After upgrading to Pandas 1.1, the last cell of 13-isolines-isochrones.ipynb example fails with a TypeError: "Set type is unordered" (see Traceback below)
This worked as expected with Pandas 1.0.5, but fails with Pandas 1.1 or 1.1.1
Root cause is that this code initializes a data frame with subgraph.nodes():
subgraph.nodes() is a NodeView, which behaves both like a dictionary and a set. These are unordered types, but Pandas needs an ordered collection such as a numpy array or list. Pandas 1.1 introduced a type check to catch this in issue 32582.
Traceback
---------------------------------------------------------------------------
TypeError Traceback (most recent call last)
in
26 return isochrone_polys
27
---> 28 isochrone_polys = make_iso_polys(G, edge_buff=25, node_buff=0, infill=True)
29 fig, ax = ox.plot_graph(G, show=False, close=False, edge_color='#999999', edge_alpha=0.2, node_size=0)
30 for polygon, fc in zip(isochrone_polys, iso_colors):
in make_iso_polys(G, edge_buff, node_buff, infill)
5
6 node_points = [Point((data['x'], data['y'])) for node, data in subgraph.nodes(data=True)]
----> 7 nodes_gdf = gpd.GeoDataFrame({'id': subgraph.nodes()}, geometry=node_points)
8 nodes_gdf = nodes_gdf.set_index('id')
9
~/miniconda3/envs/osmnx-examples/lib/python3.8/site-packages/geopandas/geodataframe.py in __init__(self, *args, **kwargs)
87 crs = kwargs.pop("crs", None)
88 geometry = kwargs.pop("geometry", None)
---> 89 super(GeoDataFrame, self).__init__(*args, **kwargs)
90
91 # need to set this before calling self['geometry'], because
~/miniconda3/envs/osmnx-examples/lib/python3.8/site-packages/pandas/core/frame.py in __init__(self, data, index, columns, dtype, copy)
466
467 elif isinstance(data, dict):
--> 468 mgr = init_dict(data, index, columns, dtype=dtype)
469 elif isinstance(data, ma.MaskedArray):
470 import numpy.ma.mrecords as mrecords
~/miniconda3/envs/osmnx-examples/lib/python3.8/site-packages/pandas/core/internals/construction.py in init_dict(data, index, columns, dtype)
281 arr if not is_datetime64tz_dtype(arr) else arr.copy() for arr in arrays
282 ]
--> 283 return arrays_to_mgr(arrays, data_names, index, columns, dtype=dtype)
284
285
~/miniconda3/envs/osmnx-examples/lib/python3.8/site-packages/pandas/core/internals/construction.py in arrays_to_mgr(arrays, arr_names, index, columns, dtype, verify_integrity)
81
82 # don't force copy because getting jammed in an ndarray anyway
---> 83 arrays = _homogenize(arrays, index, dtype)
84
85 columns = ensure_index(columns)
~/miniconda3/envs/osmnx-examples/lib/python3.8/site-packages/pandas/core/internals/construction.py in _homogenize(data, index, dtype)
349 val = dict(val)
350 val = lib.fast_multiget(val, oindex._values, default=np.nan)
--> 351 val = sanitize_array(
352 val, index, dtype=dtype, copy=False, raise_cast_failure=False
353 )
~/miniconda3/envs/osmnx-examples/lib/python3.8/site-packages/pandas/core/construction.py in sanitize_array(data, index, dtype, copy, raise_cast_failure)
450 subarr = _try_cast(arr, dtype, copy, raise_cast_failure)
451 elif isinstance(data, abc.Set):
--> 452 raise TypeError("Set type is unordered")
453 elif lib.is_scalar(data) and index is not None and dtype is not None:
454 data = maybe_cast_to_datetime(data, dtype)
TypeError: Set type is unordered
After upgrading to Pandas 1.1, the last cell of 13-isolines-isochrones.ipynb example fails with a
TypeError: "Set type is unordered"
(see Traceback below)This worked as expected with Pandas 1.0.5, but fails with Pandas 1.1 or 1.1.1
Root cause is that this code initializes a data frame with
subgraph.nodes()
:subgraph.nodes()
is aNodeView
, which behaves both like a dictionary and a set. These are unordered types, but Pandas needs an ordered collection such as a numpy array or list. Pandas 1.1 introduced a type check to catch this in issue 32582.Traceback