Matplotlib：旋转xticks时，标签之间的间隙不均匀

Question

这很奇怪。旋转-90º时，所有标签的间距相等，并位于其位置：

feat_names = ["totalUniqueCustomerPhoneNumberLocal_f",
                "userIdentitty_f",
                "EMAIL_WEEKS_1_f",
                "length_f",
                "totalValidations_f",
                "amount_per_purchase_k",
                "amount_f"]

X1 = np.array([0.18790969, 0.18208303, 0.15003641, 0.11143482, 0.07428987,
       0.06846322, 0.06773489])

plt.figure()
plt.title("Feature importances")
plt.bar(range(X1.shape[0]), X1,color="r", align="center")
plt.xticks(range(X1.shape[0]), feat_names, rotation = -90)
plt.xlim([-1, X1.shape[0]])
plt.show()

但是，我需要将它们旋转-45º，结果如下：

feat_names = ["totalUniqueCustomerPhoneNumberLocal_f",
                "userIdentitty_f",
                "EMAIL_WEEKS_1_f",
                "length_f",
                "totalValidations_f",
                "amount_per_purchase_k",
                "amount_f"]

X1 = np.array([0.18790969, 0.18208303, 0.15003641, 0.11143482, 0.07428987,
       0.06846322, 0.06773489])

plt.figure()
plt.title("Feature importances")
plt.bar(range(X1.shape[0]), X1,color="r", align="center")
plt.xticks(range(X1.shape[0]), feat_names, rotation = -45)
plt.xlim([-1, X1.shape[0]])
plt.show()

当标签旋转-45º时，如何使标签开始与条的中心对齐

谢谢

Answer 1

水平对齐通过horizontalalignment或其别名ha完成

plt.xticks(..., rotation = -45, ha="left")