Number scaling

beginners
#1

What is the command to scale numbers? It’s map() in Processing. I need to get data from 0 to 1024 to scale to -1 to 1.

#2

It doesn’t exist right now, except in externals like ofxTodd and ofxProcessing. Try this:

  
  
float ofMap(float x, float lowIn, float highIn, float lowOut, float highOut) {  
	return ((x - lowIn) / (highIn - lowIn)) * (highOut - lowOut) + lowOut;  
}

I’m sure this will find its way into of soon enough. This time of the year, two years ago, it-found-its-way-into-Processing…

#3

Thanks, I was wondering if I have to do it manually. This program is going to get rather function heavy then. :frowning: The joys of translating accelerometer data.

#4

wow kyle, so its almost thanks to you we have it in processing! :stuck_out_tongue:

#5

[quote author=“memo”]wow kyle, so its almost thanks to you we have it in processing! :slight_smile: