geopandas.py 文件源码

def values(cls, dataset, dimension, expanded, flat):
        dimension = dataset.get_dimension(dimension)
        idx = dataset.get_dimension_index(dimension)
        data = dataset.data
        if idx not in [0, 1] and not expanded:
            return data[dimension.name].values
        values = []
        columns = list(data.columns)
        arr = geom_to_array(data.geometry.iloc[0])
        ds = dataset.clone(arr, datatype=cls.subtypes, vdims=[])
        for i, d in enumerate(data.geometry):
            arr = geom_to_array(d)
            if idx in [0, 1]:
                ds.data = arr
                values.append(ds.interface.values(ds, dimension))
            else:
                arr = np.full(len(arr), data.iloc[i, columns.index(dimension.name)])
                values.append(arr)
            values.append([np.NaN])
        return np.concatenate(values[:-1]) if values else np.array([])