How can I logarithmic axes with matplotlib in python

0 votes

I want to plot a graph with one logarithmic axis using matplotlib.

I've been reading the docs, but can't figure out the syntax. I know that it's probably something simple like 'scale=linear' in the plot arguments, but I can't seem to get it right

Sample program:

import pylab
import matplotlib.pyplot as plt
a = [pow(10, i) for i in range(10)]
fig = plt.figure()
ax = fig.add_subplot(2, 1, 1)

line, = ax.plot(a, color='blue', lw=2)
pylab.show()
Oct 15, 2018 in Python by aryya
• 7,460 points
2,249 views

1 answer to this question.

0 votes

You can use the Axes.set_yscale method. That allows you to change the scale after the Axesobject is created. That would also allow you to build a control to let the user pick the scale if you needed to.

The relevant line to add is:

ax.set_yscale('log')

You can use 'linear' to switch back to a linear scale. Here's what your code would look like:

import pylab
import matplotlib.pyplot as plt
a = [pow(10, i) for i in range(10)]
fig = plt.figure()
ax = fig.add_subplot(2, 1, 1)

line, = ax.plot(a, color='blue', lw=2)

ax.set_yscale('log')

pylab.show()
answered Oct 15, 2018 by charlie_brown
• 7,720 points

Related Questions In Python

0 votes
1 answer

How can I lookup hostname using the IP address with a timeout in Python?

Good question. I actually was stuck with ...READ MORE

answered Feb 6, 2019 in Python by Nymeria
• 3,560 points
2,454 views
0 votes
1 answer

How can I deal with python eggs for multiple platforms in one location?

Try virtualenv : http://pypi.python.org/pypi/virtualenv This helps you create isolated ...READ MORE

answered May 28, 2019 in Python by SDeb
• 13,300 points
867 views
0 votes
1 answer

I want to download a file from the website by web scraping. Can anyone explain how to do this in jupyter lab (python) with an example?

Hey, Web scraping is a technique to automatically ...READ MORE

answered Apr 7, 2020 in Python by Gitika
• 65,890 points
2,327 views
0 votes
1 answer

How can I open multiple files using “with open” in Python?

Hello, Just replace and with , and you're done: try: ...READ MORE

answered Nov 20, 2020 in Python by Niroj
• 82,880 points
1,470 views
0 votes
2 answers
+1 vote
2 answers

how can i count the items in a list?

Syntax :            list. count(value) Code: colors = ['red', 'green', ...READ MORE

answered Jul 7, 2019 in Python by Neha
• 330 points

edited Jul 8, 2019 by Kalgi 4,348 views
0 votes
1 answer
+5 votes
6 answers

Lowercase in Python

You can simply the built-in function in ...READ MORE

answered Apr 11, 2018 in Python by hemant
• 5,790 points
3,905 views
+2 votes
3 answers

How can I play an audio file in the background using Python?

down voteacceptedFor windows: you could use  winsound.SND_ASYNC to play them ...READ MORE

answered Apr 4, 2018 in Python by charlie_brown
• 7,720 points
13,442 views
0 votes
1 answer

How can I compare the content of two files in Python?

Assuming that your file unique.txt just contains ...READ MORE

answered Apr 16, 2018 in Python by charlie_brown
• 7,720 points
2,593 views
webinar REGISTER FOR FREE WEBINAR X
REGISTER NOW
webinar_success Thank you for registering Join Edureka Meetup community for 100+ Free Webinars each month JOIN MEETUP GROUP