t = t[:len(composite_index)] ax1.plot(t, composite_index, color=color)这句代码加在什么位置

This code should be added after the `composite_index` array is created and before it is plotted. Here's an example of how you can modify your code to include this fix: ``` import numpy as np import matplotlib.pyplot as plt # Generate some sample data t = np.linspace(0, 10, 1048576) y = np.sin(t) # Create the composite index composite_index = np.cumsum(y) # Truncate t to match the length of composite_index t = t[:len(composite_index)] # Plot the data fig, ax1 = plt.subplots() color = 'tab:red' ax1.set_xlabel('Time (s)') ax1.set_ylabel('Composite Index