I am trying to simplify a spatial polygons dataframe with the following code:
library(rmapshaper)
library(rgdal)
countyshapes <- readOGR("https://raw.githubusercontent.com/kjhealy/us-county/master/data/geojson/gz_2010_us_050_00_500k.json")
countyshapes <- ms_simplify(countyshapes, keep = 0.1)
But this returns the following error:
Error in sp::SpatialPolygonsDataFrame(polys, data = input@data) :
row.names of data and Polygons IDs do not match
Is there a way I can work around this error to simplify my SP object?
I ran the code and if it worked, preferably update the rmapshaper package:
packageVersion("rmapshaper")
#[1] ‘0.4.4’
countyshapes[1:5,]
#An object of class "SpatialPolygonsDataFrame"
#Slot "data":
# GEO_ID STATE COUNTY NAME LSAD CENSUSAREA
#1 0500000US01029 01 029 Cleburne County 560.100
#2 0500000US01031 01 031 Coffee County 678.972
#3 0500000US01037 01 037 Coosa County 650.926
#4 0500000US01039 01 039 Covington County 1030.456
#5 0500000US01041 01 041 Crenshaw County 608.840
Another alternative is that you use the sf::st_transform function