Nov-13-2020, 10:56 PM
This code is error-free but i don't know what i am not doing correctly that i can't get a live graph. Any help or direction would be appreciated.
import matplotlib
import matplotlib.pyplot as plt
import matplotlib.animation as animation
from matplotlib.animation import FuncAnimation
from itertools import count
from matplotlib.figure import Figure
global anim
# Creating the animation Method
def animation(i):
filename = '/home/pi/Work_Files/Project/Data_files/sensor_data.csv'
data_read = open(filename)
Date = list()
Time = list()
ct = get_ctemp()
ft = get_ftemp()
humi = get_humidity()
for line in data_read:
row = line.split(',')
Date_now = row[0]
time_now = row[1]
temperature_now = row[2]
fahrenheit_now = row[3]
humidity_now = row[4]
date_new = datetime.date.strftime(my_date, "%b %d %Y")
time_new = datetime.date.strftime(my_date, "%H:%M")
# Data Variables. Append values to keep graph dynamic
try:
Date.append(Date_now)
Time.append(time_now)
ct.append(float(temperature_now))
ft.append(float(fahrenheit_now))
humi.append(float(humidity_now))
except:
print("don't know")
plt.style.use('fivethirtyeight')
fig = plt.figure(figsize=(8,8))
plt.subplot(3,1,1)
plt.plot(Time, ct, 'bo', label = "Celsius")
plt.ylabel("Temperature readings"), plt.title("Temperature Graph")
plt.legend()
plt.subplot(3,1,2)
plt.plot(Time, ft, 'g-', label = "Fahrenheit")
plt.ylabel("Fahrenheit readings"), plt.title("Fahrenheit Graph")
plt.legend()
plt.subplot(3,1,3)
plt.plot(Time, humi, 'r-', label = "Humidity")
plt.xlabel("Current Time"), plt.ylabel("Humidity readings"), plt.title("Humidity Graph")
plt.legend()
anim = FuncAnimation(fig, animate, interval=1000, blit=True)
plt.show()