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class for defining a pixels, forming a possibly incomplete rectangular grid of arbitrary dimension

Objects are created by using e.g.

SpatialPixels(points)

with points of class SpatialPoints-class

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

"matrix"

proj4string

Object of class "CRS"; projection

"CRS"

Class "SpatialPoints" directly; Class "Spatial", by class "SpatialPoints".

"SpatialPoints"

"Spatial"

signature(x = "SpatialPixels"): calculates coordinates for each point on the grid; coordinates are not stored in objects of class SpatialGrid

signature(x = "SpatialPixels")

signature(object = "SpatialPixels"): summarize object

signature(object = "SpatialPixels")

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.

drop=FALSE

drop=TRUE

signature(x = "SpatialPixels"): rbind-like method

Edzer Pebesma, edzer.pebesma@uni-muenster.de

SpatialPixelsDataFrame-class, SpatialGrid-class

SpatialPixelsDataFrame-class

SpatialGrid-class

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

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