import matplotlib.pyplot as plt
import numpy as np
import serial, sys
import matplotlib.pyplot as plt
import time

port = "COM3"
baudrate = 9600
#ser = serial.Serial(port,baudrate,timeout=0.001)
"""
while True:
    data = ser.read(1)
    data+= ser.read(ser.inWaiting())
    sys.stdout.write(str(data))
    sys.stdout.flush()
"""
"""
l = 16
x = np.arange(-l,l,.2)
y= np.zeros(x.shape)
print(x.shape)
print(y.shape)
plt.ion()
fig,ax = plt.subplots()
line, = ax.plot(x,y)
plt.show()
np.delete(y,0)
np.append(y,1)
line.set_ydata(y)
fig.canvas.draw()
print(y.shape)
index=0

while 1:
   time.sleep(0.01)
   #update vectors
   np.delete(y,0)
   np.append(y, np.sin(0.2*index))
   #int.from_bytes(data, "big")
   line.set_ydata(y)
   fig.canvas.draw()
   index+=1   
"""

plt.axis([0, 10, -1, 1])
index=0
while 1: #switch to while there is data
    y = np.sin(index)
    plt.scatter(index, y)
    index+=0.1
    plt.pause(0.001)
    if (index==10):
        index=0

plt.show()