Boxplot: allow whiskers to always cover entire range

[stefanv]

Sometimes, one needs to have the whiskers of a boxplot cover the entire data range. This is typically achieved by setting whis to a large enough value. However, if the 25-75 percentiles are identical, then the value of whis has no influence, and no whiskers are drawn.

[tacaswell]

@phobson another old boxplot issue that you might want to look at.

[phobson]

@tacaswell Thanks. Will do.

[phobson]

@stefanv it just occured to me that you can already accomplish this by setting the whis kwarg to something sufficiently high -- 1e6 should be safe for most real-life datasets ;)

[stefanv]

@phobson Like the bug description states: the value of whis is ignored under certain circumstances.

[phobson]

Well I certainly missed that part. Apologies.

But if Q1 == Q3, then Q2 (median) == Q1 == Q3 and I'm not sure how much boxplots are going to tell you.

That said, I can add some logic in #2643 that if Q1 == Q3, the whisker limits can fall back to 5th/95th percentiles or min/max.

[stefanv]

I think as long as the whiskers do not disappear I'd be quite happy! Thanks for having a look at this @phobson

[tacaswell]

@phobson Did this get taken care of by #2643?

[phobson]

Yes. With the whis kwarg, you can now pass 'range' or a list of
percentiles.

On Wed, Feb 26, 2014 at 7:39 PM, Thomas A Caswell
notifications@github.comwrote:

@phobson https://github.com/phobson Did this get taken care of by #2643#2643
?

Reply to this email directly or view it on GitHubhttps://github.com//issues/1455#issuecomment-36207153
.