What is result of x = min(A(:));

9 views (last 30 days)
Richard Johnston
Richard Johnston on 6 Feb 2015
Commented: Stephen23 on 6 Feb 2015
I am looking at result of a program and value result do not look right Looking at code ( can't run test to check right now)
If (min(e(:) <= 5)
Z = 1
Answer seem to set a=0 There are 26 elements in the array with a value <= 5 So I am wondering is if the results z is 26 or is it equal the lowest value in the array?
  1 Comment
Stephen23 on 6 Feb 2015
This results in an error actually, due to unmatched parentheses in the first line: (min(e(:) <= 5). Until you show us exactly where the parentheses are, any answer is going to be meaningless.

Sign in to comment.

Answers (2)

Alex Taylor
Alex Taylor on 6 Feb 2015
The result of
A = [4 5; 8 7];
x = min(A(:))
x =
This is because any matrix in MATLAB can be linearly indexed from 1 to the total number of elements in the matrix. So, the operation A(:) reshapes A into an Nx1 vector, then the min operation scans from the first element to the last element of the N element vector ooking for the minimum.

Scott Webster
Scott Webster on 6 Feb 2015
Not sure if part of your confusion is your "order of operations" i.e. the difference between min(e)<5 and min(e<5)... Here is some demo code...
>> A=1:5
A =
1 2 3 4 5
>> min(A)
ans =
>> A<=3
ans =
1 1 1 0 0
>> min(A<=3)
ans =


Find more on Resizing and Reshaping Matrices in Help Center and File Exchange


Community Treasure Hunt

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

Start Hunting!

Translated by