Python Matplotlib绘图绘制直线，不'；不显示正确的y值

我想在x轴上绘制季节，在y轴上绘制果岭。绘图显示不正确，如下所示：

如何让matplotlib绘制正确的y轴值

import pandas as pd
from matplotlib import pyplot as plt

pga = pd.read_csv('/Users/dpericks/Desktop/PGA_Data_Historical.csv')
dj = pga[(pga['Player Name'] == 'Dustin Johnson')
    & (pga['Variable'] == 'Greens in Regulation Percentage - (%)')]
plt.plot(dj['Season'], dj['Value'])

当我调试您的代码时，我意识到我们从

dj['Value']

获得

string-type

变量。我必须将这些值转换为适当的数值，以便

matplotlib

可以使用它们。我希望这有助于解决你的问题

import pandas as pd
from matplotlib import pyplot as plt

pga = pd.read_csv('PGA_Data_Historical.csv')
dj = pga[(pga['Player Name'] == 'Dustin Johnson')
    & (pga['Variable'] == 'Greens in Regulation Percentage - (%)')]
dj_numberic_values_ = pd.to_numeric(dj['Value'])
plt.plot(dj['Season'], dj_numberic_values_)
plt.show()