Is there a way to count number of "objects" in a matrix?

Let's say I have a 5x5 matrix of 1s with 2s located at (1,1) and (2,4) and (4,5) or any assortment of points. Am I able to "count" the number of 2s in the matrix full of 1s?

Note the 2s location can vary at any point and is not consistent (can clarify if need be)

Answer 1

[Star Strider]

You question lacks significant clarity, but you can find the total number of ones or twos or any other integer with:

M = randi([0 2],5);                         % Matrix Containing {0,1,2}
Ones = sum(M(:) == 1);
Twos = sum(M(:) == 2);

This works because integers can be represented exactly in binary representation. Non-integer values require that you compare the values using a tolerance value, because decimal fractions cannot be exactly represented as binary floating point numbers.