| coordinates {sp} | R Documentation |
sets spatial coordinates to create spatial data, or retrieves spatial coordinates
coordinates(obj)
coordinates(object) <- value
obj |
object deriving from class "Spatial" |
object |
object of class "data.frame" |
value |
spatial coordinates; either a matrix, list, or data
frame with numeric data, or column names, column number or a
reference: a formula (in the form of e.g. ~x+y), column numbers
(e.g. c(1,2)) or column names (e.g. c("x","y")) specifying
which columns in object are the spatial coordinates. If the coordinates
are part of object, giving the reference does not duplicate them, giving
their value does duplicate them in the resulting structure.
|
an object of class SpatialPointsDataFrame
# data.frame data(meuse.grid) coordinates(meuse.grid) <- ~x+y gridded(meuse.grid) <- TRUE bbox(meuse.grid)