mask.py 文件源码

def open_vector(filename, layer=''):
    """ Fetch wfs features within bounding box """
    logger.info('Opening %s as vector file' % filename, action='Open file', actee=filename, actor=__name__)
    ds = ogr.Open(filename)
    if layer == '':
        layer = ds.GetLayer(0)
    else:
        layer = ds.GetLayer(layer)
    return (ds, layer)