Mauro Cavalcanti wrote: > Dear Jeff & ALL, > > This is just a simple question on plotting points on Basemap (maybe it > will have to be pursued further). I presume points could be plotted > onto maps, no matter what projection is used -- so, I have been > plotting quite well on maps using an Equirectangular projetion and one > of your "classical" examples shows the plot of points on maps using an > ortographic projection. However, my points are not displayed when I, > change the map projection, say, from Equirectangular to South Polar > Stereographic, even if most of the points are well within range in the > new projection. Any hints? > > Best regards, > > Mauro: If your points are defined in terms of longitude and latitude, you have to convert to map projection coordinates using the __call__ method of the Basemap instance, i.e.
x, y = m(lon, lat) # lon,lat can be arrays, lists or scalars. m is a Basemap instance. You then pass x,y to the plot command (be it 'plot', 'scatter', 'contour' or whatever). -Jeff -- Jeffrey S. Whitaker Phone : (303)497-6313 NOAA/OAR/CDC R/PSD1 FAX : (303)497-6449 325 Broadway Boulder, CO, USA 80305-3328 ------------------------------------------------------------------------------ SF.Net email is Sponsored by MIX09, March 18-20, 2009 in Las Vegas, Nevada. The future of the web can't happen without you. Join us at MIX09 to help pave the way to the Next Web now. Learn more and register at http://ad.doubleclick.net/clk;208669438;13503038;i?http://2009.visitmix.com/ _______________________________________________ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
