如果 Matplotlib 像這樣打印線圖兩次或多次，可能會出現什么問題：這是我的代碼：import pandas as pdimport numpy as npimport scipyimport matplotlib.pyplot as pltfrom scipy import integrate def compute_integrated_spectral_response_ikonos(file, sheet):    df = pd.read_excel(file, sheet_name=sheet, header=2)    blue = integrate.cumtrapz(df['Blue'], df['Wavelength'])    green = integrate.cumtrapz(df['Green'], df['Wavelength'])    red = integrate.cumtrapz(df['Red'], df['Wavelength'])    nir = integrate.cumtrapz(df['NIR'], df['Wavelength'])    pan = integrate.cumtrapz(df['Pan'], df['Wavelength'])    plt.figure(num=None, figsize=(6, 4), dpi=80, facecolor='w', edgecolor='k')    plt.plot(df[1:], blue, label='Blue', color='darkblue');    plt.plot(df[1:], green, label='Green', color='b');    plt.plot(df[1:], red, label='Red', color='g');    plt.plot(df[1:], nir, label='NIR', color='r');    plt.plot(df[1:], pan, label='Pan', color='darkred')    plt.legend(bbox_to_anchor=(1.05, 1), loc='upper left', borderaxespad=0.)    plt.xlabel('Wavelength (nm)')    plt.ylabel('Spectral Response (%)')    plt.title(f'Integrated Spectral Response of {sheet} Bands')    plt.show()compute_integrated_spectral_response_ikonos('Sorted Wavelengths.xlsx', 'IKONOS')這是我的數據集。