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John Hunter wrote:
>>>>>>"Jeff" == Jeff Whitaker <js...@fa...> writes:
>>>>>> 
>>>>>>
>
> Jeff> How do I suppress drawing a line around the polygon when
> Jeff> using fill? I've tried fill(x,y,'gray',linewidth=0), but I
> Jeff> still get a little tiny line (which is especially noticeable
> Jeff> when using the postscript backend).
>
>Just make the facecolor and edgecolor the same
>
> 
>
John: Thanks - I figured that one out myself about 5 minutes after I 
sent the message.
I'm currently working on a map plotting module. I've added the ability 
to plot filled continents on various map projections, using the GSHHS 
coastline polygon dataset 
(http://www.soest.hawaii.edu/wessel/gshhs/gshhs.html). This dataset 
provides polygon segments that define continental outlines. However, 
before I post it here I'd like to also provide the capability to fill 
the 'wet' areas as well. In order to do this I need to figure out how 
to fill the area between the polygons. Looks like this module 
(http://www.dezentral.de/soft/Polygon/index.html) would do the trick, 
but it requires the generaly polygon clipping C library. Do you have 
any suggestions?
Thanks for you help,
-Jeff
-- 
Jeffrey S. Whitaker Phone : (303)497-6313
Meteorologist FAX : (303)497-6449
NOAA/OAR/CDC R/CDC1 Email : Jef...@no...
325 Broadway Web : www.cdc.noaa.gov/~jsw
Boulder, CO, USA 80303-3328 Office : Skaggs Research Cntr 1D-124

>>>>>> "Jeff" == Jeff Whitaker <js...@fa...> writes:
> Jeff> How do I suppress drawing a line around the polygon when
> Jeff> using fill? I've tried fill(x,y,'gray',linewidth=0), but I
> Jeff> still get a little tiny line (which is especially noticeable
> Jeff> when using the postscript backend).
On 2004年12月28日, John Hunter apparently wrote:
> Just make the facecolor and edgecolor the same
I'll chime in here because I know someone is creating arrows
using polygons. I have found that *any* width along the
edge is a problem for arrows: they must be *only* filled and
not stroked or they look like they point to the wrong point.
(Perhaps 0.3 point unscaled would not be a serious problem
for many uses, but remember there is a join at the tip!)
So: is it possible to fill a polygon without stroking the
edge (or to set the edge with to approximate 0)?
By way of comment: this was a real problem in gnuplot up to
version 3.8. (I've been meaning to check whether it was
fixed in 4.0.) The arrows were stroked as well as filled,
and they often looked very wrong.
fwiw,
Alan Isaac

Hi,
working more and more with matplotlib and adapt my local tools
I find that (for me) 2 plotting functionalities are still missing
(but are in the list of the ''goals''):
- plotting a surface either using a mesh/grid like plotwith colours or 
a smooth rendering
- have the connect function update the ''key'' field when using the 
keyboard
What is the present status/effort on these issues?
thanks!
Eric Emsellem
-- 
===============================================================
Observatoire de Lyon ems...@ob...
9 av. Charles-Andre tel: +33 4 78 86 83 84
69561 Saint-Genis Laval Cedex fax: +33 4 78 86 83 86
France http://www-obs.univ-lyon1.fr/eric.emsellem
===============================================================

>>>>> "Jeff" == Jeff Whitaker <js...@fa...> writes:
 Jeff> How do I suppress drawing a line around the polygon when
 Jeff> using fill? I've tried fill(x,y,'gray',linewidth=0), but I
 Jeff> still get a little tiny line (which is especially noticeable
 Jeff> when using the postscript backend).
Just make the facecolor and edgecolor the same
 >>> fill(x,y, edgecolor='gray', facecolor='gray)
or whatever color you want them to be. You can also use aliases
 >>> fill(x,y, ec='gray', fc='gray)
FYI, the new set/get introspection is designed to help you find these
things, by printing property names and the values they accept
In [3]: p, = fill(x,y)
In [4]: p
Out[4]: <matplotlib.patches.Polygon instance at 0x3b5ec60>
In [5]: set(p)
 alpha: float
 antialiased or aa: [True | False]
 clip_box: a matplotlib.transform.Bbox instance
 clip_on: [True | False]
 edgecolor or ec: any matplotlib color - see help(colors)
 facecolor or fc: any matplotlib color - see help(colors)
 figure: a matplotlib.figure.Figure instance
 fill: [True | False]
 label: any string
 linewidth or lw: float
 lod: [True | False]
 transform: a matplotlib.transform transformation instance
 visible: [True | False]
 zorder: any number
Hope this helps,
JDH

How do I suppress drawing a line around the polygon when using fill?
I've tried fill(x,y,'gray',linewidth=0), but I still get a little tiny 
line (which is especially noticeable when using the postscript backend).
-Jeff
-- 
Jeffrey S. Whitaker Phone : (303)497-6313
NOAA/OAR/CDC R/CDC1 FAX : (303)497-6449
325 Broadway Web : http://www.cdc.noaa.gov/~jsw
Boulder, CO, USA 80305-3328 Office: Skaggs Research Cntr 1D-124