第 21 章 网络爬虫

21.1 链家网

21.2 猪肉价格

## Reading layer `bou2_4p' from data source `H:\R_for_Data_Science\demo_data\chinamap_data\bou2_4p.shp' using driver `ESRI Shapefile'
## Simple feature collection with 925 features and 7 fields
## geometry type:  POLYGON
## dimension:      XY
## bbox:           xmin: 73.45 ymin: 6.319 xmax: 135.1 ymax: 53.56
## epsg (SRID):    NA
## proj4string:    NA