How do I select the minimum value from the first column based on the corresponding value in the second column?

13 vues (au cours des 30 derniers jours)
I have data in two columns as shown below.
I want to find the minimum value in column one but the minimum function should only consider values in the 1st column, whose corresponding value in the 2nd column is a 0.
So in the above 8 rows the minimum value would be 3 since the minimum function would only look at 3,5,7,76.
How can achieve this?

Réponse acceptée

KSSV
KSSV le 17 Fév 2022
Let A be your data.
A = [1 1; 22 1; 3 0 ; 5 0; 60 1; 76 0; 7 0; 12 0] ;
iwant = min(A(A(:,2)==0,1))
iwant = 3

Plus de réponses (1)

Sajid Afaque
Sajid Afaque le 17 Fév 2022
Modifié(e) : Sajid Afaque le 17 Fév 2022
use the below workaround
%variable
var = [[1;22;3;5;60;76;7;12] [1;1;0;0;1;0;0;1]];
%select only the portion which has second column entries as zeroes
var1 = var(find(var(:,2) == 0),:);
%now apply the min function
min_value = min(var1(:,1));
same in one line
%
min_value = min(var(find(var(:,2) == 0),1))

Catégories

En savoir plus sur Large Files and Big Data dans Help Center et File Exchange

Tags

Produits


Version

R2021b

Community Treasure Hunt

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

Start Hunting!

Translated by