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 |
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
Pebesma, E., Cornford, D., Dubois, G., Heuvelink, G.B.M., Hristopulos, D., Pilz, J., Stohlker, U., Morin, G., Skoien, J.O. INTAMAP: The design and implementation of an interoperable automated interpolation Web Service. Computers and Geosciences 37 (3), 2011.
data(meuse.grid)
gridded(meuse.grid) = ~x+y
newMeuseGrid = coarsenGrid(meuse.grid,coarse=2,offset=c(1,1))