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Versions: 26
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Contents
#!/usr/bin/env ruby
# encoding: utf-8
require 'optparse'
@configuration = {}
@configuration[:scale_min] = 0
@configuration[:scale_max] = 10
OptionParser.new do |opts|
opts.banner = "USAGE: #{File.basename($0)} [OPTIONS]"
help_string = 'Minimun value for future scaling normalization.'
opts.on('-i', '--min [N]', OptionParser::DecimalInteger, help_string) do |value|
@configuration[:scale_min] = value
end
help_string = 'Maximum value for future scaling normalization.'
opts.on('-a', '--max [N]', OptionParser::DecimalInteger, help_string) do |value|
@configuration[:scale_max] = value
end
opts.on('--extra') do |value|
puts "Normalizes numeric data, expects two columns from STDIN:"
puts "key and value, key is a string without spaces, value is a number."
puts "Original data will printed and suffixed by their corresponding normalized values."
exit 0
end
end.parse!
$stdin.sync = true
sample = { }
STDIN.each do |line|
key, value = line.split(/\s+/)
sample[key] ||= {}
sample[key][:data] ||= []
if sample[key][:total]
sample[key][:total] += value.to_f
else
sample[key][:total] = value.to_f
end
sample[key][:data] << value.to_f
end
class Array
# Future Scaling
def normalize(scale_min, scale_max)
map do |number|
divisor = (number - min) * (scale_max - scale_min)
dividend = max - min
divisor / dividend
end
end
end
sample.keys.each do |key|
normalized = sample[key][:data].normalize(@configuration[:scale_min], @configuration[:scale_max])
sample[key][:data].size.times do |needle|
puts "#{key} #{sample[key][:data][needle]} #{normalized[needle]} "
end
end
Version data entries
26 entries across 26 versions & 1 rubygems