On Nov 15, 2011, at 11:02 AM, haohao Tsing wrote:
hi R,users
Now I read a data from a txt file
newdata<-read.table("1.txt")
in the 1.txt ,there are several column shown as below
1 3 4 5
2 3 5 6
4 5 6 7
so when I want analysis the second column
anadata<-newdata$V2
but my question I can not use
On Tue, Nov 15, 2011 at 11:23 AM, Joshua Wiley wrote:
> Hi,
>
> Look at ?"["
>
> anadata <- newdata[, cmn]
> ## i.e., extract all rows (the first argument is empty of the 2 column
> anadata <- newdata[, 2]
Or, if this is part of a more general problem and the column names are
not necessarily in s
Hi,
Look at ?"["
anadata <- newdata[, cmn]
## i.e., extract all rows (the first argument is empty of the 2 column
anadata <- newdata[, 2]
Hope this helps,
Josh
On Tue, Nov 15, 2011 at 8:02 AM, haohao Tsing wrote:
> hi R,users
> Now I read a data from a txt file
> newdata<-read.table("1.txt")
hi R,users
Now I read a data from a txt file
newdata<-read.table("1.txt")
in the 1.txt ,there are several column shown as below
1 3 4 5
2 3 5 6
4 5 6 7
so when I want analysis the second column
anadata<-newdata$V2
but my question I can not use some certain variable to indice the column?
e.g
cmn=2
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