Hello,
This is likely fairly silly question, and I apologize to whomever takes the
time to respond.
I am a relatively new user of R, on Windows XP, version 2.3.1.
Say I have a data table that looks like the following:
x
Date Location Amount Blue Green
1 01/01/2001 Central 1817 TRUE FALSE
2 01/02/2001 Central 20358 FALSE TRUE
3 05/08/2001 Central 16245 FALSE TRUE
4 02/02/2002 Western 112 TRUE FALSE
5 21/03/2002 Western 98756 TRUE FALSE
6 01/04/2002 Western 1598414 FALSE TRUE
7 07/01/2001 Western 1255 FALSE TRUE
8 20/10/2003 Central 16289 TRUE FALSE
9 21/10/2003 Eastern 10000 FALSE TRUE
10 22/10/2003 Eastern 98737 FALSE TRUE
11 23/10/2003 Eastern 198756 TRUE FALSE
12 24/10/2003 Eastern 98756 FALSE TRUE
13 25/10/2003 Eastern 65895 TRUE FALSE
14 26/10/2003 Eastern 2142266 FALSE TRUE
15 27/10/2003 North 98756 TRUE FALSE
16 28/10/2003 North 548236 FALSE TRUE
and I want to do some summaries by Fiscal year (or FY quarter).
Reading manuals and such, I cobbled this less than satisfactory bit together
to start to build a factor representing a fiscal year split:
y<-as.Date(x$Date,"%d/%m/%Y")
y<-as.matrix(y)
y$FY0203<-ifelse((y>=(as.Date("2002-03-21")))&(y<=(as.Date
("2003-04-01"))),"TRUE","FALSE")
the values seem correct, but aside from ugly, the data is not in the proper
format - with some more effort I might fix that... But my question is: is
there a more simple function available to select a range of dates? Or, at
least, a more elegant approach?
[[alternative HTML version deleted]]
______________________________________________
R-help@stat.math.ethz.ch mailing list
https://stat.ethz.ch/mailman/listinfo/r-help
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
