| HOME | DOWNLOAD | DOCUMENTATION | FAQ |
> Home > Documentation > Python > Spherical Harmonic Transformations
GLQGridCoord
Compute the latitude and longitude coordinates used in Gauss-Legendre quadrature grids.
Usage
latglq, longlq = GLQGridCoord (lmax)
Returns
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.
Parameters
lmax: integer- The maximum spherical harmonic degree that will be integrated exactly by Gauss-Legendre quadrature.
Description
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.
See also
shglq, shexpandglq, makegridglq, shexpandglqc, makegridglqc
> Home > Documentation > Python > Spherical Harmonic Transformations
| Laboratoire Lagrange | Observatoire de la Côte d'Azur | © 2017 SHTOOLS |