[英]How to plot incomplete data with matplotlib
I am doing some processing and I want to plot progress. 我正在做一些处理,我想绘制进度。 I know my total number of runs, I calculate results on every 100th run and I want to generate a new plot every time.
我知道我的总奔跑次数,我每100个奔跑计算一次结果,并且每次都想生成一个新图。 So, my code looks something like this
所以,我的代码看起来像这样
start = time.time() speeds = [] for step in range(steps): do_my_stuff() if step % 100 == 0: speeds.append((step + 1) / (time.time() - start)) x = np.arrange(steps) y = np.array(speeds) plt.plot(x, y, 'ro')
And, of course, I get "x and y must have same first dimension" error. 而且,当然,我收到“ x和y必须具有相同的第一维”错误。 It seems like such a simple and common issue, but for some reason I cannot find a ready solution.
看来这是一个简单而常见的问题,但是由于某种原因,我无法找到一个合适的解决方案。 I am probably not googling for the right thing.
我可能不是在寻找正确的东西。 What am I missing?
我想念什么?
Update #1: To make myself a bit more clear. 更新#1:让自己更加清楚。 I want to redraw the plot every 100 iterations of my process.
我想每隔100次迭代就重画一次绘图。 I want the plot to reflect the currently accumulated speed points.
我希望该图反映当前累计的速度点。 I want it to scale from 0 to maximum steps and I want it to be empty where speeds were not calculated yet.
我希望它从0扩展到最大步长,并且希望它在没有计算速度的地方为空。
I would plot every single pair of x and y interactively, and set the limits of the plot to the desired values. 我将交互地绘制每对x和y,并将图的极限设置为所需的值。 You can still append the data if you need it later on.
如果以后需要,您仍然可以附加数据。 Look at this example:
看这个例子:
import time
import matplotlib.pyplot as plt
import matplotlib
plt.ion()
fig = plt.figure(1,figsize=(5,5))
ax = fig.add_subplot(111)
steps = 1000
ax.set_xlim(0,steps)
ax.plot(1,1)
plt.draw()
start = time.time()
speeds = []
for step in range(steps):
#Your stuff here
if step % 100 == 0:
speed = (step + 1.0) / (time.time() - start)
plt.plot(step, speed, 'ko')
plt.draw()
plt.pause(1)
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