ValueError: hist method requires numerical columns, nothing to plot

Question

I was going through a tutorial, but as I was running the code in an IDE, an error occurred. The link to the tutorial is here: https://thecleverprogrammer.com/2020/12/29/house-price-prediction-with-python/. This is the code I have so far: First cell:

import pandas as pd
url = "https://raw.githubusercontent.com/ageron/handson-ml/master/datasets/housing/housing.csv"
names = ['longitude','latitude','housing_median_age','total_rooms','total_bedrooms',         'population','households','median_income','median_house_value','ocean_proximity']
housing = pd.read_csv(url, names=names)
housing.head()

Second cell:

housing.info()

Third cell:

housing.ocean_proximity.value_counts()

Fourth cell:

import matplotlib.pyplot as plt
housing.hist(bins=50,figsize=(10, 8))
plt.show()

It's in the second line of the fourth cell that I have an error. As the title states, the compiler says ValueError: hist method requires numerical columns, nothing to plot. Why is this?

Answer 1

Because the data type in your dataframe is not numeric, you can use info() to view the data type. If the data type is "object", you cannot draw a picture. You can try to convert the data into "float" or "int" and then use hist()