R收集權益數據 - 添加時間和價格

我有一些數據格式如下。我已經對此進行了一些分析，並希望能夠將分析數據與同一圖表中的價格發展進行比較。這需要我具有相同的x軸數據。R收集權益數據 - 添加時間和價格

因此，我想彙總「股票」列中的150個增量，並添加「最終價格」和「時間」。聚合應該包括最新的時間和價格，所以如果聚合需要發生在兩行或更多行數據上，那麼最後一行應該提供價格和時間數據。

我的問題是如何創建一個新的向量與每行150股。矢量的長度等於總和（份額）/ 150。

有沒有簡單的方法來做到這一點？提前致謝。

編輯：我想過使用rep（finalprice，shares）擴展觀測值，然後獲取擴展向量的每個第150個值。

數據樣本：

"date","ord","shares","finalprice","time","stock" 
20120702,E,2000,99.35,540.84753333,500 
20120702,E,28000,99.35,540.84753333,500 
20120702,E,50,99.5,542.03073333,500 
20120702,E,13874,99.5,542.29411667,500 
20120702,E,292,99.5,542.30191667,500 
20120702,E,784,99.5,542.30193333,500 
20120702,E,13300,99.35,543.04805,500 
20120702,E,16658,99.35,543.04805,500 
20120702,E,42,99.5,543.04805,500 
20120702,E,400,99.4,546.17173333,500 
20120702,E,100,99.4,547.07,500 
20120702,E,2219,99.3,549.47988333,500 
20120702,E,781,99.3,549.5238,500 
20120702,E,50,99.3,553.4052,500 
20120702,E,1500,99.35,559.86275,500 
20120702,E,103,99.5,567.56726667,500 
20120702,E,1105,99.7,573.93326667,500 
20120702,E,4100,99.5,582.2657,500 
20120702,E,900,99.5,582.2657,500 
20120702,E,1024,99.45,582.43891667,500 
20120702,E,8214,99.45,582.43891667,500 
20120702,E,10762,99.45,582.43895,500 
20120702,E,1250,99.6,586.86446667,500 
20120702,E,5000,99.45,594.39061667,500 
20120702,E,20000,99.45,594.39061667,500 
20120702,E,15000,99.45,594.39061667,500 
20120702,E,4000,99.45,601.34491667,500 
20120702,E,8700,99.45,603.53608333,500 
20120702,E,3290,99.6,609.23213333,500

來源

2012-12-12 Morten

我覺得我得到了解決。

expand <- rep(finalprice, shares) 

Increment <- expand[seq(from = 1, to = length(expand), by = 150)]

來源

2012-12-12 12:57:05 Morten

R收集權益數據 - 添加時間和價格

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