通过文本框交互式matplotlib图

我想创建一个具有三个参数的多维函数的交互式matplotlib图变化。问题是参数可能会在很大的范围内变化，所以我宁愿不使用滑块，而是直接键入我想要的值。基本上，我想重新创建下面的典型的例子，其中滑块代替我想文本框，其中我可以输入参数通过文本框交互式matplotlib图

import numpy as np 
import matplotlib.pyplot as plt 
from matplotlib.widgets import Slider, Button, RadioButtons 

fig, ax = plt.subplots() 
plt.subplots_adjust(bottom=0.35) 
t = np.arange(0.0, 1.0, 0.001) 
a0 = 5 
f0 = 3 
s = a0*np.sin(2*np.pi*f0*t) 
l, = plt.plot(t,s, lw=2, color='red') 
plt.axis([0, 1, -10, 10]) 
ax.plot(t,t) 

axcolor = 'lightgoldenrodyellow' 
axamp = plt.axes([0.25, 0.25, 0.65, 0.03], axisbg=axcolor) 
axfreq = plt.axes([0.25, 0.2, 0.65, 0.03], axisbg=axcolor) 

sfreq = Slider(axfreq, 'Freq', 0.1, 30.0, valinit=f0) 
samp = Slider(axamp, 'Amp', 0.1, 10.0, valinit=a0) 

def update(val): 
    amp = samp.val 
    freq = sfreq.val 
    l.set_ydata(amp*np.sin(2*np.pi*freq*t)) 
    fig.canvas.draw_idle() 
sfreq.on_changed(update) 
samp.on_changed(update) 

resetax = plt.axes([0.8, 0.025, 0.1, 0.04]) 
button = Button(resetax, 'Reset', color=axcolor, hovercolor='0.975') 
def reset(event): 
    sfreq.reset() 
    samp.reset() 
button.on_clicked(reset) 


plt.show()

来源

2015-01-17 pythonnoob

也看到了这个问题：https://stackoverflow.com/questions/43973758/how-do-i-make-matplotlib-open-a -box-for-user-comments – ImportanceOfBeingErnest

Matplotlib即将推出TextBox Widget（可能在版本2.1（？））。在[本例中]查看它的用法（https://matplotlib.org/devdocs/gallery/widgets/textbox.html）。 – ImportanceOfBeingErnest

可以将GUI面板添加到该图中的窗口。以下是使用Qt4Agg后端的示例，并将QDockWidget添加到主图形窗口，然后可以将QWidgets添加到停靠窗口。

import numpy as np 
import matplotlib 
matplotlib.use("Qt4Agg") # This program works with Qt only 
import pylab as pl 
fig, ax1 = pl.subplots() 

t = np.linspace(0, 10, 200) 

line, = ax1.plot(t, np.sin(t)) 

### control panel ### 
from PyQt4 import QtGui 
from PyQt4 import QtCore 
from PyQt4.QtCore import Qt 

def update(): 
    freq = float(textbox.text()) 
    y = np.sin(2*np.pi*freq*t) 
    line.set_data(t, y) 
    fig.canvas.draw_idle() 

root = fig.canvas.manager.window 
panel = QtGui.QWidget() 
hbox = QtGui.QHBoxLayout(panel) 
textbox = QtGui.QLineEdit(parent = panel) 
textbox.textChanged.connect(update) 
hbox.addWidget(textbox) 
panel.setLayout(hbox) 

dock = QtGui.QDockWidget("control", root) 
root.addDockWidget(Qt.BottomDockWidgetArea, dock) 
dock.setWidget(panel) 
###################### 

pl.show()

下面的画面是：

enter image description here

来源

2015-01-18 11:31:54 HYRY

太棒了，非常感谢！ – pythonnoob

通过文本框交互式matplotlib图

回答

相关问题