change data.frame to SpatialPointsDataFrame
This function modifies an object of class data.frame to one of class SpatialPointsDataFrame
DF2SpatialPointsDataFrame(x, coords = c("x", "y"),
crs = sp::CRS("+init=epsg:28992"))x |
data frame to be converted |
coords |
which columns are coordinates |
crs |
projection scheme |
the new object of class SpatialPointsDataFrame
Markus Loecher
if (requireNamespace("sp", quietly = TRUE)) {
data("meuse", package = "sp", envir = environment())
meuseSP = DF2SpatialPointsDataFrame(meuse)
sp::plot(meuseSP, asp = 1, cex = 4 * meuse$zinc/max(meuse$zinc),
pch = 1, col = as.numeric(meuse$ffreq)+1 )
data("meuse.riv", package = "sp", envir = environment())
lines(meuse.riv)
} else {
print("package sp must be installed for this example")
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