On 13-12-15 6:48 AM, 水静流深 wrote:
x=read.table(text="
+ Qtr1 Qtr2 Qtr3 Qtr4
+ 2010 1.8 8.0 6.0 3.0
+ 2011 2.0 11.0 7.0 3.5
+ 2012 2.5 14.0 8.0 4.2
+ 2013 3.0 15.2 9.5 5.0",sep="",header=TRUE)
x
Qtr1 Qtr2 Qtr3 Qtr4
2010 1.8 8.0 6.0 3.0
2011 2.0 11.0 7.0 3.5
2012 2.5 14.0 8.0 4.2
2013 3.0 15.2 9.5 5.0
as.vector(x)
Qtr1 Qtr2 Qtr3 Qtr4
2010 1.8 8.0 6.0 3.0
2011 2.0 11.0 7.0 3.5
2012 2.5 14.0 8.0 4.2
2013 3.0 15.2 9.5 5.0
class(as.vector(x))
[1] "data.frame"
Data frames are lists, which are already vectors.
Duncan Murdoch
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