Bruce,
You don't tell us what class of data your y is. Assuming y is defined
in your enviroment, what does
class(y)
and
str(y)
tell you? You'll most likely have to fine-tune your data reading
process, or do some post-processing to make sure the y object (and x for
that matter) are the classes you want.
And as always,
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
You can give us samples of your data with the dput function, see ?dput.
Bruce Kindseth wrote:
I am trying to learn R, and am having problems with doing a simple linear
regression. I loaded data from a fixed width file, using wd=c(...), and
read.fwf(...) and I can read in the file ok and it comes in as vectors in
columns, which is what I expected. The problem is when I try to do a linear
regression, lm=(y~x), I get the following error message, "Error in
model.frame.default(formula = y ~ x, drop.unused.levels = TRUE) :
invalid type (list) for variable 'y'
I tried various things, such as wd=numeric(c(..)), unlist(y) and putting x
and y in a data frame and attaching it, but nothing helps. I have searched
through 3 online manuals, but can't seem to find an answer. Maybe this is
so simple that nobody felt the need to address it.
Thanks for your help.
B.Kindseth
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and provide commented, minimal, self-contained, reproducible code.
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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
