散点图错误：“x 和 y 的大小必须相同”但它们的大小相同

Question

我想用数据框制作散点图：“df_death_mois1”。但它不起作用。错误消息是：“x 和 y 的大小必须相同”。你能帮帮我吗？

import pandas as pd 
import matplotlib.pyplot as plt
members = pd.read_csv("https://raw.githubusercontent.com/rfordatascience/tidytuesday/master/data/2020/2020-09-22/members.csv")
expeditions = pd.read_csv("https://raw.githubusercontent.com/rfordatascience/tidytuesday/master/data/2020/2020-09-22/expeditions.csv")
expeditions['highpoint_date'] = pd.to_datetime(expeditions['highpoint_date'])
lesmois = expeditions['highpoint_date'].dt.month
expeditions["mois"] = lesmois
expeditions
 df_members_mois = pd.merge(members,expeditions[['expedition_id','mois']], on='expedition_id', how='inner')
 df_death_mois = df_members_mois[df_members_mois["death_cause"]=="Avalanche"]
 df_death_mois
 df_death_mois1 = df_death_mois.groupby("mois")['death_cause'].count()
 df_death_mois1 = df_death_mois1.to_frame()
 df_death_mois1
 plt.scatter(x="mois", y = "death_cause", data = df_death_mois1)
 plt.title('scatterplot')
 plt.xlabel('x')
 plt.ylabel('y')
 plt.show()

Answer 1

reset_index 然后拨打plot.scatter:

>>> df_death_mois1.reset_index().plot.scatter(x="mois", y="death_cause")

使用matplotlib.pyplot，您可以使用：

>>> plt.scatter(x=df_death_mois1.index, y=df_death_mois1["death_cause"])