Question

I need to translate a value in the range 1-320 to it’s equivalent value within the spread in the range 500-2500, and I need to do it in VBScript.

Is there a function similar to map() that can do this for me? I can’t include any external libraries in this particular use case.

Answer 1

You mean you want to convert any number between 1 and 320 to its corresponding number between 500 and 2500 such that 1 corresponds to 500 and 320 corresponds to 2500?

If so, you can do it as follows: Let x be your original number (between 1 and 320) and y be the target number (between 500 and 2500):

y = ((x-1)/319) * 2000 + 500

In general, if you have a range a1 to a2 and want to convert it to range b1 to b2 using

y = ((x - a1)/(a2 - a1)) * (b2 - b1) + b1