1. You should read the data from "yellow_tripdata_small_2016-01.csv". the file link is provided at the end.
2. remove any data that is outside the NYC bounding box
   • NYC bounding box: westlimit=-74.2635; southlimit=40.4856; eastlimit=-73.7526; northlimit=40.9596
   • See http://boundingbox.klokantech.com for info on bounding boxes
3. calculate taxi trip duration and save in a new column "duration"
4. convert duration into a float
5. do some basic analysis (see below)
6. add a day of week column
7. add an hour of day column
8. do some analysis (see below)
9. divide the data into zones
   • write a function createZoneTable(zone_factor) that divides the bounding box into zones
   • The idea is to create zone_factor * zone_factor zones
   • E.g., if zone_factor is 20, you'll create 20*20 = 400 zones
   • divide the longitude (-73.7526 to -74.2635) into zone_factor (e.g., 20) sections
   • divide the latitude (40.4856 to 40.9596) into zone_factor (e.g., 20) sections
   • return a table (a list of lists) containing a zone id, and the coordinates of the zone
   • (see e.g., below)
10. write a function get_zone(lon,lat) that figures out the zone given a latitude and longitude
11. apply this function to the dataframe, first with pickup lats and longs; then with dropoff lats and longs
12. This will give two new "pickup_zone" and "dropoff_zone" columns
13. do some analysis (see below)
14. Using folium, draw a heatmap of the number of trips originating in each zone
    • create a geojson object for all the zones
    • create a df that contains zone numbers and the number of trips originating in each zone
    • use folium to be able to create a heatmap
    • OPTIONAL: You'll notice that the bounding box is much larger than New York City. Try to remove every zone that has 0 originating trips from your map. (Hint: You can remove them from the geojson object)

- The "yellow_tripdata_small_2016-01.csv" file is provided here: https://drive.google.com/file/d/1wxDRPGis5Y2i7DW-prj2pEa3BO4w6A40/view?usp=sharing

- Extra information is provided in the file here: https://drive.google.com/file/d/1mRYbOMiEFyY-BBNRliChXIZ3sPsld_ru/view?usp=sharing