Reporting this as a matplotlib bug because that's where I see the error.

I have some code which was running fine, drawing a scatter plot with 
transparent/alpha for the colour, like this...

ax1.scatter(sanjose_y,sanjose_x,color=(0.9,0.9,0.0,0.1),label='SanJose')

This used to draw a very faint transparent series of points which (where there 
were a lot of points) built up a fairly solid colour.  Now, after an upgrade to 
Ubuntu 9.10 I see only solid colour, no transparency/alpha at all.  Also (a 
different problem), I get an error message (when adding a legend, that no 
labels were defined).  This is also changed behaviour since the upgrade.  Seems 
like scatter has changed... but why?

I tried downloading matplotlib source code and compiling -- and despite a few 
glitches (like, it was by default Mac compilation) -- I think I got that going 
OK.  Still, I see exactly the same behaviour.  Scatter is behaving differently, 
and I really need that alpha/transparency!!!

Neither of these problems were evident on Ubuntu 9.04, and I was using the 
inbuilt matplotlib for that.

Please excuse if this report is in the wrong place -- my first attempt to 
report a bug in this package.

Cheers
A

--
Andrew 'Boo' Davie

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