Hi Jim,

   Wow ! And it does exactly what I was looking for.  Thank you very much.

That assign function is pretty nice. I should become more familiar with it.

Matthew


On 7/11/2016 5:59 PM, Jim Lemon wrote:
Hi Matthew,
This question is a bit mysterious as we don't know what the object
"chr" is. However, have a look at this and see if it is close to what
you want to do.

# set up a little matrix of character values
tTargTFS<-matrix(paste("A",rep(1:4,each=4),"B",rep(1:4,4),sep=""),ncol=4)
# try the assignment on the first row and column
assign(tTargTFS[1,1],tTargTFS[-1,1])
# see what it looks like - okay
A1B1
# run the assignment over the matrix
for(i in 1:4) assign(tTargTFS[1,i],tTargTFS[-1,i])
# see what the variables look like
A1B1
A2B1
A3B1
A4B1

It does what I would expect.

Jim


On Tue, Jul 12, 2016 at 6:01 AM, Matthew
<mccorm...@molbio.mgh.harvard.edu> wrote:
I want to get a value that has been assigned to a variable, and then use
that value to be the name of a variable.

For example,

tTargTFS[1,1]
# returns:
                 V1
"AT1G01010"

Now, I want to make AT1G01010 the name of a variable:
AT1G01010 <- tTargTFS[-1,1]

Then, go to the next tTargTFS[1,2]. Which produces
                V1
"AT1G01030"
And then,
AT1G01030 <- tTargTFS[-1,2]

I want to do this up to tTargTFS[1, 2666], so I want to do this in a script
and not manually.
tTargTFS is a list of 2: chr [1:265, 1:2666], but I also have the data in a
data frame of 265 observations of 2666 variables, if this data structure
makes things easier.

My initial attempts are not working. Starting with a test data structure
that is a little simpler I have tried:
for (i in 1:4)
{ ATG <- tTargTFS[1, i]
assign(cat(ATG), tTargTFS[-1, i]) }

Matthew

______________________________________________
R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
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.

______________________________________________
R-help@r-project.org mailing list -- To UNSUBSCRIBE and more, see
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.

Reply via email to