James Boyle wrote:
> Jeff,
>
> This is something I have noticed recently. If I set lon_0 = 180. using
> the robin projection , the parallels from 0 to 180 are drawn thicker
> than those from 180 to 360.
> Perhaps the 0 to 180 are drawn twice - with some small offset - due
> some wraparound problem.
> Enclosed is some code illustrating the problem and the pngs.
> It is not a glaring difference, but I think real. It also shows up if
> you look carefully at the output from simpletest.py in your examples.
>
> basemap .99.1 matplotlib 0.98.3 OS X 10.4
> --Jim
>
> m = basemap.Basemap(resolution='c',projection='robin',lon_0=180.)
> parallels = numpy.arange(-90.,90.,30.)
> m.drawparallels(parallels,labels=[1,0,0,0],color='r')
> pylab.title('lon_0=180')
> pylab.savefig('lon_0-180')
> pylab.clf()
>
> m = basemap.Basemap(resolution='c',projection='robin',lon_0=0.)
> parallels = numpy.arange(-90.,90.,30.)
> m.drawparallels(parallels,labels=[1,0,0,0],color='r')
> pylab.title('lon_0=0')
> pylab.savefig('lon_0-0')
> pylab.clf()
>
Jim: I can't reproduce this, so I suspect it's been fixed since basemap
0.99.1. Can you upgrade and let me know whether that fixes it for you?
-Jeff
(P.S. CC'ing matplotlib-users)
> ------------------------------------------------------------------------
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--
Jeffrey S. Whitaker Phone : (303)497-6313
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