Mercurial > repos > public > sbplib
comparison findZeros.m @ 306:8368beb0d1b3 feature/beams
Added function to calculate multiple solutions to an equation.
| author | Jonatan Werpers <jonatan@werpers.com> |
|---|---|
| date | Thu, 22 Sep 2016 09:34:27 +0200 |
| parents | |
| children |
comparison
equal
deleted
inserted
replaced
| 305:dfa4455033db | 306:8368beb0d1b3 |
|---|---|
| 1 % findZeros looks for solutions to the equation f(x)==0 within | |
| 2 % the limits lim with a granularity of h. | |
| 3 % Returns a sorted list of unique solutions. | |
| 4 function z = findZeros(f, lim, h) | |
| 5 n = ceil((lim(2)-lim(1))/h); | |
| 6 z0 = linspace(lim(1), lim(2), n); | |
| 7 | |
| 8 z = zeros(1,n); | |
| 9 | |
| 10 for i = 1:n | |
| 11 zt(i) = fzero(f, z0(i)); | |
| 12 end | |
| 13 | |
| 14 zt = sort(zt); | |
| 15 | |
| 16 z = []; | |
| 17 for i = 1:n | |
| 18 if zt(i) < lim(1) || zt(i) > lim(2) | |
| 19 continue | |
| 20 end | |
| 21 | |
| 22 if ~isempty(z) && abs(z(end) - zt(i)) < 1e-6 | |
| 23 continue | |
| 24 end | |
| 25 | |
| 26 z = [z zt(i)]; | |
| 27 end | |
| 28 | |
| 29 % z = unique(z); | |
| 30 end |