Andres Luhamaa wrote: > Jeff Whitaker wrote: > >> Andres Luhamaa wrote: >> >> >>> Hello! >>> When trying to make a simple map of Europe with countries drawn, one can >>> see that coastlines and country borders are not consistent. >>> Borders between Finland-Russia, Sweden-Norway, Germany-Denmark finish >>> somewhere in the sea, to name just a few. Is this a known issue and is >>> there a solution (coming at least)? >>> >>> Simple script, little zooming will help to see better. >>> >>> Best regards, >>> Andres >>> >>> Simple script: >>> #!/usr/bin/env python >>> import numpy as np >>> from mpl_toolkits.basemap import Basemap >>> import matplotlib.pyplot as plt >>> m=Basemap(llcrnrlon=-18.7,llcrnrlat=44.0,urcrnrlon=59.,urcrnrlat=63.2, >>> projection='lcc',lat_0=60,lon_0=0., >>> resolution ='i',area_thresh=1000.) >>> fig=plt.Figure() >>> m.drawcoastlines() >>> m.drawcountries() >>> plt.show() >>> >>> >>> >>> >> Andres: We get the country boundary database from Generic Mapping >> Tools, so unless they fix it, we won't have a fix. If you can suggest a >> better database that does not have this problem, I can try to >> incorporate it. >> >> I guess it is possible is also possible that this is intentional - and >> the border does extend into the sea. >> >> -Jeff >> >> > > Thank You for the answer. It really might be intentional, because the > border in sea never seems to be straight when it is drawn and actually > now looking the same borders in google maps, there is a strong > similarity. But I still think there might be an option to not draw the > borders on the sea, mask them out somehow. Would it be complicated to > add such an option or am I the only one disturbed by such an appearance? > > Andres >
Andres: It might be possible, but it certainly wouldn't be trivial. You would have to compute the intersection of the country boundaries with the coastline polygons and then clip. -Jeff >> ------------------------------------------------------------------------------ >> Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco, CA >> -OSBC tackles the biggest issue in open source: Open Sourcing the Enterprise >> -Strategies to boost innovation and cut costs with open source participation >> -Receive a $600 discount off the registration fee with the source code: SFAD >> http://p.sf.net/sfu/XcvMzF8H >> _______________________________________________ >> Matplotlib-users mailing list >> Matplotlib-users@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/matplotlib-users >> >> >> > > > ------------------------------------------------------------------------------ > Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco, CA > -OSBC tackles the biggest issue in open source: Open Sourcing the Enterprise > -Strategies to boost innovation and cut costs with open source participation > -Receive a $600 discount off the registration fee with the source code: SFAD > http://p.sf.net/sfu/XcvMzF8H > _______________________________________________ > Matplotlib-users mailing list > Matplotlib-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/matplotlib-users > -- Jeffrey S. Whitaker Phone : (303)497-6313 Meteorologist FAX : (303)497-6449 NOAA/OAR/PSD R/PSD1 Email : jeffrey.s.whita...@noaa.gov 325 Broadway Office : Skaggs Research Cntr 1D-113 Boulder, CO, USA 80303-3328 Web : http://tinyurl.com/5telg ------------------------------------------------------------------------------ Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco, CA -OSBC tackles the biggest issue in open source: Open Sourcing the Enterprise -Strategies to boost innovation and cut costs with open source participation -Receive a $600 discount off the registration fee with the source code: SFAD http://p.sf.net/sfu/XcvMzF8H _______________________________________________ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
