Question

=“”

我正在制作热图以进行绘制使用Google谷歌地理编码API的城市。我遵循此链接enter link description here，因为我具有相同类型的数据。我在Google Developer页面中激活了API，并创建了一个密钥来使用它。我使用笔记本jupyter分别运行代码。

首先阻止它运行良好：

import pandas as pd
import numpy as np
import googlemaps
import gmaps

API_KEY = 'Geocoding API' 
gm = googlemaps.Client(key='key api ......')

第二个块成功运行：

data = pd.read_csv('dataset.csv', encoding = "ISO-8859-1", low_memory=False)
data = data.fillna('')                   # fill empty entries with ''
print(list(data))                        # print Variable Name
data.head()

第三次阻止它也运行良好

def Geocode(query):
    # do geocoding
    try:
        geocode_result = gm.geocode(query)[0]       
        latitude = geocode_result['geometry']['location']['lat']
        longitude = geocode_result['geometry']['location']['long']
        return latitude,longitude
    except IndexError:
        return 0

def GeocodeStreetLocationCity(data):
    lat=[]                            # initialize latitude list
    lng=[]                            # initialize longitude list
    start = data.index[0]             # start from the first data
    end = data.index[maxRow-1]        # end at maximum number of row
    for i in range(start,end+1,1):    # iterate all rows in the data
        isSuccess=True                # initial Boolean flag
        query = data.lat[i] + ' ' + data.long[i]  # try set up our query street-location-city 
        result=Geocode(query)
        if result==0:         # if not successful,
            query = data.lat[i] + ' ' + data.long[i]                     # try set up another query location-city
            result=Geocode(query)
            if result==0:     # if still not successful,
                query =  data.lat[i] + ' ' + data.long[i]                  # try set up another query street-city
                result=Geocode(query)
                if Geocode(query)==0: # if still not successful,
                    isSuccess=False                                           # mark as unsuccessful
                    print(i, 'is failed')
                else:
                    print(i, result)
            else:
                print(i, result)
        else:
            print(i, result)
        if isSuccess==True:           # if geocoding is successful,
            # store the results
            lat.append(result[0])     # latitude
            long.append(result[1])     # longitude
    return lat,long

运行它时，我在最后一个块中遇到了错误：

# call the geocoding function
[lat,long]=GeocodeStreetLocationCity(data)

# we put the list of latitude,longitude into pandas data frame
df = pd.DataFrame(
    {'latitude': lat,
     'longitude': long
    })

错误是：

运行代码时，它在最后一个块中返回错误：

 TypeError                                 Traceback (most recent call last)
    <ipython-input-67-d174cb0d8b65> in <module>
          1 # call the geocoding function
    ----> 2 [lat,long]=GeocodeStreetLocationCity(data)         


    ---> 18         query = data.lat[i] + ' ' + data.long[i]  # try set up our query street-location-city        

    TypeError: ufunc 'add' did not contain a loop with signature matching types dtype('<U32') dtype('<U32') dtype('<U32')

我认为我有一个字符串数组，而不是浮点数。这就是dtype（'

有人可以建议我一个解决方案吗？

谢谢

ufunc'add'不包含签名匹配类型为dtype（'<u32'）

0 个答案: