pysal多边形对象未返回质心

Question

我使用pysal/cenpy来提取地理信息，但该对象通过调用centroid返回错误

import cenpy as cen
import pysal as ps
import geopandas as gpd 

dataset = 'ACSSF5Y2015'
con = cen.base.Connection(dataset)

con.set_mapservice('tigerWMS_ACS2017') 
geotmp = con.mapservice.query(layer=84, where='STATE=' + str(1))
type(geotmp)
#pandas.core.frame.DataFrame
type(geotmp.geometry[0])
#pysal.cg.shapes.Polygon

geotmp.geometry.centroid
AttributeError: 'Series' object has no attribute 'centroid'

在gds-scipy16中的内置数据集上进行了相同检查

type(data_table)
#pandas.core.frame.DataFrame
type(data_table.geometry[0])
#pysal.cg.shapes.Polygon

data_table.geometry[0].centroid
#(-94.90336786329912, 48.771730563701574)

如何纠正错误？

Answer 1

虽然这不能直接回答你的问题，但有一个更新的预发布版本的cenpy out，它更精简，可以避免你上面描述的问题(参见下面的例子)。Instructions for installing the pre-release can be found here和a gist demonstrating functionality here。

import cenpy
cenpy.__version__

>>> '1.0.0dev'

florida = cenpy.products.Decennial2010().from_state('Florida')

>>> Matched: Florida to Florida, FL within layer States

type(florida)

>>> geopandas.geodataframe.GeoDataFrame

type(florida.geometry[0])

>>> shapely.geometry.polygon.Polygon

print(florida.geometry[0].centroid)

>>> POINT (-9734271.078405051 3547557.287300871)