geom_point.py 文件源码

def draw_legend(data, da, lyr):
        """
        Draw a point in the box

        Parameters
        ----------
        data : dataframe
        params : dict
        lyr : layer

        Returns
        -------
        out : DrawingArea
        """
        if data['fill'] is None:
            data['fill'] = data['color']

        size = (data['size']+data['stroke'])*SIZE_FACTOR
        stroke = data['stroke'] * SIZE_FACTOR
        key = mlines.Line2D([0.5*da.width],
                            [0.5*da.height],
                            alpha=data['alpha'],
                            marker=data['shape'],
                            markersize=size,
                            markerfacecolor=data['fill'],
                            markeredgecolor=data['color'],
                            markeredgewidth=stroke)
        da.add_artist(key)
        return da