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161
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1 #!/usr/bin/env python
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2 # -*- coding: utf-8 -*-
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3
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4 """
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5 normalize columns
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6 """
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7
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8 # imports
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9 import sys
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164
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10 from .convert import numeric
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11 from .data import transpose
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163
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12 from .manipulate import ManipulationParser
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161
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13
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14 # module globals
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164
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15 __all__ = ['normalize', 'NormalizationParser']
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16
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17 def normalize(*data):
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18 """normalize data"""
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19 norm = float(sum(data))
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20 return [i/norm for i in data]
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161
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21
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163
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22 class NormalizationParser(ManipulationParser):
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161
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23 """CLI option parser"""
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24
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25
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26 def main(args=sys.argv[1:]):
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27 """CLI"""
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28
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29 # parse command line options
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163
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30 parser = NormalizationParser()
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161
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31 options = parser.parse_args(args)
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32
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164
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33 # get columns
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34 columns = parser.typed_data()
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35 for index in range(len(columns)):
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36 column = columns[index]
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37 if column and isinstance(column[0], numeric):
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38 columns[index] = normalize(*column)
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39
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40 # output
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41 parser.write(transpose(columns))
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161
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42
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43 if __name__ == '__main__':
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44 main()
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45
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46
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