__init__.py 文件源码

def drawcounties(self,linewidth=0.1,linestyle='solid',color='k',antialiased=1,
                     ax=None,zorder=None,drawbounds=False):
        """
        Draw county boundaries in US. The county boundary shapefile
        originates with the NOAA Coastal Geospatial Data Project
        (http://coastalgeospatial.noaa.gov/data_gis.html).

        .. tabularcolumns:: |l|L|

        ==============   ====================================================
        Keyword          Description
        ==============   ====================================================
        linewidth        county boundary line width (default 0.1)
        linestyle        coastline linestyle (default solid)
        color            county boundary line color (default black)
        antialiased      antialiasing switch for county boundaries
                         (default True).
        ax               axes instance (overrides default axes instance)
        zorder           sets the zorder for the county boundaries (if not
                         specified, uses default zorder for
                         matplotlib.patches.LineCollections).
        ==============   ====================================================

        returns a matplotlib.patches.LineCollection object.
        """
        ax = ax or self._check_ax()
        gis_file = os.path.join(basemap_datadir,'UScounties')
        county_info = self.readshapefile(gis_file,'counties',\
                      default_encoding='latin-1',drawbounds=drawbounds)
        counties = [coords for coords in self.counties]
        counties = LineCollection(counties)
        counties.set_linestyle(linestyle)
        counties.set_linewidth(linewidth)
        counties.set_color(color)
        counties.set_label('counties')
        if zorder:
            counties.set_zorder(zorder)
        ax.add_collection(counties)
        return counties