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Overview of matplotlib.pyplot

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* TOC {:toc}

The goal

There a lot of functions in matplotlib.pyplot. Here I list the more important ones.

Questions to David Rotermund

pylab is a historic interface and its use is strongly discouraged. The equivalent replacement is matplotlib.pyplot

axes Add an Axes to the current figure and make it the current Axes.
cla Clear the current axes.
clf Clear the current figure.
close Close a figure window.
delaxes Remove an Axes (defaulting to the current axes) from its figure.
fignum_exists Return whether the figure with the given id exists.
figure Create a new figure, or activate an existing figure.
gca Get the current Axes.
gcf Get the current figure.
get_figlabels Return a list of existing figure labels.
get_fignums Return a list of existing figure numbers.
sca Set the current Axes to ax and the current Figure to the parent of ax.
subplot Add an Axes to the current figure or retrieve an existing Axes.
subplot2grid Create a subplot at a specific location inside a regular grid.
subplot_mosaic Build a layout of Axes based on ASCII art or nested lists.
subplots Create a figure and a set of subplots.
twinx Make and return a second axes that shares the x-axis.
twiny Make and return a second axes that shares the y-axis.

more Basic

plot Plot y versus x as lines and/or markers.
errorbar Plot y versus x as lines and/or markers with attached errorbars.
scatter A scatter plot of y vs.
step Make a step plot.
loglog Make a plot with log scaling on both the x- and y-axis.
semilogx Make a plot with log scaling on the x-axis.
semilogy Make a plot with log scaling on the y-axis.
bar Make a bar plot.
barh Make a horizontal bar plot.
bar_label Label a bar plot.
pie Plot a pie chart.
vlines Plot vertical lines at each x from ymin to ymax.
hlines Plot horizontal lines at each y from xmin to xmax.
fill Plot filled polygons.
polar Make a polar plot.

Spans

Spectral

more Binned

hist Compute and plot a histogram.
hist2d Make a 2D histogram plot.
clabel Label a contour plot.
contour Plot contour lines.
contourf Plot filled contours.

more 2D arrays

imshow Display data as an image, i.e., on a 2D regular raster.

Unstructured triangles

annotate Annotate the point xy with text text.
text Add text to the Axes.
figtext Add text to figure.
table Add a table to an Axes.
arrow Add an arrow to the Axes.
figlegend Place a legend on the figure.
legend Place a legend on the Axes.

Vector fields

autoscale Autoscale the axis view to the data (toggle).
axis Convenience method to get or set some axis properties.
box Turn the axes box on or off on the current axes.
grid Configure the grid lines.
locator_params Control behavior of major tick locators.
minorticks_off Remove minor ticks from the Axes.
minorticks_on Display minor ticks on the Axes.
rgrids Get or set the radial gridlines on the current polar plot.
thetagrids Get or set the theta gridlines on the current polar plot.
tick_params Change the appearance of ticks, tick labels, and gridlines.
ticklabel_format Configure the ScalarFormatter used by default for linear Axes.
xlabel Set the label for the x-axis.
xlim Get or set the x limits of the current axes.
xscale Set the xaxis' scale.
xticks Get or set the current tick locations and labels of the x-axis.
ylabel Set the label for the y-axis.
ylim Get or set the y-limits of the current axes.
yscale Set the yaxis' scale.
yticks Get or set the current tick locations and labels of the y-axis.
title Set a title for the Axes.

more Layout

margins Set or retrieve autoscaling margins.
subplots_adjust Adjust the subplot layout parameters.
tight_layout Adjust the padding between and around subplots.

more Colormapping

clim Set the color limits of the current image.
colorbar Add a colorbar to a plot.
sci Set the current image.
get_cmap Get a colormap instance, defaulting to rc values if name is None.
set_cmap Set the default colormap, and applies it to the current image if any.
imread Read an image from a file into an array.
imsave Colormap and save an array as an image file.

more Configuration

rc Set the current rcParams. group is the grouping for the rc, e.g., for lines.linewidth the group is lines, for axes.facecolor, the group is axes, and so on. Group may also be a list or tuple of group names, e.g., (xtick, ytick). kwargs is a dictionary attribute name/value pairs, e.g.,::.
rcdefaults Restore the rcParams from Matplotlib's internal default style.

more Output

draw Redraw the current figure.
ioff Disable interactive mode.
ion Enable interactive mode.
pause Run the GUI event loop for interval seconds.
savefig Save the current figure.
show Display all open figures.

more Other

waitforbuttonpress Blocking call to interact with the figure.