Re: [Matplotlib-users] What does legend(loc=best) does?

[John G. <jn...@eu...>]

This might be a feature rather than a bug.

The legend auto-placement code is a bit lazy -- due to the fact that I 
wrote it rather than JDH :)

Anyway, it only tries to avoid the points that define a line, rather 
than the lines themselves.

Much of the time that works well, but since it only takes two points to 
define a line you can end up with the lines crossing the legend.   The 
good news is that if a line does cross the legend, and you can see a 
better position for the legend then it almost surely means that the line 
is straight throughout the region where it crosses the legend.

Try using the pan/zoom buttons on your plot to move a point into the 
legend area and it should jump out of the way.

Eg: try this little snippet -- use your pan/zoom skills to position one 
of the dots over the legend ;)

from pylab import *
plot(range(5), 'o-', label='oops')
legend(loc=0)
show()

John

John Hunter wrote:

> >>>>> "Florian" == Florian Lindner <mai...@xg...> writes:
>
>     Florian> Hello, how does loc=0 (best) affects the placement of the
>     Florian> legend? I can't really figure out any influence. There is
>     Florian> space (on the upper left) where the legend could be
>     Florian> placed without hiding any lines but it's still placed on
>     Florian> the upper right.
>
> If what you say is correct, then it is a bug.  Please post a complete
> example.
>
> JDH
>
>
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