matplotlib-users Mailing List for matplotlib (Page 2)

For this example, I am finding the exact same behavior with the Mac OS X backend as with the gtkcairo and gtkagg backends (on Mac OS X and Cygwin). If this is a bug, then which backend can we use as an example of the correct behavior for this code?

Best,
--Michiel


--- On Thu, 11/11/10, John Hunter <jd...@gm...> wrote:

> From: John Hunter <jd...@gm...>
> Subject: Re: [Matplotlib-users] Mac OSX backend
> To: "mdekauwe" <mde...@gm...>
> Cc: mat...@li..., "Michiel de Hoon" <mjl...@ya...>
> Date: Thursday, November 11, 2010, 7:39 AM
> On Thu, Nov 11, 2010 at 6:32 AM,
> mdekauwe <mde...@gm...>
> wrote:
> >
> > It isn't any one script, if you did
> >
> > import numpy as np
> > import matplotlib.pyplot as plt
> > x = np.arange(10)
> > for i in xrange(10):
> >    plt.plot(x)
> >    plt.savefig('x.png')
> >
> > it pops up the plot window even though I didn't ask it
> to. I don't get this
> > functionality on a non mac system. So I wonder if it
> relates to the choice
> > of backend
> 
> 
> I see -- so it is raising the window even w/o show. 
> This is a bug,
> but a minor one.  I suggest at the top of your script
> (before pyplot
> import) doing
> 
> import matplotlib
> matplotlib.use('agg')
> 
> if you only want to save hardcopy png -- macosx may not
> support
> offline rendering.
> 


      

On 11/11/10 3:33 AM, Andres Luhamaa wrote:
> Hi,
> I have a problem creating map in "aeqd" projection. The problem seems 
> to be that the map center, given by arguments lon_0 and lat_0 is 
> taking into account only full part of the coordinate. If I want to get 
> map center at coordinates lon_0=25.5 and lat_0=58.5, I get center in 
> lon_0=25 and lat_0=58, instead. I run numpy and matplotlib dev 
> versions (a few weeks old) and basemap 1.0
>
> Best regards,
> Andres Luhamaa

Andres:  I can't reproduce this with GTKAgg or any other backend, with 
basemap svn.  I don't see anything that has changed since 1.0 that would 
have affected this behavior though.

-Jeff
>
> I use following example:
>
> import pylab as plt
> from mpl_toolkits.basemap import Basemap
> lat_0=58.5
> lon_0=25.5
> width=400000
> height=400000
>
> m=Basemap(projection='aeqd',lat_0=lat_0, 
> lon_0=lon_0,width=width,height=height,resolution='i')
>
> m.drawcoastlines()
> m.drawmeridians(range(20,30),labels=[0,0,1,0])
> m.drawparallels(range(45,65),labels=[1,0,0,0])
>
> ## what I expect to be map center
> X,Y=m(lon_0,lat_0)
> m.plot([X],[Y],'ko')
> plt.text(X,Y,'expected')
>
> ## actual map center
> X,Y=m(int(lon_0),int(lat_0))
> m.plot([X],[Y],'ro')
> plt.text(X,Y,'actual')
>
> plt.show()