How do I refer to values that contain decimal points and integers (for example, 1.0000 ... and 1)?

1 vue (au cours des 30 derniers jours)
I want to take out the row in which the first column of the cell array b (above image) is 1 (including 1.0000) and put it into the cell array a.
When I wrote the code like this, I can only get the integer 1.
a = b(cellfun(@(x) x == 1, b(:,1)),:);
How do I get 1.0000 rows too?
  1 commentaire
Stephen23
Stephen23 le 22 Sep 2021
Modifié(e) : Stephen23 le 22 Sep 2021
"I want to take out the row in which the first column of the cell array b (above image) is 1 (including 1.0000)"
Your code matches values exactly equal to one (as indicated by "1").
But "1.0000" indicates a value that it is not exactly one.
If you want to include vaues that are not quite equal to one (such as those indicated by "1.0000") then you will have to include a tolerance in your value comparison. You will have to decide how much tolerance is acceptable.
A more efficient approach than CELLFUN:
tol = 1e-10;
idx = [b{:,1}] < tol;
out = b(idx,;)

Connectez-vous pour commenter.

Réponse acceptée

Chunru
Chunru le 22 Sep 2021
a = b(cellfun(@(x) abs(x -1 ) <1e-10, b(:,1)),:);

Plus de réponses (0)

Catégories

En savoir plus sur Logical dans Help Center et File Exchange

Produits


Version

R2020b

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by