Is there a simpler way to count the number of elements of a vector that is equal to a given number?

I have a vector v and a number a. I want to count the number of elements in v that is equal to a. What is a simpler way to do this?

Answer 1

[Walter Roberson]

nnz(v == a)

You will probably also see

sum(v == a)

The nnz() version works for multidimensional arrays as well, whereas the sum() version would count along the first non-scalar dimension.

[alpedhuez]

Thank you. Let me work on it.

[Image Analyst]

If they're floating point values that are not integers or a power of 2, then you might need to use ismembertol() to do the comparison.

[alpedhuez]

Thank you. But

https://www.mathworks.com/help/matlab/ref/nnz.html

says nnz works for single, double, and others?