Convert numbers into engineering notation.
# Type your text h# -*- coding: utf-8 -*- """ Created on Wed Aug 08 15:49:13 2012 @author: Cambium """ from math import * def powerise10(x): """ Returns x as a * 10 ^ b with 0<= a <10 """ if x == 0: return 0 , 0 Neg = x <0 if Neg : x = -x a = 1.0 * x / 10**(floor(log10(x))) b = int(floor(log10(x))) if Neg : a = -a return a ,b def eng(x): """Return a string representing x in an engineer friendly notation""" a , b = powerise10(x) if -3<b<3: return "%.4g" % x a = a * 10**(b%3) b = b - b%3 return "%.4g*10^%s" %(a,b)