Question

我想知道如何在matplotlib中动态更新堆积条形图。

这个问题Dynamically updating a bar plot in matplotlib描述了如何对普通条形图进行处理，而不是堆积条形图。

在普通条形图中，可以通过rect.set_height(h)进行更新，假设rects = plt.bar(range(N), x, align='center')

但在堆积条形图中，我们还需要设置底部。

p2 = plt.bar(ind, womenMeans, width, color='y',
             bottom=menMeans, yerr=menStd)

如何动态设置底部？不幸的是，似乎'Rectangle'对象没有属性'set_bottom'。有没有其他方法可以解决这个问题？

Answer 1

出于某种原因，set_bottom()所需的set_y函数位于patches的返回对象bar下import numpy as np import matplotlib.pyplot as plt def setup_backend(backend='TkAgg'): import sys del sys.modules['matplotlib.backends'] del sys.modules['matplotlib.pyplot'] import matplotlib as mpl mpl.use(backend) # do this before importing pyplot import matplotlib.pyplot as plt return plt N = 5 width = 0.35 # the width of the bars: can also be len(x) sequence def animate(): # http://www.scipy.org/Cookbook/Matplotlib/Animations mu, sigma = 100, 15 h = mu + sigma * np.random.randn((N*2)) p1 = plt.bar(np.arange(N), h[:N], width, color='r') p2 = plt.bar(np.arange(N), h[N:], width, color='b', bottom=h[:N]) assert len(p1) == len(p2) maxh = 0. for i in range(50): for rect1, rect2 in zip(p1.patches, p2.patches): h = mu + sigma * np.random.randn(2) #Keep a record of maximum value of h maxh = max(h[0]+h[1],maxh) rect1.set_height(h[0]) rect2.set_y(rect1.get_height()) rect2.set_height(h[1]) #Set y limits to maximum value ax.set_ylim((0,maxh)) fig.canvas.draw() plt = setup_backend() fig, ax = plt.subplots(1,1) win = fig.canvas.manager.window win.after(10, animate) plt.show()。最小的例子，基于你建议的链接，

public View getView(int position, View convertView, ViewGroup parent) {
    LayoutInflater inflater = (LayoutInflater) context
        .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    View gridView;
    if (convertView == null) {
        gridView = new View(context);
    } else {
        gridView = (View) convertView;
    }
    gridView = inflater.inflate(R.layout.worker_listmain, null);
    // your source code here!!! Run 100%
    // I got this problem also, I found out the way to solve it! 
    // Please use my source code :D SIMPLE is PERFECT :D
    return gridView;
}

注意，我在每次迭代时使用随机数更改高度生成，因此可以压缩两个补丁数组（否则会有点麻烦）。

动态更新matplotlib

1 个答案: