On Jan 22, 2013, at 7:01PM, Benjamin Root wrote:
>
>
> On Tue, Jan 22, 2013 at 9:10 PM, Drain, Theodore R (343P)
> <theodore.r.dr...@jpl.nasa.gov> wrote:
> I have to say I disagree with this "fix". None was a nice, very intuitive
> way to hide the label. Many Python systems use None in that kind of role and
> I really doubt anyone is going to use None when they meant "None" so
> converting it to a string seems like a bad idea.
>
> Ted
>
>
> IIRC, the problem is that in matplotlib, the python None has a special
> meaning in most places ("do the default thing"). Legends, by default, will
> create default labels. For some time, we were capable of distinguishing when
> someone submitted label=None and didn't state anything at all for labels.
> This often causes confusion down the draw stack, and we have been working
> towards getting rid of such distinctions.
>
> Of course, this is all from memory, which is notoriously bad. If someone
> else can bisect the commit that changed this, maybe that can refresh my
> memory and maybe I could see a reason to re-instate this behavior. Also, if
> anyone can spot where it is stated in the documentation or examples that None
> acts the same as "_nolegend_", then we can consider this a regression and get
> it fixed.
>
> Cheers!
> Ben Root
If None means do the default thing, then great. I always interpreted the
default for a plot command (line, patch, scatter, bar, etc.) to be no legend
entry, unless explicitly given. While not the specification as you have given
it (default is default labels), this is my working specification (I have not
yet migrated to 1.2.0).
Cheers,
Sterling
PS Notwithstanding this possible point of difference of opinion, I think the
matplotlib team is awesome, and puts out a great product. So I am willing to
concede the point if no reversion is made.
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