如何调整子图间距并在matplotlib中放置y标签?

如果标签不长,只需将其添加到中间的图形中并使用 tight_layout 要格式化它:

fig = plt.figure(figsize=(15,9))
for i in range(3):
    ax = plt.subplot2grid((3, 5), [i, 0], 1, 1 )
for i in range(3):
    ax = plt.subplot2grid((3, 5), [i, 1], 1, 1 ) 
for i in range(3):
    ax = plt.subplot2grid((3, 5), [i, 2], 1, 3 )
    if i == 1:
        ax.set_ylabel("label for all")

plt.tight_layout()
plt.show()

紧凑的布局 会曲解中间一排的高度。在这种情况下,我们可以简单地将文本替换为以后的较长版本:

fig = plt.figure(figsize=(15,9))
for i in range(3):
    ax = plt.subplot2grid((3, 5), [i, 0], 1, 1 )
for i in range(3):
    ax = plt.subplot2grid((3, 5), [i, 1], 1, 1 ) 
for i in range(3):
    ax = plt.subplot2grid((3, 5), [i, 2], 1, 3 )
    if i == 1:
        mylabel = ax.set_ylabel("dummy")

plt.tight_layout()

mylabel.set_text("not a dummy any more but a very very very loooooooooooooooooong label")
plt.show()

样本输出: