Compute the latitude and longitude coordinates used in Gauss-Legendre quadrature grids.
latglq
, longlq
= GLQGridCoord (lmax
)
latglq
: float, dimension (lmax
+1)
: The latitude coordinates of a grid, corresponding to the indices [:,0], in degrees.
longlq
: float, dimension (2*lmax
+1)
: The longitude coordinates of a grid, corresponding to the indices [0,:], in degrees. The first node is 0 E.
lmax
: integer
: The maximum spherical harmonic degree that will be integrated exactly by Gauss-Legendre quadrature.
GLQGridCoord
will compute the latitude and longitude coordinates that are used in Gauss-Legendre quadrature grids for performing spherical harmonic transforms and reconstructions. The latitudinal nodes correspond to the zeros of the Legendre polynomial of degree lmax+1
, and the longitudinal nodes are equally spaced with an interval of 360/(2*lmax+1)
degrees.