将滑块添加到matplotlib图表

Question

我有一个生成简单2D图表的matplotlib代码。我想为hte和hre变量（这是数组）添加滑块小部件，以便交互式地增加或减少hte和hre值。有没有一种方法（我确信这是因为我在matplotlib网站上看到了这样的something，但我无法将其与我的代码集成）？任何帮助将不胜感激。下面是代码：

from mpl_toolkits.mplot3d import Axes3D 
from matplotlib import cm 
from matplotlib.ticker import LinearLocator, FixedLocator, FormatStrFormatter 
import matplotlib.pyplot as plt 
import numpy as np 
from pylab import * 

hte=np.array([10,11,12,13,15,20,21,22,25,30]) 
hre=np.array([1,2,3,4,5,6,7,8,9,10]) 

k=20*hte 
n4=10*hre 
t=6 
w4=25 

x=arange(1,100,10) 
d=(log(x)/log(10))/10 
y= k + n4 * (d) + t + w4 + 8 

matplotlib.pyplot.jet() 
lines=plot(x,y) 
setp(lines, linewidth=2, color='r') 
xlabel('X - Title') 
ylabel('Y - title') 
title('$Our Chart$') 
grid(True) 
show() 

Answer 1

按照你的意见，我选择的滑块，他们乘阵列中的值的方法。你应该应用你的特定算法。

from pylab import * 
from matplotlib.widgets import Slider 
import numpy as np 

hte = np.array([10, 11, 12, 13, 15, 20, 21, 22, 25, 30]) 
hre = np.array([1, 2, 3, 4, 5, 6, 7, 8, 9, 10]) 

k = 20 * hte 
n4 = 10 * hre 
t, w4 = 6, 25 
x = arange(1, 100, 10) 
d = log10(x)/10 

y = k + n4 * d + t + w4 + 8 

ax = subplot(111) 
subplots_adjust(left=0.15, bottom=0.25) 
line, = plot(x, y, linewidth=2, color='r') 

xlabel('X - Title') 
ylabel('Y - title') 
title('$Our Chart$') 
grid(True) 

axcolor = 'lightgoldenrodyellow' 
axhte = axes([0.15, 0.1, 0.65, 0.03], axisbg=axcolor) 
axhre = axes([0.15, 0.15, 0.65, 0.03], axisbg=axcolor) 

shte = Slider(axhte, 'hte', 0.1, 30.0, valinit=1) 
shre = Slider(axhre, 'hre', 0.1, 10.0, valinit=1) 

def update(val): 
    k = 20 * hte * shte.val 
    n4 = 10 * hre * shre.val 

    y= k + n4 * d + t + w4 + 8 

    line.set_ydata(y)  
    ax.set_ylim(y.min(), y.max()) 
    draw() 

shte.on_changed(update) 
shre.on_changed(update) 

show()