In MATLAB, you can find all elements of an array satisfying a condition using logical indexing.
Suppose you have an array x with random values:
x = [2, 8, 4, 6, 9, 3, 1, 7];
Now, let's say you want to find all the elements of x that are greater than or equal to 5. You can create a logical expression using the comparison operator >= and assign the result to a variable or use it directly to index the array:
% Storing the result in a variable
condition = x >= 5;
result = x(condition);
% Using logical indexing directly
result = x(x >= 5);
Both approaches will return an array with the values 8, 6, 9, 7, which are the elements of x satisfying the condition.
You can also use logical indexing with multiple conditions. For example, let's find all the elements of x that are greater than 3 and less than or equal to 7:
result = x(x > 3 & x <= 7);
The result will be an array with the values 4, 6, 7.
Remember that logical indexing returns a copy of the original array, not a view. Therefore, any changes you make to the result array will not affect the original one.