我有一个pandas数据框,它是一个布尔值的方格,索引和列是628个选区的名字,这些选区有邻居。例如
protected override bool Receive(object message)
{
// if the message is a previously persisted event, update our internal list
var e = message as MyEvent;
if (e != null) _events.Add(e);
return true;
// if the message is a request for a view model, read from our list of stored events
var r = message as ReadRequest;
if (r == null) return false;
Sender.Tell(new ViewModel(_events));
return true;
}
因此,曼彻斯特中心的比赛与曼彻斯特戈顿相邻,但不是曼彻斯特的英格兰队。
In[18]: adjacents.index
Out[18]:
Index(['Aberavon', 'Aberconwy', 'Aberdeen North', 'Aberdeen South',
'Aberdeenshire West & Kincardine', 'Airdrie & Shotts', 'Aldershot',
'Aldridge-Brownhills', 'Altrincham & Sale West', 'Alyn & Deeside',
...
'Wrekin, The', 'Wrexham', 'Wycombe', 'Wyre & Preston North',
'Wyre Forest', 'Wythenshawe & Sale East', 'Yeovil', 'York Central',
'York Outer', 'Yorkshire East'],
dtype='object', length=628)
In[19]: adjacents.columns
Out[19]:
Index(['Aberavon', 'Aberconwy', 'Aberdeen North', 'Aberdeen South',
'Aberdeenshire West & Kincardine', 'Airdrie & Shotts', 'Aldershot',
'Aldridge-Brownhills', 'Altrincham & Sale West', 'Alyn & Deeside',
...
'Wrekin, The', 'Wrexham', 'Wycombe', 'Wyre & Preston North',
'Wyre Forest', 'Wythenshawe & Sale East', 'Yeovil', 'York Central',
'York Outer', 'Yorkshire East'],
dtype='object', length=628)
返回In[20]: adjacents['Manchester Central']['Manchester Withington']
Out[20]: False
In[21]: adjacents['Manchester Central']['Manchester Gorton']
Out[21]: True
行中所有列的列名的最佳方法是什么? (我认为这可能与True
有关,但无法弄明白。)
答案 0 :(得分:1)
嗯,你可以这样做,但由于你的矩阵似乎是symmetric,你最好找到行名,因为这更简单:
adjacents[adjacents['Manchester Central']].index
BTW - 访问表格中的确切位置时,最好使用loc
:
adjacents.loc['Manchester Central', 'Manchester Gorton']