绘制matplotlib聚合数据python

Question

I need plot of aggregrated data

import pandas as pd
basic_data= pd.read_csv('WHO-COVID-19-global-data _2.csv',parse_dates= ['Date_reported'] )
cum_daily_cases = basic_data.groupby('Date_reported')[['New_cases']].sum()

import pylab
x = cum_daily_cases['Date_reported']
y = cum_daily_cases['New_cases']
pylab.plot(x,y)
pylab.show()

Error: 'Date_reported'

Input: Date_reported, Country_code, Country, WHO_region, New_cases, Cumulative_cases, New_deaths, Cumulative_deaths 2020-01-03,AF,Afghanistan,EMRO,0,0,0,0

Output: the total quantity of "New cases" showed on the plot per day.

What should I do to run this plot? link to dataset

Answer 1

The column names contain a leading space (can be easily seen by checking basic_data.dtypes ). Fix that by adding the following line immediately after basic_data was read:

basic_data.columns = [s.strip() for s in basic_data.columns]

In addition, your x variable should be the index after groupby-sum , not a column Date_reported . Correction:

x = cum_daily_cases.index

The plot should show as expected.