[R] List of Variables in Original Order

[arun]

HI, 
May be this helps you: 
set.seed(1) 
 mat1<-matrix(rnorm(60,5),nrow=5,ncol=12) 
colnames(mat1)<-paste0("Var",1:12) 
vec2<-format(c(1,cor(mat1[,1],mat1[,2:12])),digits=4) 
vec3<-colnames(mat1) 
arr2<-array(rbind(vec3,vec2),dim=c(2,3,4)) 
res<-data.frame(do.call(rbind,lapply(1:dim(arr2)[3],function(i) arr2[,,i]))) 
 res 
#        X1       X2       X3 
#1     Var1     Var2     Var3 
#2  1.00000  0.27890 -0.61497 
#3     Var4     Var5     Var6 
#4  0.24916 -0.76155  0.30853 
#5     Var7     Var8     Var9 
#6 -0.46413  0.79287  0.05191 
#7    Var10    Var11    Var12 
#8 -0.06940 -0.53251  0.06766 

A.K. 


----- Original Message -----
From: rkulp <rkulp at charter.net>
To: r-help at r-project.org
Cc: 
Sent: Thursday, September 27, 2012 6:26 PM
Subject: [R] List of Variables in Original Order

I am trying to Sweave the output of calculating correlations between one
variable and several others. I wanted to print a table where the
odd-numbered rows contain the variable names and the even-numbered rows
contain the correlations. So if VarA is correlated with all the variables in
mydata.df, then it would look like

var1        var2      var3 
corr1      corr2     corr3
var4       var5        var6
corr4     corr5     corr6
.
.
etc.
I tried using a matrix for the correlations and another one for the variable
names. I built the correlation matrix using 
x = matrix(format(cor(mydata.df[,1],mydata.df[,c(2:79)]),digits=4),nc=3) 
and the variable names matrix using 
y = matrix(ls(mydata.df[c(2:79)]),nc=3). 
The problem is the function ls returns the names in alphabetical order,
columnar order.
How do I get the names in columnar order? Is there a better way to display
the correlation of a single variable with a large number of other variables?
If there is, how do I do it? I appreciate any help I can get. This is my
first project in R so I don't know much about it yet.



--
View this message in context: http://r.789695.n4.nabble.com/List-of-Variables-in-Original-Order-tp4644436.html
Sent from the R help mailing list archive at Nabble.com.

______________________________________________
R-help at r-project.org 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.