On 06/10/2010 04:41 AM, Mike Bauer wrote: > Hello, > > Is there a way to get the data value at a specific longitude/latitude > from an array that has been projected and smoothed with basemap and > transform_scalar to a higher grid density? > > My original data is a global lat,lon array (73,144) that I process by > hemisphere with a polar centered 'laea' projection (limited to 15 > degrees in each hemisphere). The data is also > run through transform_scalar w/ say the result array being (180,360). > What I want is a way to either get the data value at lon=x,lat=y from > this array or a way to map the indices (180,360) such that > I know index i,j is bound by a set of latitudes and longitudes. >
Not sure I understand completely, but note that a basemap instance is a callable. By default it transforms from lon,lat to map coordinates, but it also takes a kwarg, 'inverse'. If true, to transforms back from map coordinates to lon,lat. If your data have been transformed to a regular grid in map coordinates, this should allow you to find out what those grid cells are in lon,lat. Eric > Thanks for any suggestions. > > Mike > > ------------------------------------------------------------------------------ > ThinkGeek and WIRED's GeekDad team up for the Ultimate > GeekDad Father's Day Giveaway. ONE MASSIVE PRIZE to the > lucky parental unit. See the prize list and enter to win: > http://p.sf.net/sfu/thinkgeek-promo > _______________________________________________ > Matplotlib-users mailing list > Matplotlib-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/matplotlib-users ------------------------------------------------------------------------------ ThinkGeek and WIRED's GeekDad team up for the Ultimate GeekDad Father's Day Giveaway. ONE MASSIVE PRIZE to the lucky parental unit. See the prize list and enter to win: http://p.sf.net/sfu/thinkgeek-promo _______________________________________________ Matplotlib-users mailing list Matplotlib-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/matplotlib-users
