library(sp)
demo(meuse, ask = FALSE, echo = FALSE)
summary(ST_as.sf(meuse))
summary(ST_as.sf(meuse.grid))
summary(ST_as.sf(meuse.area))
summary(ST_as.sf(meuse.riv))
summary(ST_as.sf(as(meuse.riv, "SpatialLines")))
pol.grd = as(meuse.grid, "SpatialPolygonsDataFrame")
summary(ST_as.sf(pol.grd))
summary(ST_as.sf(as(pol.grd, "SpatialLinesDataFrame")))
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