Added some routines for interpolating historical regional poll averages.

download_regional_poll_averages.py

@@ -0,0 +1,23 @@
+"""Quick and dirty script that downloads some regional poll averages."""
+
+import json
+import urllib2
+
+def PrintDataPoint(data, party_name):
+    row = [data['statdate'], data['region'], party_name, data[party_name]]
+    print ','.join(str(x) for x in row)
+
+def DoRegion(region_name):
+    url = ('http://cbcnewsinteractives.com/canopy/poll_tracker_prod/np/' +
+           'poll_averages/' + region_name + '?parseData=' +
+           'jQuery2140210138985227179_1443503953058&_=1443503953061')
+    response = urllib2.urlopen(url)
+    raw = response.read()
+    raw = raw.replace('parseData(', '').replace(');', '')
+    parsed = json.loads(raw)
+    for data_row in parsed['data']:
+        for party_name in ['cpc', 'ndp', 'lpc', 'gpc', 'bq', 'oth']:
+            PrintDataPoint(data_row, party_name)
+
+for region in ['Canada', 'AB', 'ATL', 'BC', 'ON', 'QC', 'SK_MB']:
+    DoRegion(region)

interpolator_example.py

@@ -0,0 +1,12 @@
+import datetime
+
+from regional_poll_interpolator import RegionalPollInterpolator
+
+interpolator = RegionalPollInterpolator()
+interpolator.LoadFromCsv('regional_poll_averages.csv')
+dates = ['2015-08-19', '2015-08-20', '2015-08-21', '2015-08-22',
+         '2015-08-23', '2015-08-24']
+for date_string in dates:
+    date = datetime.datetime.strptime(date_string, '%Y-%m-%d')
+    print date_string, interpolator.Interpolate('QC', 'ndp', date)
+print interpolator.GetMostRecent('SK_MB', 'gpc')

regional_baseline.csv

@@ -1,6 +1,6 @@
-,ATL,QC,ON,SKMB,AB,BC,TERR
-CON,37.46139295,16.5,44.4,54.7875,66.8,45.5,39.6
-LIB,29.58301806,14.2,25.3,12.92142857,9.3,13.4,18.9
-NDP,29.75,42.9,25.6,28.78883929,16.8,32.5,30.6
-GRN,2.960361135,2.1,3.8,3.186160714,5.3,7.7,3.9
-BQ,0,23.4,0,0,0,0,0
+,ATL,QC,ON,SK_MB,AB,BC,Canada
+cpc,37.46139295,16.5,44.4,54.7875,66.8,45.5,39.6
+lpc,29.58301806,14.2,25.3,12.92142857,9.3,13.4,18.9
+ndp,29.75,42.9,25.6,28.78883929,16.8,32.5,30.6
+gpc,2.960361135,2.1,3.8,3.186160714,5.3,7.7,3.9
+bq,0,23.4,0,0,0,0,0