如何绘制 python 中一行的聊天记录？

Question

如何在 python 中绘制一行的聊天记录？

我提取了这样一行：

cases_df[cases_df['Country/Region']=='India']

我已经提取了这样一行，想绘制它的折线图以查看 covid 情况下的上升。

cases_df[cases_df['Country/Region']=='India'].plot()

此代码无效

如何绘制这一行的折线图？

Answer 1

我认为最简单的方法是 select 数据列并转置它们：

df_ = cases_df[cases_df['Country/Region']=='India']

#Select all columns after the 4th
df_ = df_.iloc[:, 4:]

#Transpose
df_ = df_.T

#Optional: convert index to dates for a better-looking plot
df_ = df_.set_index(pd.to_datetime(df_.index, format = "%m/%d/y"))

df_.plot()

Answer 2

我想出了这个代码：

#Remove unnecessary columns
a = cases_df.drop(columns=["Province/State", "Lat", "Long"])

#Select India
a[a['Country/Region']=='India']

#Remove catarogical columns completely
b = cases_df.drop(columns=["Province/State", "Country/Region", "Lat", "Long"])

#Plotting India cases numerical columns
plt.figure(figsize=(23,6))
b.iloc[a[a['Country/Region']=='India'].index[0]].plot()

问题是数字列和分类列混合在一起。所以，我先把它们分开了。

如何绘制 python 中一行的聊天记录？

How can I plot line chat of a row in python?

python

data-visualization

matplotlib

dataframe

pandas