Plot 来自 matplotlib 和 pandas 无法处理数据 Z466DEEC76ECDF5FCA6D38571F6324 因为 ValueError 文件

Question

I tried generate a simple plot, but error here. My code:

import matplotlib.pyplot as plt
import numpy as np
import pandas as pd


real_estates = pd.read_json('/Users/pablo/Desktop/project/REscraper/real_estates.json')

# print(real_estates)

plt.plot(real_estates.size, real_estates.price)

plt.show()

real_estates.json

[
{"price": 298000.0, "size": 47.45, "rooms": 3, "price_per_square_meter": 6280.0},
{"price": 599000.0, "size": 73.0, "rooms": 2, "price_per_square_meter": 8205.0},
[...]
]

Error:

ValueError: x and y must have same first dimension, but have shapes (1,) and (2500,)

Someone can help?

Answer 1

size happens to be an attribute of a DataFrame. Use a subscription or .loc to select the column

plt.plot(real_estates['size'], real_estates['price'])
# or
plt.plot(real_estates.loc[:,'size'], real_estates.loc[:,'price'])

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Indexing and selecting data