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annotate +util/get_periodic_grid.m @ 1337:bf2554f1825d feature/D2_boundary_opt

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Add periodic D1 and D2 operators for orders 8,10,12
author Vidar Stiernström <vidar.stiernstrom@it.uu.se>
date Fri, 13 May 2022 13:28:10 +0200
parents 0666629aa183
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1336
0666629aa183 Add methods for creating grids with different grid point distributions for each coordinate direction, and also supports constructing periodic grids
Vidar Stiernström <vidar.stiernstrom@it.uu.se>
parents:
diff changeset
1 % Returns the 1D periodic grid where the last grid point at x_r
0666629aa183 Add methods for creating grids with different grid point distributions for each coordinate direction, and also supports constructing periodic grids
Vidar Stiernström <vidar.stiernstrom@it.uu.se>
parents:
diff changeset
2 % is omitted (it is the same as the the first grid point at x_l)
0666629aa183 Add methods for creating grids with different grid point distributions for each coordinate direction, and also supports constructing periodic grids
Vidar Stiernström <vidar.stiernstrom@it.uu.se>
parents:
diff changeset
3 function [x,h] = get_periodic_grid(x_l,x_r,m)
0666629aa183 Add methods for creating grids with different grid point distributions for each coordinate direction, and also supports constructing periodic grids
Vidar Stiernström <vidar.stiernstrom@it.uu.se>
parents:
diff changeset
4 L = x_r-x_l;
0666629aa183 Add methods for creating grids with different grid point distributions for each coordinate direction, and also supports constructing periodic grids
Vidar Stiernström <vidar.stiernstrom@it.uu.se>
parents:
diff changeset
5 h = L/m;
0666629aa183 Add methods for creating grids with different grid point distributions for each coordinate direction, and also supports constructing periodic grids
Vidar Stiernström <vidar.stiernstrom@it.uu.se>
parents:
diff changeset
6 x = linspace(x_l,x_r,m+1)';
0666629aa183 Add methods for creating grids with different grid point distributions for each coordinate direction, and also supports constructing periodic grids
Vidar Stiernström <vidar.stiernstrom@it.uu.se>
parents:
diff changeset
7 x = x(1:end-1);
0666629aa183 Add methods for creating grids with different grid point distributions for each coordinate direction, and also supports constructing periodic grids
Vidar Stiernström <vidar.stiernstrom@it.uu.se>
parents:
diff changeset
8 end