Scale a number into a defined range


/ Published in: Ruby
Save to your folder(s)

Scales a number from a given range into a specific range, as explained [in this Stack Overflow](http://stackoverflow.com/questions/5294955/how-to-scale-down-a-range-of-numbers-with-a-known-min-and-max-value) post.

Just call it, for example like:

0.5.scale_between(0, 1, 100, 200)

The result would be `150`.


Copy this code and paste it in your HTML
  1. class Numeric
  2. def scale_between(from_min, from_max, to_min, to_max)
  3. ((to_max - to_min) * (self - from_min)) / (from_max - from_min) + to_min
  4. end
  5. end

Report this snippet


Comments

RSS Icon Subscribe to comments

You need to login to post a comment.