How can I find the sum of an array with the minimum value excluded?

for e.g A = [16 21 54 32 87 12];

I would like to calculate the sum of the array excluding the lowest value, 12.

Answer 1

[Image Analyst]

You can use masking. Simply find the elements that are not the min and sum all of them. Here is the code:

% Vector
A = [16 21 54 32 87 12 100 12 55 12]
minA = min(A(:))
mask = A ~= minA
theSum = sum(A(mask))

It also works for any dimension of array. Here it is for a matrix:

% Matrix
A = [16 21 54 32 87; 12 100 12 55 12]
mask = A ~= min(A(:))
theSum = sum(A(mask))

This code works even if the min occurs more than once (unlike Stephan's answer).

[Stephan]

Nice

Answer 2

[Stephan]

A = [16 21 54 32 87 12]
B = sum(A) - min(A)

If A is a matrix use:

A = [16 21 54; 32 87 12]
B = sum(sum(A)) - min(min(A))

Best regards

Stephan

[Steven Lord]

If you're using release R2018b or later, use sum(A, 'all')-min(A, 'all') and you don't need to worry about whether A is a vector, matrix, or N-dimensional array.

[Stephan]

Very nice feature!