How do I update a Matplotlib plot?

You essentially have two options:

  1. Do exactly what you’re currently doing, but call graph1. clear() and graph2.
  2. Instead of replotting, you can just update the data of the plot objects. You’ll need to make some changes in your code, but this should be much, much faster than replotting things every time.

How do I reset my Matplotlib plot?

Using the following methods, we can clear the memory occupied by Matplotlib plots.

  1. figure() – Create a new figure or activate an existing figure.
  2. figure(). close() – Close a figure window.
  3. figure(). clear() – It is the same as clf.
  4. cla() – Clear the current axes.
  5. clf() – Clear the current figure.

How do you update a dynamic plot in Matplotlib?

Dynamically updating plot in matplotlib

  1. Clear the plot and re-draw the plot with all the points again.
  2. Animate the plot by changing it after a particular interval.

How do you overwrite a plot in Python?


  1. plt.hold(True) will set the figure to add new data rather than overwrite.
  2. plt.hold(False) will set the figure to overwrite the existing data.
  3. plt. hold() will switch back and forth, but this requires that you know the current state so I prefer explictly using True and False .

How do I plot multiple plots in matplotlib?

In Matplotlib, we can draw multiple graphs in a single plot in two ways. One is by using subplot() function and other by superimposition of second graph on the first i.e, all graphs will appear on the same plot.

How do I install the latest version of matplotlib?

How to install matplotlib in Python?

  1. Step 1 − Make sure Python and pip is preinstalled on your system. Type the following commands in the command prompt to check is python and pip is installed on your system.
  2. Step 2 − Install Matplotlib. Matplotlib can be installed using pip.
  3. Step 3 − Check if it is installed successfully.

How do you clear a plot?

There are two methods available for this purpose:

  1. clf() | class: matplotlib. pyplot. clf(). Used to clear the current Figure’s state without closing it.
  2. cla() | class: matplotlib. pyplot. cla(). Used to clear the current Axes state without closing it.

How do you plot a dynamic graph in Python?

Dynamic plotting with matplotlib

  1. import matplotlib.pyplot as plt.
  2. import time.
  3. import random.
  4. ysample = random.sample(xrange( – 50 , 50 ), 100 )
  5. xdata = []
  6. ydata = []
  8. axes = plt.gca()

How do I close a matplotlib plot?

matplotlib. pyplot. close

  1. close() by itself closes the current figure.
  2. close(h) where h is a Figure instance, closes that figure.
  3. close(num) closes figure number num.
  4. close(name) where name is a string, closes figure with that label.
  5. close(‘all’) closes all the figure windows.

How do I change the default plot size?

Change Matplotlib Plot Size

  1. Set the figsize in figure() Methods to Set Matplotlib Plot Size.
  2. Set rcParams to Change Matplotlib Plot Size.
  3. set_figheight() Along With set_figwidth() to Set Matplotlib Plot Size.
  4. set_size_inches() Method to Change the Matplotlib Figure Size.
  5. Change Figure Format in Matplotlib.

How to update a plot in Matplotlib?

Updating a plot simply means plotting the data, then clearing the existing plot, and then again plotting the updated data and all these steps are performed in a loop. canvas.draw (): It is used to update a figure that has been changed. It will redraw the current figure.

How to refresh Matplotlib plot in a Tkinter?

I would like to create a program that executes a long list of commands after a set of data is imported by clicking a button. One of these commands would be to display the spectral data on a graph within the same window. Here is what I have so far: Thanks for contributing an answer to Stack Overflow! Please be sure to answer the question.

How to remove a subplot in Matplotlib?

Since this subplot will overlap the # first, the plot (and its axes) previously created, will be removed plt.subplot(211) If you do not want this behavior, use the Figure.add_subplot method or the pyplot.axes function instead.

Which is the returned base class in Matplotlib?

The returned axes base class depends on the projection used. It is Axes if rectilinear projection is used and projections.polar.PolarAxes if polar projection is used. The returned axes is then a subplot subclass of the base class. This method also takes the keyword arguments for the returned axes base class; except for the figure argument.