Mercurial > repos > public > sbplib

annotate alignedTimestep.m @ 86:3c39dd714fb6

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
In Curve: Added numerical FD differentiation if derivative is not supplied. Added arc length computation based on the derivative. Added arc length parameterization (but this function is very slow.). In +util: Added fzero_vec.m and integral_vec.m, which call fzero and integral but take vector arguments.
author Martin Almquist <martin.almquist@it.uu.se>
date Sun, 29 Nov 2015 14:28:53 +0100
parents c71095442c57
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
12
c71095442c57 Added function to calculate an aligned timestep.
Jonatan Werpers <jonatan@werpers.com>
parents:
diff changeset
1 % Calcualtes the largest timestep smaller than k_max that gives an integer
c71095442c57 Added function to calculate an aligned timestep.
Jonatan Werpers <jonatan@werpers.com>
parents:
diff changeset
2 % number of timesteps to time T.
c71095442c57 Added function to calculate an aligned timestep.
Jonatan Werpers <jonatan@werpers.com>
parents:
diff changeset
3 % k_max -- largest allowable timestep
c71095442c57 Added function to calculate an aligned timestep.
Jonatan Werpers <jonatan@werpers.com>
parents:
diff changeset
4 % T -- time to align with
c71095442c57 Added function to calculate an aligned timestep.
Jonatan Werpers <jonatan@werpers.com>
parents:
diff changeset
5 %
c71095442c57 Added function to calculate an aligned timestep.
Jonatan Werpers <jonatan@werpers.com>
parents:
diff changeset
6 % Returns:
c71095442c57 Added function to calculate an aligned timestep.
Jonatan Werpers <jonatan@werpers.com>
parents:
diff changeset
7 % k -- calculated timestep
c71095442c57 Added function to calculate an aligned timestep.
Jonatan Werpers <jonatan@werpers.com>
parents:
diff changeset
8 % N -- number to of timestep to reach T
c71095442c57 Added function to calculate an aligned timestep.
Jonatan Werpers <jonatan@werpers.com>
parents:
diff changeset
9 function [k, N] = alignedTimestep(k_max, T)
c71095442c57 Added function to calculate an aligned timestep.
Jonatan Werpers <jonatan@werpers.com>
parents:
diff changeset
10 N = ceil(T/k_max);
c71095442c57 Added function to calculate an aligned timestep.
Jonatan Werpers <jonatan@werpers.com>
parents:
diff changeset
11 k = T/N;
c71095442c57 Added function to calculate an aligned timestep.
Jonatan Werpers <jonatan@werpers.com>
parents:
diff changeset
12 end