In [1]:
data(meuse, package = "sp") # load data.frame from sp
library(sf)
## rocker_geospatial_sf/demo/meuse_sf.R
Linking to GEOS 3.6.2, GDAL 2.2.3, proj.4 4.9.3
In [2]:
meuse_sf = st_as_sf(meuse, coords = c("x", "y"), crs = 28992)
meuse_sf[1:5,]
summary(meuse_sf[1:5,])
cadmiumcopperleadzincelevdistomffreqsoillimelandusedist.mgeometry
11.7 85 299 1022 7.909 0.00135803 13.6 1 1 1 Ah 50 POINT (181072 333611)
8.6 81 277 1141 6.983 0.01222430 14.0 1 1 1 Ah 30 POINT (181025 333558)
6.5 68 199 640 7.800 0.10302900 13.0 1 1 1 Ah 150 POINT (181165 333537)
2.6 81 116 257 7.655 0.19009400 8.0 1 2 0 Ga 270 POINT (181298 333484)
2.8 48 117 269 7.480 0.27709000 8.7 1 2 0 Ah 380 POINT (181307 333330)
    cadmium          copper          lead            zinc       
 Min.   : 2.60   Min.   :48.0   Min.   :116.0   Min.   : 257.0  
 1st Qu.: 2.80   1st Qu.:68.0   1st Qu.:117.0   1st Qu.: 269.0  
 Median : 6.50   Median :81.0   Median :199.0   Median : 640.0  
 Mean   : 6.44   Mean   :72.6   Mean   :201.6   Mean   : 665.8  
 3rd Qu.: 8.60   3rd Qu.:81.0   3rd Qu.:277.0   3rd Qu.:1022.0  
 Max.   :11.70   Max.   :85.0   Max.   :299.0   Max.   :1141.0  
                                                                
      elev            dist                om        ffreq soil  lime 
 Min.   :6.983   Min.   :0.001358   Min.   : 8.00   1:5   1:3   0:2  
 1st Qu.:7.480   1st Qu.:0.012224   1st Qu.: 8.70   2:0   2:2   1:3  
 Median :7.655   Median :0.103029   Median :13.00   3:0   3:0        
 Mean   :7.565   Mean   :0.116759   Mean   :11.46                    
 3rd Qu.:7.800   3rd Qu.:0.190094   3rd Qu.:13.60                    
 Max.   :7.909   Max.   :0.277090   Max.   :14.00                    
                                                                     
    landuse      dist.m             geometry
 Ah     :4   Min.   : 30   POINT        :5  
 Ga     :1   1st Qu.: 50   epsg:28992   :0  
 Aa     :0   Median :150   +proj=ster...:0  
 Ab     :0   Mean   :176                    
 Ag     :0   3rd Qu.:270                    
 Am     :0   Max.   :380                    
 (Other):0