miscellany to, http://endlesspint.com/

convert_number_ratio.py

# http://stackoverflow.com/questions/929103/convert-a-number-range-to-another-range-maintaining-ratio

def new_value(orig_inputs, new_min, new_max, old_value):
    old_min = min(orig_inputs)
    old_max = max(orig_inputs)
    old_range = old_max - old_min
    new_range = new_max - new_min
    new_value = ((old_value - old_min) * new_range / old_range) + new_min
    return  new_value

import numpy as np

rand_input = np.random.random_integers(5, 2500, 10)
print rand_input

# [1512 1487  764  594 1176 1593 2062 1996 1279   56]

for i in rand_input:
    print i, new_value(rand_input, 0., 1., i)
    
# 1512 0.725822532403
# 1487 0.713359920239
# 764 0.352941176471
# 594 0.268195413759
# 1176 0.558325024925
# 1593 0.766201395813
# 2062 1.0
# 1996 0.967098703888
# 1279 0.609670987039
# 56 0.0