Extract covariate grid cell

Extract covariate grid cell

gridCell(loc, xgrid, ygrid, covmat)

Arguments

loc	Location
xgrid	Grid along x axis
ygrid	Grid along y axis
covmat	Covariate values on (xgrid,ygrid)

Value

List of two elements: coords (coordinates of bottom-left and top-right corners of the grid cell), and values (values of the covariate at the four corners of the grid cell).