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数据如下所示:
1 2 3 4
foo
t0 95 95.5 75.5 85
t1 95.75 95.5 75.5 85
t2 96.5 95.5 75.5 85
t3 96.5 95.5 75.5 85
t4 96.5 95.5 75.5 85
... ... ... ... ...
t9996 95.5 95 75.5 85.5
t9997 95.5 95 75.5 85.5
t9998 95.5 95 75.5 85.5
t9999 95.5 95 75.5 85.5
t10000 95.5 95 75.5 85.5
我想根据索引绘制 4 个时间序列。使用代码:
df.plot(x = 'foo', y = '1')
我收到这个错误:
KeyError: 'foo'
我应该怎么做？