plot-data-diff.py

from pandas import read_csv
from pandas import datetime
from matplotlib import pyplot
import numpy

file_path = "minyak-goreng-prices.csv"
 
def parser(x):
    splited = x.split('-')
    return datetime.strptime(splited[0] + "-" + splited[1] + "-20" +splited[2], '%d-%b-%Y')
 
series = read_csv(file_path, header=0, parse_dates=[0], index_col=0, squeeze=True, date_parser=parser)
print(series.head())
# X = series
diff = series.diff()
# pyplot.plot(X, color='blue')
pyplot.plot(diff, color='red')
pyplot.show()