Difference between revisions of "Shrewd.m"
| Line 1: | Line 1: | ||
| − | {{DISPLAYTITLE: | + | {{DISPLAYTITLE:shrewd.m}} __NOTOC__ |
Computes SHREWD weights for a given two- or three-angle spherical grid. See the paper by Eden and Levitt for details on now the algorithm works: http://dx.doi.org/10.1006/jmre.1998.1427 | Computes SHREWD weights for a given two- or three-angle spherical grid. See the paper by Eden and Levitt for details on now the algorithm works: http://dx.doi.org/10.1006/jmre.1998.1427 | ||
Revision as of 20:15, 29 June 2021
Computes SHREWD weights for a given two- or three-angle spherical grid. See the paper by Eden and Levitt for details on now the algorithm works: http://dx.doi.org/10.1006/jmre.1998.1427
Syntax
weights=shrewd(alphas,betas,gammas,max_rank,max_error)
Arguments
alphas - alpha Euler angles (ZYZ active) of the
grid, in radians
betas - beta Euler angles (ZYZ active) of the
grid, in radians
gammas - gamma Euler angles (ZYZ active) of the
grid,in radians, set to all-zeros for
two-angle grids
max_rank - maximum spherical rank to take into consi-
deration when minimizing residuals
max_error - maximum residual absolute error per spheri-
cal function
Outputs
weights - a vector of grid weights for each
[alpha beta gamma] point supplied.
See also
Integration grids, Appendix I: powder grids
Version 2.6, authors: Ilya Kuprov
