Hello,
Simply assign the output of a function to a variable:
xyzuvw <- importdata(...)
and then use that output. In this case, a data.frame with, among others,
vectors 'x' and 'y'.
You need to read an R introductory text. I recommend An Introduction to
R, file R-intro.pdf in your doc directory.
Rui Barradas
Em 12-06-2013 00:59, John McDermott escreveu:
Hello,
Thanks for the help!
Your answer resolved my problem with the function I listed, but brought up
a larger question. How is the output of the importdata function stored for
use with other functions (as in, how do I call on that data for use with
other functions)? As a simple example I have another function:
meanXY = function(xyzuvw) {
xy = c(mean(xyzuvw$x), mean(xyzuvw$y))
return(xy)
}
I know that the xyzuvw portion is referring to the output of the
importdata function, but I don't know how to call up the necessary data
(hope this makes sense).
Thanks again for the help!
John
On 6/11/13 3:05 PM, "Rui Barradas" <ruipbarra...@sapo.pt> wrote:
Hello,
I believe you are making a confusion on how to call a function in R. You
don't replace the argument in the function declaration. what you do is
to call the function like this:
importdata("~/path to/filename.xyzuvwrgb")
leaving the function definition alone.
Hope this helps,
Rui Barradas
Em 11-06-2013 19:52, John McDermott escreveu:
Hi R-helpers,
I inherited some code that I'm trying to use. As a very new R user I'm
having some confusion.
I have some input files in the form: filename.xyzuvwrgb which I'm
trying to
import using:
importdata = function(filename) {
p = scan(filename,what=list(x = double(), y = double(), z =
double(), u
= double(),v=double(),w=double()),skip=1,flush=TRUE,sep=" ")
return(data.frame(x=p$x, y=p$y, z=p$z, u=p$u, v=p$v, w=p$w))
}
For the filename I replaced both with "~/path to/filename.xyzuvwrgb"
and I
get the following errors:
Error: unexpected string constant in "importdata =
function("~/Desktop/thrustScarp1.xyzuvw""
Error: no function to return from, jumping to top level
Error: unexpected '}' in "}"
I'm assuming it has to do with how I am using/formatted the
function(filename) portion. How can I get this to work?
Thanks for the help!
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