matplotlib-devel Mailing List for matplotlib

On Tuesday 26 October 2004 19:52, John Hunter wrote:
> >>>>> "Norbert" == Norbert Nemec <Nor...@gm...> writes:
>
> Norbert> Hi there, in the attachment, find a patch for the legend
> Norbert> to behave correctly when some of the handles are set to
> Norbert> None. (In which case the corresponding space is just left
> Norbert> empty.)
>
> When would some of the handles be None? That looks like a bug to
> me...
I'm probably using legends in an unusual way (you might call it "abusing"...): 
In my plot, I have certain information refering to individual plot-lines. 
These, I put regularly into the legend, together with a handle of the 
corresponding line.
Other information refers to the whole figure, but should be visible in a 
similar way as the regular legend information. The way I do this, is to place 
it in additional legend entries without handle.
As an example: i have different datasets for different energies and different 
bfields. One figure should now contain five plots of identical energy but 
different bfield. The legend box would then p.e. contain one line "energy=2.3 
eV" without handle, and five lines "bfield=?? T" with handles. In between, I 
can even put one additional empty line to make everything more readable.
The current code handles this "abuse" nearly correct, except for the incorrect 
rearrangement in _update_positions. My patch should not affect anyone who 
uses the legend in the regular way, and for those who abuse the legend 
intentionally or unintentionally, the patched version certainly behaves more 
predictable.
-- 
_________________________________________Norbert Nemec
 Bernhardstr. 2 ... D-93053 Regensburg
 Tel: 0941 - 2009638 ... Mobil: 0179 - 7475199
 eMail: <No...@Ne...>

Rather than drawing the conclusion that Carl can't read English or that he
thinks we're going to start a fundraiser to raise the 10000,ドル I think we
can guess that marching squares is probably NOT covered by the patent, but
that seeing a big dollar number and his title should scare us off testing
the patent. Presumably there are alternatives to marching squares and I'd
pursue them, unless you feel like poking Carl with another stick :-)
Gary R
*********** REPLY SEPARATOR ***********
On 26/10/2004 at 12:59 Horton, Carl (GE Healthcare) wrote:
> Curtis: attached is a copy of the license agreement required for use of
> the Marching Cubes/VTK algorithms and related software. Once this
> agreement has been executed and GE has received the requisite payments,
> your license will be automatic. Thanks.
> 
> 			
> 
> 
> > Carl B. Horton
> > GE Healthcare
> > Chief IP Counsel
> > 
> > P: 262 513-4022
> > F: 414 918-1641
> > C: 262 385-7315
> > D: *320-4022 
> > E: Car...@me...
> www.gehealthcare.com
> 
> -----Original Message-----
> From: Curtis Cooper [mailto:cu...@hi...]
> Sent: Friday, October 01, 2004 2:42 PM
> To: Horton, Carl (GE Healthcare)
> Cc: Matplotlib Developers
> Subject: Marching Squares Algorithm
> 
> 
> Dear Mr. Horton:
> 
> I am investigating options for creating 2D contour plots for the freely
> distributable Matplotlib package (http://matplotlib.sourceforge.net/).
> The Matplotlib license requires all the software to be free for
> noncommercial and commercial distribution.
> 
> I had the idea to try to implement marching squares for this package. We
> know the marching cubes algorithm is patented, but what about the 2D
> marching squares? Can my implementation be used in this freely
> distributed package without obtaining a license grant?
> 
> Thanks,
> Curtis
------------------------------------
Gary Ruben gr...@bi...
<http://users.bigpond.net.au/gazzar>