week 5 : UNESCO heritage in the world

I select some of the UNESCO heritage sites and bring these into slippymap.

import spatialpixel.mapping.slippymapper as slippymapper
import csv
def setup():
    size(1000, 800, P2D)
pin = loadImage("https://s3.amazonaws.com/spatialpixel/maps/map-pin-10px.png")
global w
    w = slippymapper.SlippyMapper(0,0, 2, 'carto-light', width, height)
with open('whc-sites-2017.csv') as f:
        reader = csv.reader(f)
        header = reader.next()
for row in reader:
            latitude = float(row[2])
            longitude = float(row[1])
            w.addMarker(latitude, longitude, pin)
w.render()
def draw():
    background(255)
    w.draw()