nearest.raster.point: Find Pixel Nearest to a Given Point
Description
Given cartesian coordinates, find the nearest pixel.
Usage
nearest.raster.point(x,y,w)
Arguments
x
Numeric vector of $x$ coordinates of any points
y
Numeric vector of $y$ coordinates of any points
w
A window (an object of class "owin")
of type "mask" representing a binary pixel image.
Value
List containing two vectors rr and cc
giving row and column positions (in the image matrix).
Details
The argument w should be a window (an object of class
"owin", see owin.object for details).
A window of type "mask" represents a binary pixel image.
This function returns a list containing two vectors rr and
cc giving row and column positions (in the image matrix).
For the location (x[i],y[i]) the nearest
pixel is at row rr[i] and column cc[i] of
the image.