pyplot.subplot 及 imshow绘图去除坐标轴及调整子图间距

最新推荐文章于 2023-11-11 20:35:15 发布

luluny

最新推荐文章于 2023-11-11 20:35:15 发布

阅读量1.6w

点赞数 2

CC 4.0 BY-SA版权

分类专栏： python

本文链接：https://blog.youkuaiyun.com/luluny/article/details/75675665

python 专栏收录该内容

4 篇文章

订阅专栏

本文介绍了如何使用pyplot的subplot功能创建子图，并讲解了如何去除坐标轴以及调整子图之间的间距。通过示例说明了在设置子图参数时，left、right、bottom和top的含义及其要求，强调了这些值必须是相对于figure尺寸的分数，并且从figure的左下角开始测量。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

fnum = len(train_datasets)
plt.figure("show pickle", figsize=(10,10))
j = 0
for set_filename in train_datasets:
    print('trying to read pickle: %s '  % set_filename)
    try:
        with open(set_filename, 'rb') as f:
            dataset=pickle.load(f)
    except Exception as e:
        print('Unable to open pckle file ', set_filename, ':', e)
    print ('%d images in total in file %s' % (len(dataset), set_filename))  
    for i in range(10):

        plt.subplot( fnum, 10, 10*j + i + 1)
        plt.imshow(dataset[i], cmap='gray');

	##去除子图的坐标轴, 对上一个画出的子图起作用
        plt.axis('off')

j += 1

##设定子图间距 ， left < right, top > bottom, 数字表示窗口大小的比例（如下则子图间距为窗口大小的1%） 
plt.subplots_adjust(left=0.04, top= 0.96, right = 0.96, bottom = 0.04, wspace = 0.01, hspace = 0.01)

关于为什么要了left<right （否则会报错 ValueError: bottom cannot be >= top）:

When using subplots_adjust, the values of left, right, bottom and top are to be provided as fractions of the figure width and height. In additions, all values are measured from the left and bottom edges of the figure. This is why right and top can't be lower than left and right. A typical set-up is: ----- 点击打开参考源