Displaying 2 results from an estimated 2 matches for "anadata".
Did you mean:
nadata
2011 Nov 15
3
how to indice the column in the data.frame
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$V2
but my question I can not use some certain variable to indice the column?
e.g
cmn=2
anadata<-newdata$Vcmn
how can I finish this command ?can anyone help me ? thank yo .
[[alternative HTML version deleted]]
2011 Aug 18
1
can i use a variable to describe the dimension name of a data.frame?
for example:
a data.frame
data
V1 V2 V3
1 2 3
4 5 6
If I want to calculate the V2
I can get data$V2
But now I want to calculate the dimension name and then analysis the data.
for example
No=3*x ;x=1,2,3,...n
anadata=data$VNo
How could I do?
--
TANG Jie
[[alternative HTML version deleted]]