Python Tutorial - Plot Graph with real time values | Dynamic Plotting | Matplotlib

In this tutorial learn how to dynamically plot real time values on a graph using a CSV file.
Language - Python

Suggestions and questions are appreciated
Stay Tuned :)

[nityanandadas]

Nice video.
Here you have plotted data from an existing . CSV file after a specified interval of time.
What I need is :
I am running an instrument by Python ( power supply) and data is being collected after a certain interval of time.
I want to plot the trend of data in real time ( dynamic).
Is it possible?
Thanks and regards

[jeffstearns]

Very nice, thanks! Used some data of my own and selected multiple columns on the same graph and then different graphs and animation as you showed. Got a lot out of this video, subscribed and will check out some of your other videos as well. Definitely want to get up to speed on Pandas also.

[adnanwadekar]

Hi

I have written the below code i am getting the output in form of lne graph but then in juypiter notebook i have to run the file again and again it is not getting updated automatically

Code:
import pandas as pd
import matplotlib.pyplot as plt
from matplotlib import animation
%matplotlib inline


count=0
x=[]
y=[]

def draw_graph(i):
global count
count +=1
x.append(count)
y.append(data['Y'][count])

plt.cla()
plt.plot(x, y)

anima= animation.FuncAnimation(plt.gcf(), draw_graph, interval=1500)
plt.show()

[lakshmidevi]

Thanks for sending the reply that code is helpful for mr

[MuduoLi-jg]

Thanks for your video, here is my code but no display, could you please help me correcrt it:
import pandas as pd
import matplotlib.pyplot as plt
from matplotlib import animation
import os
os.getcwd()#


data = pd.read_csv("Load06_500mN cut.csv")
count = 0
x = []
y = []


def draw_graph(i):
global count
count += 1



plt.cla()
plt.plot(x, y)

anima = animation.FuncAnimation(plt.gcf(), draw_graph, interval=1500)
plt.show()

[ravikant-tdhq]

Suppose if i want my plot is in between 30-55. If my plot is greater then this value then it's detect anamoly or give notification. What i have to add the code?

[wuerik]

what is the 16th line ? count==1 (due to not so clear in youyube), i type all the code but it can't work
thank you for your help

[lakshmidevi]

Sir it's showing unicodescape escape can't decode bytes