Description Usage Arguments Value References See Also
Function to create a biorthogonal grid using the thin-plate solution;
the grid object created can be used with the draw
function to plot the grid.
1 |
start |
coordinates of the starting point to create the grid - usually near the center of region |
xmat |
n x 2 matrix containing xy coordinates of locations |
coef |
coefficients of the thin-plate solution, for instance as returned by
|
xlimt |
vector of 4 elements, representing x- and y-ranges for the grid to
be created; if not provided, the ranges of |
iter.limit |
limit of iterations |
perpc |
parameter to control spacing of the grid |
A list with following named components:
grid |
coordinates of points in the grid |
ngrid |
number of points in the grid |
fldmag |
the “gradient” index (see Sampson and Guttorp, 1992, for details) |
nn |
internally set for the maximum number of grid points allowed |
Sampson P.D., and Guttorp, P., "Nonparametric estimation of nonstationary spatial covariance structure", in Journal of the American Statistical Association, vol 87, pp 108-119, 1992.
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.