我想交换 x 轴和 y 轴并将此图更改为水平图 python

Question

我想交换 x 轴和 y 轴并将这个图变成水平图

我的 python 代码

    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

我不确定这是否是您想要的，但这将交换原始图形的 x 轴和 y 轴：

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')

---

如果我想将 x 轴移到顶部，我该怎么办？

只需添加

plt.gca().xaxis.tick_top()

在保存图之前。

完整代码：

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')