我在R中使用tigris包来获取某些地理编码的块组：
我的数据框：
> head(MyData)
ï..AddressId StreetAddressLine1 City ZipCode StateAbbreviation Latitude
1 60350 119 Summit Ave Winthrop 2152 MA 42.38445
2 6955669 1705 Chaise Ct Carson City 89703 NV 39.17730
3 6956266 13 Phillips Ave Shrewsbury 1545 MA 42.28119
4 6997538 38003 Wheeler Rd Dexter 97431 OR 43.94063
5 6956697 3919 Birkdale Ln Se Olympia 98501 WA 46.99440
6 6955879 117 Highland Ave Staten Island 10301 NY 40.61681
Longitude
1 -70.97491
2 -119.77846
3 -71.75263
4 -122.85481
5 -122.83683
6 -74.09748 …