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MATPLOTLIB COM

Talented Tortoise answered on January 18, 2024 Popularity 1/10 Helpfulness 1/10

answer MATPLOTLIB COM

MATPLOTLIB COM

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# live_plot_sensor.py

import time
import serial
import matplotlib.pyplot as plt
import matplotlib.animation as animation

# animation function
def animate(i, data_lst, ser):  # ser is the serial object
    b = ser.readline()
    string_n = b.decode()
    string = string_n.rstrip()
    try:
        flt = float(string)
        data_lst.append(flt)
        data_lst.append(flt)
    except:
        pass
    # Add x and y to lists

    # Limit the data list to 100 values
    data_lst = data_lst[-100:]
    # clear the last frame and draw the next frame
    ax.clear()
    ax.plot(data_lst)
    # Format plot
    ax.set_ylim([0, 1050])
    ax.set_title("Potentiometer Reading Live Plot")
    ax.set_ylabel("Potentiometer Reading")


# create empty list to store data
# create figure and axes objects
data_lst = []
fig, ax = plt.subplots()

# set up the serial line
ser = serial.Serial("/dev/ttyUSB0", 9600)  # change COM# if necessary
time.sleep(2)
print(ser.name)

# run the animation and show the figure
ani = animation.FuncAnimation(
    fig, animate, frames=100, fargs=(data_lst, ser), interval=100
)
plt.show()

# after the window is closed, close the serial line
ser.close()
print("Serial line closed")

Popularity 1/10 Helpfulness 1/10 Language python

Source: pythonforundergradengineers.com

Tags: com matplotlib python

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Contributed on Jan 18 2024

Talented Tortoise

0 Answers Avg Quality 2/10

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