I can't replicate this on Master, and the doc example built OK, so I'm not clear where your error is coming from. Are you sure you are using 2.1.1? i.e. print(matplotlib.__version__). What backend are you using, etc...

Hmmm, well I can't replicate using 2.1.1 and MacOSX as well, so... My guess would be your install is slightly messed up. Try a fresh install?

I tried with python 3.6.3 installed with Homebrew and the same problem

How are you running the example from inside ipython? If possible, put the print statements in the example just to be sure that is actually the environment you are using. BTW< the above indicates you are still using the Anaconda build. I'm not sure what "Anaconda custom" means. Maybe thats what brew installs...

I run the example from the terminal, not from ipython. I deleted the Anaconda app and tried with the python 2.7.10 from MacOS and it is ok but it's not with the 3.6.3 installed with Homebrew

Not convinced you were actually running w 2.1.1 then. Copy the example locally and run w the print statements.

If it was me I’d stick w Anaconda. Make sure you install pip and IPython into your environment. Don’t install matpltolib w pip. Conda works really well but can still lead to conflicting versions of things lying around.

You're right, it's the 1.3.1 version with the python 2.7.10. So, the only way to run properly the example is with another version than the 2.1.1. Sorry, I'm very slow because I'm a little lost with the different version of python and the conflicts between the versions.

So you think it's better to work with Conda than the version with Homebrew ?

No I’m not convinced you were using 2.1.1 when you got the error. Can you please reproduce the error with the version number printed from the script. I can not reproduce the error on a Mac using 2.1.1 so the most likely problem is your setup.

Again strongly suggest anaconda and using conda to install matplotlib not pip.

I'll close. Feel free to reopen if you really think there is a matplotlib bug and you have solid debug info. If you continue to have install problems please try the mailing list or stack overflow.

I come back after some tests. I reinstalled conda, updated matplotlib with conda. When I installed conda, I had the 2.1.0 version but the update didn't solve the issue. I still have the problem.

Reminder
MacOS 10.13.1

Please put the print statements in the example. Otherwise you can easily trick yourself as to what version of python you are running.

I'm really sorry and I feel very noob but what's the print statement you talk about ? Did you mean that I have to ask clearly the version of python with python -V rather than with conda list python ?

I'm continuing to try to find a solution and I found a weird thing. If I make conda update matplotlib I obtain a custom version of anaconda. If I don't make it I have the version 2.1.0.

I tested with the two possibilities and none is working

• python 3.6.3 custom python + matplotlib 2.1.1.
• python 3.6.3 + matplotlib 2.1.0

Here is the sequence I used to run the 2 tests

Thanks for helping me ! Really !

Copy the script you are running to your local directory, and add the print statements after you import matplotlib:

import matplotlib
import sys

print(sys.version)
print('matplotlib.__version__')
print(matplotlib.get_backend())

Sorry, typo. Don't put the version in quotes....

Yes, I just modified the image, I saw after posting sorry

And that gives you the distorted radar chart? I'll re-open, but someone else will have to reproduce...

Yes, always the bug. For informations, I'm on a new Mac Book Pro touch bar. I don't know if the hardware could change something.

I doubt the slight difference in pythons make a difference here

$ pythonw ./radar_chart.py
3.6.3 | packaged by conda-forge | (default, Dec  9 2017, 16:20:51)
[GCC 4.2.1 Compatible Apple LLVM 6.1.0 (clang-602.0.53)]
2.1.1
MacOSX

Are you sure you didn't modify radar_chart.py asside from the print statements? At this point I would completely uninstall conda and try again, but I a[preciate that may not be an option

I modified the legend only just to test. But to be definitely sure I will test to download the exact file but there is no chance to be that because I have already redowloaded it and tested it. I have already completely uninstall conda and try again too.

With the exact file

It seems to be the center of the axis, doesn't it ?

I've never modified the matplotlibrc file. Just downloaded conda and updated matplotlib to 2.1.1.

Just to be sure, can you remove ~/.matplotlib (or move it to ~/.matplotlibOld if you might have something in there you want)?

I come back with another test : with anaconda2 (python version 2.7) I have the same problem while with python2.7 coming with MacOS I haven't the bug. Very weird ..

I just tried by installing python 3.6.4., create a virtualenv and try to run and the same bug ! The only way is to use the python2.7 coming with MacOS

I tried on W10 with python 3.6 and I have the bug too. I think there is something I'm making wrong.. This isn't the code because we juste copy-paste the code from internet. I'm really lost ..

What exact code are you using? Please re-write it here.

I copy paste the code on this page : https://matplotlib.org/examples/api/radar_chart.html

That example changed in 2.1.1. Whats more, the docs shouldn't have those links any more, and indeed you are linking to 2.0.2 there. The new link is https://matplotlib.org/gallery/api/radar_chart.html

This is definitely a documentation bug though. The canonical docs should not still have links to https://matplotlib.org/examples/

ping @tacaswell @QuLogic @anntzer or anyone else who understands how the docs are all linked up. This was pretty confusing: examples should not be a thing in the top-level docs of the non-historical docs if possible.

Yes it is working !! Finally !! Thank's a lot for your help @jklymak and sorry I really didn't see that was a old version ..

Not at all your fault. Sure google sent you there and there is no indication it’s old doc except up in the tab title. The canonical docs really should not point to old pages!

See #9556.

What is different between the two examples? The only change I can see is 202f40f and I do not understand why that would cause this...

And yes, we definitely need to clean up the 'canonical' docs...

@quentinfrancois0 Sorry for the frustration and thanks for sticking with us!

No self.set_theta_zero_location('N') in the old code?

Theta changed meaning in one of the calls.

I'm going to close this, as the example in the current version of the docs works fine.

I am having the same problem using W10, python 3.6 and matplotlib v2.2

Could you upgrade to Matplotlib 2.2.2 (the latest version) and try again?

They should make the v2.2.2 bigger in the websites from where we are copying tho code and have a specific warning for that . It took me 2 hours to figure the version problem.

I'll re-open. Someone needs to sort out how to get the old pages to at least have a big blaring banner across them that says they are obsolete.

@JLegs and I are working on documentation duplication at the sprint.

The static site has a ton* of old-version docs, that are manually propagated to the top-level on release.

Our plan is to inject old-version docs with approximate canonical links (for bots) and banners (for humans) via script, one folder at a time.

The first-approximation canonical link (#9556) is to delete the version string from the url.

More sophisticated approaches (#10854) to identifying similar-content/different-named descendants are punted. In the future, such would improve cleanup on docs release, relevant to OP's issue.

* All versions of matplotlib will remain documented in the (huge) static site because scientific users need reproducibility but can't maintain local packages. (Notably, 2.2.2 is long-term support officially; 1.5.3 is not.)

Edit: PR submitted. But - nothing apparent forwards to a 404 because nothing, not even 'examples' transitioned to 'gallery', has been cleanup'd. We could begin cautiously: instead of deleting, add warnings to 'current' (unversioned) docs which aren't in latest version?

Canonical links and redirects were added in matplotlib/matplotlib.github.com#49. There is also a banner noting that the page is outdated at the top of the page.