cbind question, please
You could do something tricky like
> do.call(cbind, lapply(big.char, as.name))
dog cat tree
[1,] 1 2 5
[2,] 2 3 6
[3,] 3 4 7
but you are usually better off creating these things as part of a list
and passing that to do.call(cbind, list).
There is a slight danger of using do.call with cbind. If your
list has a component with the unlikely name 'deparse.level',
then that will be taken as cbind's deparse.level argument,
not as a column of the matrix to be made.
Bill Dunlap
TIBCO Software
wdunlap tibco.com
On Thu, Apr 23, 2015 at 3:41 PM, Erin Hodgess <erinm.hodgess at gmail.com>
wrote:
Hello!
I have a cbind type question, please: Suppose I have the following:
dog <- 1:3
cat <- 2:4
tree <- 5:7
and a character vector
big.char <- c("dog","cat","tree")
I want to end up with a matrix that is a "cbind" of dog, cat, and tree.
This is a toy example. There will be a bunch of variables.
I experimented with "do.call", but all I got was
1
2
3
Any suggestions would be much appreciated. I still think that do.call
might be the key, but I'm not sure.
R Version 3-1.3, Windows 7.
Thanks,
Erin
--
Erin Hodgess
Associate Professor
Department of Mathematical and Statistics
University of Houston - Downtown
mailto: erinm.hodgess at gmail.com
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