I have the statement and I really don't understand the s= part. I know it sets the area of the plot but is it taking the data from pop_2007 and raising it to 1^6 to create the area ?

df.plot(kind='scatter', x='gdp_2007', y='lifeExp_2007', s=df['pop_2007']/1e6)

I'm trying to understand the area of a plot better and the s=

CodePudding user response：

The 's' parameter in the pandas dataframe plot function is changing the size of the markers in your scatter plot. See these two outputs where I change the 's' value from 1 to 100. So right now, your plot is taking the value in the df['pop_2007'] column and dividing it by 1e6 to get your value for the marker size.

#Three lines to make our compiler able to draw:
import sys
import matplotlib
matplotlib.use('Agg')

import pandas as pd
import matplotlib.pyplot as plt

df = pd.read_csv('data.csv')

df.plot(kind = 'scatter', x = 'Duration', y = 'Maxpulse', s=1)

plt.show()

#Two  lines to make our compiler able to draw:
plt.savefig(sys.stdout.buffer)
sys.stdout.flush()

Plot with s=1

#Three lines to make our compiler able to draw:
import sys
import matplotlib
matplotlib.use('Agg')

import pandas as pd
import matplotlib.pyplot as plt

df = pd.read_csv('data.csv')

df.plot(kind = 'scatter', x = 'Duration', y = 'Maxpulse', s=100)

plt.show()

#Two  lines to make our compiler able to draw:
plt.savefig(sys.stdout.buffer)
sys.stdout.flush()

Plot with s=100

Test it out here: https://www.w3schools.com/python/pandas/trypandas.asp?filename=demo_pandas_plot_scatter2