matplotlib-users

[Matplotlib-users] scatter plot legend

[Rich D. <dr...@in...>]

Hello,

I'm looking for the cleanest way to put a sort of legend into a scatter
plot.  I want a legend box that says "<blue circle> is something, <red
square> is somethingelse" and so on.  However I can't seem to set line
labels as I can with other kinds of plots, and for some reason legend for
prints the text that I supply vertically (and of course it doesn't print
the <blue circle> or whatever).

Any suggestions?  Just paste some text()?  (And if I do that, can I get it
to put a <blue circle> next to my label?)

Thanks to the developers of matplotlib and those who contribute support on
this list!

Rich

Re: [Matplotlib-users] scatter plot legend

[Jim B. <jb...@se...>]

On Mon, 7 Mar 2005, Rich Drewes wrote:

> 
> Hello,
> 
> I'm looking for the cleanest way to put a sort of legend into a scatter
> plot.  I want a legend box that says "<blue circle> is something, <red
> square> is somethingelse" and so on.  However I can't seem to set line
> labels as I can with other kinds of plots, and for some reason legend for
> prints the text that I supply vertically (and of course it doesn't print
> the <blue circle> or whatever).
> 

Hi, 

  I had that vertical text problem when i first used legend...until
John showed me my error.

I think:

legend(('aLabel',), 'upper left')   
notice that needed , after the 'aLabel'

For more than one line label:

legend(('aLabel1', 'aLabel2', 'aLabel3'), 'upper left')

...i'm still several versions behind the current matplotlib
release, so i don't know if the syntax may be different now.

Hope this helps,

Jim

Re: [Matplotlib-users] scatter plot legend

[Rich D. <dr...@in...>]

On Mon, 7 Mar 2005, Jim Benson wrote:

>   I had that vertical text problem when i first used legend...until
> John showed me my error.
> 
> I think:
> 
> legend(('aLabel',), 'upper left')   
> notice that needed , after the 'aLabel'

Ah yes, the old tuple trick.  Duh.  Thanks.

Now the only question remains:  is there any way to put the marker
*symbol* itself into the legend too?  On a regular (non-scatter) plot's
legend that is taken care of automatically, but in a scatter plot the
'lines' can't be labeled (I think).

Thanks,
Rich