python - Real-time display of results in Python

Question

I have this program which will solve a system of differential equations in such way that two values xi, yi are produced each time a for loop iterates. Is there some way i could plot these values as they are produced instead of waiting for the computation to finish, then plotting them all?

Answer 1

假设您的算法如下所示：

import matplotlib

x_list = []
y_list = []
while True:
    xi, yi = compute() # calculates your xi and yi value
    if converged(xi, yi):
        break
    # capture history of your xi and yi
    x_list.append(xi)
    y_list.append(yi)

matplotlib.pyplot.plot(x, y) # create a graph representing x and y

Answer 2

您可能想看看 matplotlib ( http://matplotlib.sourceforge.net/ ) 或 gnuplot.py ( http://gnuplot-py.sourceforge.net/ )。完成后，我使用这些来绘制数据，但我看不出为什么在生成数据时不能这样做。但是，根据循环执行的速度，这可能会减慢整个程序的速度。

gnuplot 可能不再维护，但我一直在使用它，没有任何问题。