Class for (irregularly spaced) points
Objects can be created by calls of the form SpatialPoints(x).
coords:Object of class "matrix", containing the
coordinates (each row is a point)
bbox:Object of class "matrix", with bounding box
proj4string:Object of class "CRS", projection string
Class "Spatial", directly.
signature(x = "SpatialPoints"): subsets the points; only
rows (points) can be subsetted
signature(from = "SpatialPoints", to = "data.frame"):
retrieves the data part
signature(from = "SpatialPoints", to = "SpatialPixels"): equivalent to assigning gridded TRUE for a copy of the object
signature(from = "SpatialPointsDataFrame", to = "SpatialPixelsDataFrame"): equivalent to assigning gridded TRUE for a copy of the object
signature(from = "data.frame", to = "SpatialPoints"): sets
coordinates, which may be in a data frame
signature(from = "matrix", to = "SpatialPoints"): set
coordinates, which may be in a matrix
signature(obj = "SpatialPoints"): retrieves
the coordinates, as matrix
signature(x = "SpatialPoints", y = "missing"): plot points
signature(object = "SpatialPoints"): summarize object
signature(x = "SpatialPoints"): add point symbols to plot
signature(object = "SpatialPoints"): prints coordinates
signature(object = "SpatialPoints"): rbind-like method
The plot method for “SpatialPoints” objects takes the following arguments:
object of class SpatialPoints
default 3; either an integer specifying a symbol or a single character to be used as the default in plotting points
default FALSE; a logical value indicating whether both axes should be drawn
default FALSE; add to existing plot
default NULL; the x limits (x1, x2) of the plot
default NULL; the y limits of the plot
passed through
default FALSE; set the par “usr” bounding box, see note in Spatial-class
default 1; numerical value giving the amount by which plotting text and symbols should be magnified relative to the default
default 1; default plotting color
default 1; line width
default 1; colour to be used for the background of the device region
x = c(1,2,3,4,5)
y = c(3,2,5,1,4)
S <- SpatialPoints(cbind(x,y))
S <- SpatialPoints(list(x,y))
S <- SpatialPoints(data.frame(x,y))
S
plot(S)
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