# grid_trian.m

Triangular spherical quadrature grids, as per Appendix A.6 of (http://dx.doi.org/10.1016/j.jmr.2014.05.009).

## Syntax

[alps,bets,gams,whts,vorn]=grid_trian(type,n)

## Arguments

type - 'asg', 'sophe', or 'stoll' n - point count parameter

## Outputs

alps - alpha Euler angles of the grid (radians), zeros because these are two-angle grids bets - beta Euler angles of the grid (radians) gams - gamma Euler angles of the grid (radians) whts - Voronoi tessellation body angle weights vorn - a cell array of matrices containing the coordinates of the vertices of the Voro- noi polyhedra

## Examples

Below is the figure produced by grid_trian('stoll',10).

## Notes

If no outputs are requested, a schematic is drawn.

## See also

Integration grids, Appendix I: powder grids

*Version 2.6, authors: Ilya Kuprov*