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| author | Eugeniy Mikhailov <evgmik@gmail.com> | 2009-12-22 21:48:01 +0000 |
|---|---|---|
| committer | Eugeniy Mikhailov <evgmik@gmail.com> | 2009-12-22 21:48:01 +0000 |
| commit | 539cde27dee1cd9721a4684f815883b44464170c (patch) | |
| tree | 5ca701e9fff2226e7cd948a58126c985fcdfab05 /basis_transformation.m | |
| parent | 13234166dcaee5760c72af6658a76eb319bd2af6 (diff) | |
| download | multi_mode_eit-539cde27dee1cd9721a4684f815883b44464170c.tar.gz multi_mode_eit-539cde27dee1cd9721a4684f815883b44464170c.zip | |
added basis transformation file
Diffstat (limited to 'basis_transformation.m')
| -rw-r--r-- | basis_transformation.m | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/basis_transformation.m b/basis_transformation.m new file mode 100644 index 0000000..01c3202 --- /dev/null +++ b/basis_transformation.m @@ -0,0 +1,28 @@ +1; + +% matrix of circular to linear transformation +% [x, l, z]' = lin2circ * [r, l, z]' +circ2lin= [ ... + [ 1/sqrt(2), 1/sqrt(2), 0]; ... + [-1i/sqrt(2), 1i/sqrt(2), 0]; ... + [ 0, 0, 1] ... + ]; + +% matrix of linear to circular transformation +% [r, l, z]' = lin2circ * [x, y, z]' +lin2circ=inverse(circ2lin); + +% linear basis rotation +% x axis untouched +% z and y rotated by angle theta around 'x' axis +% [x_new, y_new, z_new]' = oldlin2newlin * [x_old, y_old, z_old]' +function coord_new = oldlin2newlin(coord_old, theta) + oldlin2newlin_m = [ ... + [ 1, 0, 0]; ... + [ 0, cos(theta), -sin(theta)]; ... + [ 0, sin(theta), cos(theta)]... + ]; + coord_new = oldlin2newlin_m * coord_old; +endfunction + +% vim: ts=2:sw=2:fdm=indent |