Extract elements x from array for which a<x<=b

Question

I'm trying to do a rather simple operation, which I somehow fail to successfully perform. What I have is an array (array0) of values, say 1000 of them, all between 0 and 10. Now what I want to do is create three separate arrays:

array1 = all elements of array0 that are equal to 3 or smaller array 2 = all elements from array0 that are larger than 3 but equal to or smaller than 7 array 3 = all elements from array0 that are larger than 7

Now, array1 and array3 work just fine. I use

array1= array0(array0<=3);
array3= array0(array0>7);

But array 2 is a problem. The 'logical' thing for me is to try

array2= array0(3<array0<=7);

But this doesn't work, it just gives me an empty array. It doesn't give an error though. Could anyone help me find the flaw in my code?

Answer 1

You need to use a logical "and" operator like this:

array2= array0(array0>3 & array0<=7);

similar to how you might say it in English, A is greater than 3 AND less than or equal to 7.