Unable to plot inequality region
2 vues (au cours des 30 derniers jours)
Afficher commentaires plus anciens
This is the solution I am trying to mimic, but for my case it does not seem to work:
syms ki kd
cond = [ -9*ki, 10*ki - 10*kd + 10, 360*kd - 24*ki + 1320]; % My 3 inequality conditions
r = -5:0.01:5;
[ki, kd] = meshgrid(r);
condition1 = cond(1) > 0;
condition2 = cond(2) > 0;
condition3 = cond(3) > 0;
output = ones(length(r));
output(~(condition1 & condition2 & condition3)) = 0; % this fails
imshow(output, 'xdata', r, 'ydata', r);
axis on;
the line that fails gives me this error:
Error using symengine
Unable to prove '~0 < -9*ki | ~0 < 10*ki - 10*kd + 10 |
~0 < 360*kd - 24*ki + 1320' literally. Use 'isAlways' to
test the statement mathematically.
Error in sym/subsindex (line 841)
X =
find(mupadmex('symobj::logical',A.s,9)) -
1;
How can I solve this? It seems like it should be such a simple thing to do, but I can't make it work.
0 commentaires
Réponse acceptée
KSSV
le 18 Juin 2022
Modifié(e) : KSSV
le 18 Juin 2022
r = -5:0.01:5;
[ki, kd] = meshgrid(r);
cond = -9*ki>0 & 10*ki - 10*kd + 10>0 & 360*kd - 24*ki + 1320>0; % My 3 inequality conditions
% output = ones(length(r));
% output(~(condition1 & condition2 & condition3)) = 0; % this fails
imshow(cond, 'xdata', r, 'ydata', r);
axis on;
3 commentaires
Plus de réponses (0)
Voir également
Catégories
En savoir plus sur Assumptions dans Help Center et File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!