from macslib import *
import time

# this converts string dates MM/DD/YYYY to the number of days
global dateStart
dateStart = None
def dateStringToNum(dateStr):
    global dateStart
    date = time.strptime(dateStr,'%m/%d/%Y')
    if dateStart == None:
        dateStart = date
    return 365*(date.tm_year - dateStart.tm_year) + (date.tm_yday - dateStart.tm_yday)

    
# the plotting starts here :)

allDays, allTemps = loadData('meanDailyTemp',converters={0:dateStringToNum})

daysToPlot = allDays[::7] # What do you think this does?
tempsToPlot = allTemps[::7] # What do you think this does?

drawPoints( daysToPlot, tempsToPlot, connect=True )