sp: SpatialPixels-class – R documentation

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SpatialPixels-class

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

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

sp

Classes and Methods for Spatial Data

v1.4-5

GPL (>= 2)

Authors

Edzer Pebesma [aut, cre], Roger Bivand [aut], Barry Rowlingson [ctb], Virgilio Gomez-Rubio [ctb], Robert Hijmans [ctb], Michael Sumner [ctb], Don MacQueen [ctb], Jim Lemon [ctb], Finn Lindgren [ctb], Josh O'Brien [ctb], Joseph O'Rourke [ctb]

Initial release