Re: [Matplotlib-users] Matplotlib-users Digest, Vol 48, Issue 2

[animatore.trps03000x]

Dears all,

I solved the issue changing the command

'ani = animation.FuncAnimation(fig, run, data_gen, blit=True, interval=5,repeat=True) ’

and my Open Physics Laboratory works fine!!

Thanks a bunch far all!

Bye,

Marco

···

Il giorno mar 16 lug 2019 alle ore 18:02 [email protected] ha scritto:

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Today’s Topics:

1. Help request serila data plot, Ubuntu 18 (Animatore. TRPS03000X)

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Message: 1

Date: Mon, 15 Jul 2019 21:05:16 +0200

From: “Animatore. TRPS03000X” [email protected]

To: [email protected]

Subject: [Matplotlib-users] Help request serila data plot, Ubuntu 18

Message-ID:

    <CACxvrmM6QZKih4d5Zr_8s38Usf2kbEfhwkqw=uo_-vD6AoN6hw@mail.gmail.com>

Content-Type: text/plain; charset=“utf-8”

Dear matplot users,

I have installed Ubuntu 18 on my computer and Matplotlib, I use it to graph

position vs. time of moving objects by serial data.

The python script is the following:

import matplotlib

matplotlib.use(“Qt5Agg”)

import numpy as np

import matplotlib.pyplot as plt

import matplotlib.animation as animation

from time import sleep

import serial

import time

fine=“c”

pre=“ciao”

while (fine != “f”):

 raw_input("\n\n\n Premi Enter per far partire la registrazione dei

dati")

 xdata, ydata = [], []



 ser = serial.Serial('/dev/ttyACM0', 9600)



 while (False):



      pre=ser.readline()



 pre=ser.readline()



 prec = float(pre)



 y=prec



 fig, ax = plt.subplots()



 line, = ax.plot([], [], lw=2)



 ax.set_ylim(0, 90)



 ax.set_xlim(0, 10)



 ax.grid()



 def data_gen():



     t=0



     y=0



    cnt=0



    p=0



    a = ser.readline()



    while (True)&(t < 10):



        a = ser.readline()



        y = float(a)



        if (y != 0) :



            t = (time.time() - start)



            t = float(t)



            yield t, y



 def run(data):



     t,y = data



    xdata.append(t)



    ydata.append(y)



    ax.figure.canvas.draw()



    line.set_data(xdata, ydata)



   return line,

data_gen.t = 0

while (abs(y-prec) < 2):

if True:



     a = ser.readline()



     y = float(a)



     start = time.time()

ani = animation.FuncAnimation(fig, run, data_gen, blit=True,

interval=5,repeat=False)

plt.show()

stop =0

fine=raw_input(“Premi f per finire :”)

It works fine, but after the plotting (10 seconds), there is a problem, I

cannnot use the tools of the matplot window, i.e. when I try to zoom, after

selecting the area, the plot desappear.

Can you help me?

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