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我的季節時間是次年的10月1日至3月31日。我如何創建一個賽季一個虛擬變量來看到這個人在進出在R中創建季節變量
df <- data.frame(ID= c(1:6),
Drug = c("A","C","A","A","B","A"),
Start = c("01/01/2009","07/10/2010","10/10/2009","03/01/2011","03/01/2012","04/12/2010"),
End=c("09/10/2009","04/20/2011","07/20/1010","01/01/2012","04/01/2013","09/30/2011"))
我的輸出曝光:
ID Drug Start End Season
1 1 A 01/01/2009 09/10/2009 1
2 1 A 01/01/2009 09/10/2009 0
3 2 C 07/10/2010 04/20/2011 0
4 2 C 07/10/2010 04/20/2011 1
5 2 C 07/10/2010 04/20/2011 0
6 3 A 10/10/2009 07/20/1010 1
7 3 A 10/10/2009 07/20/1010 0
8 3 A 10/10/2009 07/20/1010 1
9 4 B 03/01/2011 01/01/2012 1
10 4 B 03/01/2011 01/01/2012 0
11 4 B 03/01/2011 01/01/2012 1
12 5 A 03/01/2012 04/01/2013 1
13 5 A 03/01/2012 04/01/2013 0
14 5 A 03/01/2012 04/01/2013 1
15 5 A 03/01/2012 04/01/2013 0
16 6 A 04/12/2010 09/30/2011 0
ID 1:她從01/01和09/10末開始。
[01/01, 03/31] =1
[03/31,09/10] = 0
ID 2:她從07/10/10開始,04/20結束。我檢查
[07/10, 10/01] = 0
[10/01,03/31] = 1
[03/31, 04/20] = 0
ID5她開始03/01和04/01結束
[03/01, 03/31]= 1
[03/31, 10/01] = 0
[10/01, 03/31] = 1
[03/31, 04/01] = 0
我不清楚你在問什麼。因此,患者2獲得了三排季節0,1,0,因爲她在賽季外開始,經歷了賽季,並在賽季之外結束了賽季? – lebelinoz
患者5獲得四排,因爲她經歷了四個時期(兩個賽季和兩個淡季)? – lebelinoz
她從07/10/2010開始到2011年4月20日結束,因此我檢查[07/10,10/01] = 0,然後[10/1,03/31] = 1,[03/31/04/20] = 0 – BIN