Last data update: 2014.03.03
R: Class "SpatialPixels"
SpatialPixels-class R Documentation
Class "SpatialPixels"
Description
class for defining a pixels, forming a
possibly incomplete rectangular grid of arbitrary dimension
Objects from the Class
Objects are created by using e.g.
SpatialPixels(points)
with points of class SpatialPoints-class
Slots
grid
object of class GridTopology-class, defining the
grid topology (offset, cellsize, dim)
grid.index
integer; index of points in full grid
coords
coordinates of points, or bbox of grid
bbox
:Object of class "matrix"
; bounding box
proj4string
:Object of class "CRS"
; projection
Extends
Class "SpatialPoints"
directly;
Class "Spatial"
, by class "SpatialPoints"
.
Methods
coordinates signature(x = "SpatialPixels")
: calculates coordinates for
each point on the grid; coordinates are not stored in objects of class SpatialGrid
summary signature(object = "SpatialPixels")
: summarize object
plot signature(x = "SpatialPixels")
: plots cell centers
"[" signature(x = "SpatialPixels")
: select pixel cells; the argument
drop=FALSE
(default) does not recalculate grid topology for the selection, if
drop=TRUE
the grid topology is recomputed, and might change.
rbind signature(x = "SpatialPixels")
: rbind-like method
Author(s)
Edzer Pebesma, edzer.pebesma@uni-muenster.de
See Also
SpatialPixelsDataFrame-class
, SpatialGrid-class
Examples
data(meuse.grid)
pts = meuse.grid[c("x", "y")]
y = SpatialPixels(SpatialPoints(pts))
class(y)
y
summary(y)
plot(y) # plots grid
plot(y, grid = FALSE) # plots points
Results