Added some comments

api/GetAverageData.py

@@ -10,6 +10,7 @@ param_postgres = cfg["POSTGRES"]
 param_interpol = cfg["INTERPOLATION"]
 
 
+# Calculate average for a certain period of time for each station
 def get_average_of_multiple_years(cursor, years):
     avg_strings = " "
     and_strings = ""
@@ -41,6 +42,7 @@ def get_year_columns(cursor):
     return columns
 
 
+# Find minimum and maximum temperature value in database for colour ramp
 def find_extremum(cursor, years, extremum):
     extremum_strings = ''
     and_strings = ''
@@ -65,7 +67,7 @@ def get_min_max(cursor):
     return min, max
 
 
-# Find n (defined in config) neighbours and return them ordered by distance
+# Find all neighbours and return them ordered by distance
 def get_neighbours(cursor, lat, lon, columns):
     values = ''  # Used in second parameter of cursor.execute() (Avoids SQL injection)
     for n in [lat, lon]:
@@ -97,6 +99,7 @@ def calc_averages(neighbours, years):
     return averages
 
 
+# Find the nearest n neighbours (defined in config.ini) that are not NaN
 def filter_neighbours(year, neighbours):
     filtered_neighbours = []
     neighbour_counter = 0