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87
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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 generate a random dataset
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6 """
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7
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8 import csv
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9 import random
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10 import sys
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11 from .cli import DatasetGenerationParser
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12
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13
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14 class RandomDataset(object):
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15
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16 def __init__(self, N, D, bounds=(0., 1.)):
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17 assert len(bounds) == 2
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18 self.N = N
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19 self.D = D
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20 self.bounds = bounds
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21 self.length = bounds[-1] - bounds[0]
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22
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23 self.points = [self() for _ in xrange(self.N)]
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24
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25 def translate(self, fraction):
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26 return self.length*fraction + self.bounds[0]
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27
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28 def __call__(self):
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29 """generate one `D`-dimensional point of data"""
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30
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31 return [self.translate(random.random()) for i in xrange(self.D)]
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32
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33
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34 def main(args=sys.argv[1:]):
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35 """CLI"""
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36
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37 # parse command line
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38 parser = DatasetGenerationParser(description=__doc__)
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39 options = parser.parse_args(args)
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40
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41 # make some random points
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42 points = RandomDataset(N=options.number, D=options.dimensions)
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43
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44 # output them
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45 parser.writer().writerows(points.points)
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46
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47
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48 if __name__ == '__main__':
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49 main()
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