xyFromCell

0th

Percentile

Coordinates from a row, column or cell number

These functions get coordinates of the center of raster cells for a row, column, or cell number of a Raster* object.

Keywords
spatial
Usage
# S4 method for Raster,numeric
xFromCol(object, col)
# S4 method for Raster,numeric
yFromRow(object, row)
# S4 method for Raster,numeric
xFromCell(object, cell)
# S4 method for Raster,numeric
yFromCell(object, cell)
# S4 method for BasicRaster,ANY
xyFromCell(object, cell, spatial=FALSE, ...)
# S4 method for Raster
coordinates(obj, ...)
Arguments
object

Raster* object (or a SpatialPixels* or SpatialGrid* object)

col

column number; or vector of column numbers. If missing, the x coordinates for all columns are returned

row

row number; or vector of row numbers. If missing, the y coordinates for all rows are returned

cell

cell number(s)

spatial

If spatial=TRUE, xyFromCell returns a SpatialPoints object instead of a matrix

...

additional arguments. None implemented

obj

Raster object

Details

Cell numbers start at 1 in the upper left corner, and increase from left to right, and then from top to bottom. The last cell number equals the number of cells of the Raster* object.

Value

xFromCol, yFromCol, xFromCell, yFromCell: vector of x or y coordinates

xyFromCell: matrix(x,y) with coordinate pairs

coordinates: xy coordinates for all cells

See Also

cellFromXY

Aliases
  • xFromCol
  • xFromCol,Raster,numeric-method
  • xFromCol,Raster,missing-method
  • yFromRow
  • yFromRow,Raster,numeric-method
  • yFromRow,Raster,missing-method
  • xFromCell
  • xFromCell,Raster,numeric-method
  • yFromCell
  • yFromCell,Raster,numeric-method
  • xyFromCell
  • xyFromCell,BasicRaster-method
  • xyFromCell,BasicRaster,ANY-method
  • xyFromCell,Raster-method
  • xyFromCell,Raster-method
  • coordinates
  • coordinates,Raster-method
Examples
# NOT RUN {
#using a new default raster (1 degree global)
r <- raster()
xFromCol(r, c(1, 120, 180))
yFromRow(r, 90)
xyFromCell(r, 10000)
xyFromCell(r, c(0, 1, 32581, ncell(r), ncell(r)+1))

#using a file from disk
r <- raster(system.file("external/test.grd", package="raster"))
r
cellFromXY(r, c(180000, 330000))
#xy for corners of a raster:
xyFromCell(r, c(1, ncol(r), ncell(r)-ncol(r)+1, ncell(r)))
# }
Documentation reproduced from package raster, version 3.0-12, License: GPL (>= 3)

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