Algorithm to map an interval to a smaller interval

Question

I tried searching, but due to the nature of my question, I was unable to find something satisfactory.

My problem is the following: I am trying to map numbers ranging fro

Answer 1

Here could be an optimized way to map your x data, This pseudo code shows you the main idea for a map function that:

• Avoid problems with x values out of b1 - b2's range.

• Deals with array mapping

  function map(var x, var b1, var b2, var s1, var s2)
  {
      var i;
      var result;
  
      i = 0;
      while(i < sizeof(s2))
          if(x < b1)
              result[i++] = s1;
          else if (x > b2)
              result[i++] = s2;
          else
              result[i] = (x - b1) / (b2 - b1 ) * (s2[i] - s1[i]) + s1[i++];
      return (result);
  }