Factor out `get_link()` from plot functions

visualizer.py

@@ -93,8 +93,7 @@ def plot_boxplot():
         return row[field]
 
     for year in years:
-        json_link = get_link(name, year) + '.jsonld'
-        data = read_data(name, year, json_link)
+        data = read_data(name, year)
         selected_data = data[:, field]
         plot_data.append(selected_data)
 
@@ -125,9 +124,8 @@ def plot():
     name = get_query('name')
     year = get_query('year', to=year_type)
     field = get_query('field', to=field_type)
-    json_link = get_link(name, year) + '.jsonld'
     units = field_units[field]
-    data = read_data(name, year, json_link)
+    data = read_data(name, year)
     fig, axes = plt.subplots()
     fig.set_figheight(6)
     fig.set_figwidth(12)
@@ -163,8 +161,7 @@ def plot_overlay():
         return [row for row in rows if (row[0].month, row[0].day) != (2, 29)]
 
     for dset in datasets:
-        dset.json_link = get_link(dset.name, dset.year) + '.jsonld'
-        raw_data = read_data(dset.name, dset.year, dset.json_link)
+        raw_data = read_data(dset.name, dset.year)
         dset.data = np.array(ignore_feb_29(raw_data))
 
     fig, axes = plt.subplots()
@@ -266,8 +263,8 @@ def get_record_link():
     return get_link(name, year)
 
 
-def get_resources(json_link):
-    doc = jsonld.flatten(json_link)
+def get_resources(link):
+    doc = jsonld.flatten(link + '.jsonld')
     for i in doc:
         types = i.get('@type', [])
         if DISTRIBUTION not in types:
@@ -284,9 +281,9 @@ def get_resources(json_link):
             yield url
 
 
-def read_data(name, year, json_link):
+def read_data(name, year):
     daily_data = []
-    resource_list = get_resources(json_link)
+    resource_list = get_resources(get_link(name, year))
     for url in resource_list:
         data = urlopen(url)
         if name == 'South Pole Station':