seaborn.scatterplot
seaborn.scatterplot(x=None, y=None, hue=None, style=None, size=None, data=None, palette=None, hue_order=None, hue_norm=None, sizes=None, size_order=None, size_norm=None, markers=True, style_order=None, x_bins=None, y_bins=None, units=None, estimator=None, ci=95, n_boot=1000, alpha='auto', x_jitter=None, y_jitter=None, legend='brief', ax=None, **kwargs)
Draw a scatter plot with possibility of several semantic groupings.
The relationship between x
and y
can be shown for different subsets of the data using the hue
, size
, and style
parameters. These parameters control what visual semantics are used to identify the different subsets. It is possible to show up to three dimensions independently by using all three semantic types, but this style of plot can be hard to interpret and is often ineffective. Using redundant semantics (i.e. both hue
and style
for the same variable) can be helpful for making graphics more accessible.
See the color_palette()
, or a dictionary mapping hue levels to matplotlib colors.
hue_order
:list, optional
Specified order for the appearance of the
hue
variable levels, otherwise they are determined from the data. Not relevant when thehue
variable is numeric.
hue_norm
:tuple or Normalize object, optional
Normalization in data units for colormap applied to the
hue
variable when it is numeric. Not relevant if it is categorical.
sizes
:list, dict, or tuple, optional
An object that determines how sizes are chosen when
size
is used. It can always be a list of size values or a dict mapping levels of thesize
variable to sizes. Whensize
is numeric, it can also be a tuple specifying the minimum and maximum size to use such that other values are normalized within this range.
size_order
:list, optional
Specified order for appearance of the
size
variable levels, otherwise they are determined from the data. Not relevant when thesize
variable is numeric.
size_norm
:tuple or Normalize object, optional
Normalization in data units for scaling plot objects when the
size
variable is numeric.
markers
:boolean, list, or dictionary, optional
Object determining how to draw the markers for different levels of the
style
variable. Setting toTrue
will use default markers, or you can pass a list of markers or a dictionary mapping levels of thestyle
variable to markers. Setting toFalse
will draw marker-less lines. Markers are specified as in matplotlib.
style_order
:list, optional
Specified order for appearance of the
style
variable levels otherwise they are determined from the data. Not relevant when thestyle
variable is numeric.
{x,y}_bins
:lists or arrays or functions
Currently non-functional.
units
:{long_form_var}
Grouping variable identifying sampling units. When used, a separate line will be drawn for each unit with appropriate semantics, but no legend entry will be added. Useful for showing distribution of experimental replicates when exact identities are not needed.
Currently non-functional.
estimator
:name of pandas method or callable or None, optional
Method for aggregating across multiple observations of the
y
variable at the samex
level. IfNone
, all observations will be drawn. Currently non-functional.
ci
:int or “sd” or None, optional
Size of the confidence interval to draw when aggregating with an estimator. “sd” means to draw the standard deviation of the data. Setting to
None
will skip bootstrapping. Currently non-functional.
n_boot
:int, optional
Number of bootstraps to use for computing the confidence interval. Currently non-functional.
alpha
:float
Proportional opacity of the points.
{x,y}_jitter
:booleans or floats
Currently non-functional.
legend
:“brief”, “full”, or False, optional
How to draw the legend. If “brief”, numeric
hue
andsize
variables will be represented with a sample of evenly spaced values. If “full”, every group will get an entry in the legend. IfFalse
, no legend data is added and no legend is drawn.
ax
:matplotlib Axes, optional
Axes object to draw the plot onto, otherwise uses the current Axes.
kwargs
:key, value mappings
Other keyword arguments are passed down to
plt.scatter
at draw time.
返回值:ax
:matplotlib Axes
Returns the Axes object with the plot drawn onto it.
See also
Show the relationship between two variables connected with lines to emphasize continuity.Draw a scatter plot with one categorical variable, arranging the points to show the distribution of values.
Examples
Draw a simple scatter plot between two variables:
>>> import seaborn as sns; sns.set()
>>> import matplotlib.pyplot as plt
>>> tips = sns.load_dataset("tips")
>>> ax = sns.scatterplot(x="total_bill", y="tip", data=tips)
Group by another variable and show the groups with different colors:
>>> ax = sns.scatterplot(x="total_bill", y="tip", hue="time",
... data=tips)
Show the grouping variable by varying both color and marker:
>>> ax = sns.scatterplot(x="total_bill", y="tip",
... hue="time", style="time", data=tips)
Vary colors and markers to show two different grouping variables:
>>> ax = sns.scatterplot(x="total_bill", y="tip",
... hue="day", style="time", data=tips)
Show a quantitative variable by varying the size of the points:
>>> ax = sns.scatterplot(x="total_bill", y="tip", size="size",
... data=tips)
Also show the quantitative variable by also using continuous colors:
>>> ax = sns.scatterplot(x="total_bill", y="tip",
... hue="size", size="size",
... data=tips)
Use a different continuous color map:
>>> cmap = sns.cubehelix_palette(dark=.3, light=.8, as_cmap=True)
>>> ax = sns.scatterplot(x="total_bill", y="tip",
... hue="size", size="size",
... palette=cmap,
... data=tips)
Change the minimum and maximum point size and show all sizes in legend:
>>> cmap = sns.cubehelix_palette(dark=.3, light=.8, as_cmap=True)
>>> ax = sns.scatterplot(x="total_bill", y="tip",
... hue="size", size="size",
... sizes=(20, 200), palette=cmap,
... legend="full", data=tips)
Use a narrower range of color map intensities:
>>> cmap = sns.cubehelix_palette(dark=.3, light=.8, as_cmap=True)
>>> ax = sns.scatterplot(x="total_bill", y="tip",
... hue="size", size="size",
... sizes=(20, 200), hue_norm=(0, 7),
... legend="full", data=tips)
Vary the size with a categorical variable, and use a different palette:
>>> cmap = sns.cubehelix_palette(dark=.3, light=.8, as_cmap=True)
>>> ax = sns.scatterplot(x="total_bill", y="tip",
... hue="day", size="smoker",
... palette="Set2",
... data=tips)
Use a specific set of markers:
>>> markers = {"Lunch": "s", "Dinner": "X"}
>>> ax = sns.scatterplot(x="total_bill", y="tip", style="time",
... markers=markers,
... data=tips)
Control plot attributes using matplotlib parameters:
>>> ax = sns.scatterplot(x="total_bill", y="tip",
... s=100, color=".2", marker="+",
... data=tips)
Pass data vectors instead of names in a data frame:
>>> iris = sns.load_dataset("iris")
>>> ax = sns.scatterplot(x=iris.sepal_length, y=iris.sepal_width,
... hue=iris.species, style=iris.species)
Pass a wide-form dataset and plot against its index:
>>> import numpy as np, pandas as pd; plt.close("all")
>>> index = pd.date_range("1 1 2000", periods=100,
... freq="m", name="date")
>>> data = np.random.randn(100, 4).cumsum(axis=0)
>>> wide_df = pd.DataFrame(data, index, ["a", "b", "c", "d"])
>>> ax = sns.scatterplot(data=wide_df)