data_json_extract.py

import json
import numpy as np
from matplotlib import pyplot as plt

input_file = open('getDataNotSorted.json', 'r')
output_file = open('outputDataNotSorted.txt', 'w')
'''
input_file = open('getData.json', 'r')
output_file = open('getData.txt', 'w')
'''
json_object = json.load(input_file)

mylist = []

for item in json_object:
    data_int = item.get('time')
    mylist.append(data_int)
    data_str = str(data_int)
    output_file.write(data_str+"\n")


print("length of list: ", len(mylist))

diff_list = []
for i in range(1, len(mylist), 1):
    diff = mylist[i]-mylist[i-1]
    diff_list.append(diff)


rounded_list = [round(num, 1) for num in diff_list]


# textfile = open("roundedDataNotSorted.txt", "w")
textfile = open("roundedData.txt", "w")
for element in rounded_list:
    textfile.write(str(element) + "\n")
textfile.close()

x = np.arange(0, len(rounded_list))
y = np.array(rounded_list)

plt.title("diff_sorted")
plt.xlabel("order")
plt.ylabel("time difference")
plt.plot(x, y, color="green")
plt.ylim(-10000, 20000)
plt.xlim(0, len(rounded_list))
plt.show()