eigenQsphere: Generate eigenvalues of precision matrix Q on the surface of...
| eigenQsphere | R Documentation |
Generate eigenvalues of precision matrix Q on the surface of a sphere.
Description
The eigenvalues of the precision matrix Q with dimension (mm, nn)
and polar angle limits phimin, phimax are calculated.
Usage
eigenQsphere(phimin, phimax, mm, nn)
Arguments
phimin |
Polar angle minimum. |
phimax |
Polar angle maximum. |
mm |
Number of rows of precision matrix Q. |
nn |
Number of columns of precision matrix Q. |
Details
The corresponding function for data on a grid is eigenLaplace.
Value
A list containing 2 elements:
eigval Row vector containing the eigenvalues of Q.
eigvec Matrix containing the eigenvectors of Q as columns.
Examples
eig_out <- eigenQsphere(phimin = 180/10, phimax = 180 - 180/10, mm = 10, nn = 20)
