projection.py 文件源码

def _basemap(self, geobounds, **kwargs):
        if not basemap_enabled():
            return None

        local_kwargs = dict(projection = "lcc",
                            lon_0 = self.stand_lon,
                            lat_0 = self.moad_cen_lat,
                            lat_1 = self.truelat1,
                            lat_2 = self.truelat2,
                            llcrnrlat = geobounds.bottom_left.lat,
                            urcrnrlat = geobounds.top_right.lat,
                            llcrnrlon = geobounds.bottom_left.lon,
                            urcrnrlon = geobounds.top_right.lon,
                            rsphere = Constants.WRF_EARTH_RADIUS,
                            resolution = 'l')
        local_kwargs.update(kwargs)

        _basemap = Basemap(**local_kwargs)

        return _basemap