我想交換 x 軸和 y 軸並將此圖更改為水平圖 python

Question

我想交換 x 軸和 y 軸並將這個圖變成水平圖

我的 python 代碼

    an_image = PIL.Image.open("static/img/t2.jpg")
    gray_img = ImageOps.grayscale(an_image)
    image_sequence = gray_img.getdata()
    image_array = np.array(image_sequence)
    with plt.style.context('dark_background'):
        plt.plot(image_array[:1024], color='white' )
    plt.savefig('static/img/his.png')

Answer 1

我不確定這是否是您想要的，但這將交換原始圖形的 x 軸和 y 軸：

an_image = PIL.Image.open("static/img/t2.jpg")
gray_img = ImageOps.grayscale(an_image)
image_sequence = gray_img.getdata()

y = np.array(image_sequence)
with plt.style.context('dark_background'):
    # Create the x-axis with the same size as y-axis
    x = np.arange(0, 1024)
    
    # Plot x-axis and y-axis in swapped positions
    plt.plot(y[:1024], x, color='white')

plt.savefig('static/img/his.png')

---

如果我想將 x 軸移到頂部，我該怎么辦？

只需添加

plt.gca().xaxis.tick_top()

在保存圖之前。

完整代碼：

an_image = PIL.Image.open("static/img/t2.jpg")
gray_img = ImageOps.grayscale(an_image)
image_sequence = gray_img.getdata()

y = np.array(image_sequence)
with plt.style.context('dark_background'):
    x = np.arange(0, 1024)
    plt.plot(y[:1024], x, color='white')

plt.gca().xaxis.tick_top()
plt.savefig('static/img/his.png')