我正在尝试绘制一个pandas系列变量,该变量在第一列中具有数字ID,在下一列中具有该ID的频率。我希望将这两幅图绘制为条形图,在y轴上显示频率,id为no。在x轴上但是,行太多,即ID号。有没有办法我只能绘制出最常出现的前10个ID?
执行此代码-area_count.plot.bar
给出此错误-
<bound method SeriesPlotMethods.bar of
<pandas.plotting._core.SeriesPlotMethods object at 0x0000019C68029908>>
我尝试使用以下代码将本系列的前20个值存储到另一个变量中:
for i in range(1,20):
f[i,:] = area_count[i,:]
但是它显示了此错误:
ValueError Traceback (most recent call last)
<ipython-input-88-1020cb7bdfc3> in <module>
1 for i in range(1,20):
----> 2 f[i,:] = area_count[i,:]
~\Anaconda3\lib\site-packages\pandas\core\series.py in __getitem__(self, key)
909 key = check_bool_indexer(self.index, key)
910
--> 911 return self._get_with(key)
912
913 def _get_with(self, key):
~\Anaconda3\lib\site-packages\pandas\core\series.py in _get_with(self, key)
921 elif isinstance(key, tuple):
922 try:
--> 923 return self._get_values_tuple(key)
924 except Exception:
925 if len(key) == 1:
~\Anaconda3\lib\site-packages\pandas\core\series.py in _get_values_tuple(self, key)
966
967 if not isinstance(self.index, MultiIndex):
--> 968 raise ValueError('Can only tuple-index with a MultiIndex')
969
970 # If key is contained, would have returned by now
ValueError: Can only tuple-index with a MultiIndex