如何在python的动画(tkinter)中更新曲线图 [英] how to update curve plot in animation ( tkinter) of python
问题描述
从以下代码中,我可以通过单击重新绘制"按钮来更新该行.我必须同时使用set_data()并绘制一个新图,否则旧图仍在这里.
from the following code, I could update the line by clicking the "replot" button. I have to use both set_data() and also plot a new plot, otherwise the old plot is still here.
但是,我希望程序自动更新animate()内部的曲线,我使用5秒钟的控件来触发replot()函数,但是失败了.如果我不使用blit = True,仅使用blit = False,那么一切都很好.那么我的问题是如何更新条件触发的动画曲线,还需要保持blit = True?
However, I want the program automatically to update the curve inside of animate(), I use a 5 secs control to trigger replot() function, but it fails. if I do not use blit=True, just use blit=False, then everything is fine. Then my question is how to update the curve in animation triggered by condition, and also need to keep blit=True?
from multiprocessing import Process
import matplotlib
matplotlib.use("TkAgg")
from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg
##, NavigationToolbar2TkAgg
from matplotlib.figure import Figure
import matplotlib.animation as animation
from matplotlib import style
import tkinter as tk
from tkinter import ttk
from tkinter import *
import matplotlib.pyplot as plt
import numpy as np
import time
#f = Figure(figsize=(6,6), dpi=100)
f = Figure(figsize=(6,6), dpi=100)
subplot_1 = f.add_subplot(211)
subplot_2 = f.add_subplot(212)
#subplot_1 = f.add_subplot(211)
#subplot_2 = f.add_subplot(212)
a_count = 0
b_count = 0
LARGE_FONT= ("Verdana", 12)
style.use("ggplot")
count_plot = 0
first_replot = 0
start_time = 0
a_t = [1,2,3,4,5]
a_T = np.ones(5)
def replot():
global a_t, count_plot,theory_line,a_T
a_T = np.ones(5)*2
#f.axes[0].clear
#theory_line[0].remove()
theory_line[0].set_data(a_t,a_T)
#theory_line.clear()
#theory_line = subplot_1.plot(a_t,a_T,'g-')
#subplot_1.draw
canvas.draw
def animate(i):
global a_count,b_count,first_replot
time1 = np.random.rand(2, 25)
data = np.random.rand(2, 25)*2
if (time.time() - start_time > 5) and (first_replot == 0):
replot()
first_replot = 1
a = subplot_1.scatter(time1,data,c='blue',s=2)
return a,
class home(tk.Tk):
def __init__(self, *args, **kwargs):
tk.Tk.__init__(self, *args, **kwargs)
tk.Tk.wm_title(self, "Graph ")
self.geometry("1000x1000")
container = tk.Frame(self)
container.pack(side="top", fill="both", expand = True)
container.grid_rowconfigure(0, weight=1)
container.grid_columnconfigure(0, weight=1)
self.frames = {}
F=Graph
frame=Graph(container, self)
self.frames[F] = frame
frame.grid(row=0, column=0, sticky="nsew")
self.show_frame(Graph)
def show_frame(self, cont):
frame = self.frames[cont]
frame.tkraise()
def get_frame(self, frame_class):
return self.frames[frame_class]
##
class Graph(tk.Frame):
def __init__(self, parent, controller):
global canvas
tk.Frame.__init__(self, parent)
label = tk.Label(self, text=" ", font=LARGE_FONT)
label.pack(pady=120,padx=10)
collectbtn=Button(self,text='collect',command=self.clickstart)
collectbtn.place(x=200,y=100)
collectbtn=Button(self,text='replot',command=self.clickreplot)
collectbtn.place(x=280,y=100)
canvas = FigureCanvasTkAgg(f, self)
## canvas.draw()
canvas.get_tk_widget().pack(side=tk.BOTTOM, fill=tk.BOTH, expand=True)
canvas._tkcanvas.pack(side=tk.TOP, fill=tk.BOTH, expand=True)
def clickstart(self):
global theory_line,start_time
theory_line = subplot_1.plot(a_t,a_T,'c-')
#animate(0)
start_time = time.time()
aniplot_photon = animation.FuncAnimation(f, animate, blit=True,interval=100)
#aniplot_photon = animation.FuncAnimation(f, animate, interval=100)
canvas.draw()
def clickreplot(self):
replot()
canvas.draw()
app = home()
app.mainloop()
推荐答案
不确定编程逻辑,但我认为可能至少存在三个问题.
Not sure about the programming logic, but I think there maybe at least three issues.
- 如果您不单击收集",则不会重置开始时间,因此不会每5秒重新绘制一次.
def clickstart(self):
....
start_time = time.time()
aniplot_photon = animation.FuncAnimation(f, animate, blit=True,interval=100)
....
-
first_replot最初设置为0,在单击收集"并经过5秒钟后,first_replot的值将始终为1.这意味着函数动画"中不再有replot.
first_replot initially set to 0, after 'collect' clicked and 5 seconds passed, then the value of first_replot will be always 1. It means no more replot in function 'animate'.
canvas.draw应该是canvas.draw().
canvas.draw at last line of function 'replot', should be canvas.draw().
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