hi guys!
i have a list of numbers that i was to rescale to 0.0 -> 1.0
eg for (6,4,8) i want to convert to (0.5, 0.0, 1.0)
i can find the min/max...
grunt> numbers = load 'numbers' as (n:int);
grunt> dump numbers;
(6)
(4)
(8)
grunt> all_numbers = group numbers all;
grunt> min_max = foreach all_numbers { generate MIN(numbers.n) as min,
MAX(numbers.n) as max; }
grunt> dump min_max;
(4,8)
...and given the min max i can rescale the list
grunt> rescaled_numbers = foreach numbers { generate
((float)n-4F)/(8F-4F); }
grunt> dump rescaled_numbers;
(0.5F)
(0.0F)
(1.0F)
but how do i inject the values found during min_max into the
rescaled_numbers foreach clause?
perhaps i'm thinking about this totally the wrong way?
help me obi-wan kenobi, you're my only hope
mat
