This is about data classification done by computer. Data is classified into the A, B, or C rank and then the judgement result will be displayed on the screen. All the transaction is done by using "function x".
This is my attempt to explain the above:
Classify/display data in A/B/C by value x by using the function x
My questions: 1. Is my choice of the preposition "in" before "A/B/C" correct? 2. Does using "by" twice sequentially like this seem bad?