist bins, or None to use Freedman-Diaconis rule.

hist : bool, optional

Whether to plot a (normed) histogram.

kde : bool, optional

Whether to plot a gaussian kernel density estimate.

rug : bool, optional

Whether to draw a rugplot on the support axis.

fit : random variable object, optional

An object with fit method, returning a tuple that can be passed to a pdf method a positional arguments following an grid of values to evaluate the pdf on.

{hist, kde, rug, fit}_kws : dictionaries, optional

Keyword arguments for underlying plotting functions.

color : matplotlib color, optional

Color to plot everything but the fitted curve in.

vertical : bool, optional

If True, oberved values are on y-axis.

norm_hist : bool, optional

If True, the histogram height shows a density rather than a count. This is implied if a KDE or fitted density is plotted.

axlabel : string, False, or None, optional

Name for the support axis label. If None, will try to get it from a.namel if False, do not set a label.

label : string, optional

Legend label for the relevent component of the plot

ax : matplotlib axis, optional

if provided, plot on this axis

Returns:

ax : matplotlib Axes

Returns the Axes object with the plot for further tweaking.

See also

kdeplot
Show a univariate or bivariate distribution with a kernel density estimate.
rugplot
Draw small vertical lines to show each observation in a distribution.

Examples

Show a default plot with a kernel density estimate and histogram with bin size determined automatically with a reference rule:

>>> import seaborn as sns, numpy as np
>>> sns.set(); np.random.seed(0)
>>> x = np.random.randn(100)
>>> ax = sns.distplot(x)
../_images/seaborn-distplot-1.png

Use Pandas objects to get an informative axis label:

>>> import pandas as pd
>>> x = pd.Series(x, name="x variable")
>>> ax = sns.distplot(x)
../_images/seaborn-distplot-2.png

Plot the distribution with a kenel density estimate and rug plot:

>>> ax = sns.distplot(x, rug=True, hist=False)
../_images/seaborn-distplot-3.png

Plot the distribution with a histogram and maximum likelihood gaussian distribution fit:

>>> from scipy.stats import norm
>>> ax = sns.distplot(x, fit=norm, kde=False)
../_images/seaborn-distplot-4.png

Plot the distribution on the vertical axis:

>>> ax = sns.distplot(x, vertical=True)
../_images/seaborn-distplot-5.png

Change the color of all the plot elements:

>>> sns.set_color_codes()
>>> ax = sns.distplot(x, color="y")
../_images/seaborn-distplot-6.png

Pass specific parameters to the underlying plot functions:

>>> ax = sns.distplot(x, rug=True, rug_kws={"color": "g"},
...                   kde_kws={"color": "k", "lw": 3, "label": "KDE"},
...                   hist_kws={"histtype": "step", "linewidth": 3,
...                             "alpha": 1, "color": "g"})
../_images/seaborn-distplot-7.png