Mercurial > hg > GlobalNeighbors

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[knn] placeholder for planning session
author Jeff Hammel <k0scist@gmail.com>
date Sun, 17 Sep 2017 14:35:50 -0700
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1 #!/usr/bin/env python
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2
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3 """
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4 test date integrity; ensure we know what
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5 data we're dealing with
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6 """
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7
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8 import os
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9 import unittest
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10 from globalneighbors.locations import locations
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11 from globalneighbors.read import read_cities
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12 from globalneighbors.schema import primary_key
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13
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14 here = os.path.dirname(os.path.abspath(__file__))
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15 data = os.path.join(here, 'data')
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16 full_tsv_lines = 149092
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17
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18 class DataIntegrityTest(unittest.TestCase):
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19
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20 sample_tsv = os.path.join(data, 'sample.tsv')
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21 assert os.path.exists(sample_tsv)
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22 full_tsv = os.path.join(data, 'cities1000.txt')
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23 assert os.path.exists(full_tsv)
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24
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25 def test_primary_key(self):
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26 """ensure we have a unique key to identify cities"""
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27
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28 with open(self.full_tsv) as f:
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29 cities = list(read_cities(f))
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30 n_cities = len(cities)
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31 assert n_cities == full_tsv_lines
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32
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33 # show we have duplicate names
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34 nameset = set([city['name'] for city in cities])
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35 assert len(nameset) != n_cities
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36 asciinameset = set([city['asciiname'] for city in cities])
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37 assert len(asciinameset) != n_cities
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38
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39 # show we do have a unique key
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40 geonameids = set([city['geonameid'] for city in cities])
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41 assert len(geonameids) == n_cities
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42
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43 # is ('name', 'country code') unique?
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44 nameccset = set([(city['asciiname'], city['country code'])
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45 for city in cities])
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46 assert len(nameccset) != n_cities # Nope!
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47
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48 def test_latlon(self):
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49 """
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50 ensure all latitudes and longitudes are in the
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51 range lat=(-90..90) and lon=(-180..180)
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52 """
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53
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54 # read cities
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55 with open(self.full_tsv) as f:
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56 cities = list(read_cities(f))
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57 n_cities = len(cities)
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58 assert n_cities == full_tsv_lines
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59
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60 # make a location map
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61 city_locations = locations(cities)
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62
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63 # ensure our data is value
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64 latrange = (-90., 90.)
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65 lonrange = (-180., 180.)
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66 for geoid, (lat, lon) in city_locations.iteritems():
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67 assert isinstance(geoid, int)
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68 assert latrange[0] <= lat <= latrange[-1]
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69 assert lonrange[0] <= lon <= lonrange[-1]
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71
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72 if __name__ == '__main__':
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73 unittest.main()