coarsenGrid {intamap} | R Documentation |
coarsenGrid
is a function that resamples a SpatialGridDataFrame.
coarsenGrid(object,coarse=2,offset = sample(c(0:(coarse-1)),2,replace=TRUE))
object |
a SpatialGridDataFrame or gridded
SpatialPixelsDataFrame |
coarse |
an integer telling how much the grid should be coarsened |
offset |
integer giving the relative offset of the first point, see details below for a closer description |
The function coarsenGrid
is a function that samples from a
SpatialGridDataFrame
.
The argument coarse
indicates that every coarse
row and column will
be sampled, starting with the row and column represented in offset
. offset = c(0,0)
implies that the smallest x- and y-coordinates will be a part of the resampled
data set, offset = c(1,1) implies that sampling will start on the second row and column.
Jon Olav Skoien
data(meuse.grid) gridded(meuse.grid) = ~x+y newMeuseGrid = coarsenGrid(meuse.grid,coarse=2,offset=c(1,1))