I recently compared two different approaches to calculating the correlation of
two variables, and I cannot explain the different results:
data(cars)
model - lm(dist~speed,data=cars)
coef(model)
fitted.right - model$fitted
fitted.wrong - -17+5*cars$speed
When using the OLS fitted values, the
Hi,
try
cor(fitted.right,fitted.wrong)
should give 1 as both are a linear function of speed! Hence
cor(cars$dist,fitted.right)^2 and cor(x=cars$dist,y=fitted.wrong)^2 must be the
same.
HTH
d
Feladó: R-help [r-help-boun...@r-project.org] ;
Harold,
Obviously the bottleneck is your objective function fn(). I have speeded up
your function by a factor of about 2.4 by using `outer' instead of sapply. I
think it can be speeded much more. I couldn't figure it out without spending a
lot of time. I am sure someone on this list-serv
Of course! Thank you, I knew I was missing something painfully obvious. Its
seems, then, that this line
1-sum((cars$dist-fitted.wrong)^2)/sum((cars$dist-mean(cars$dist))^2)
is finding something other than the traditional correlation. I found this in a
lecture introducing correlation, but ,
If you are reading the data frame using for instance read.csv, you can put
in the argument na.string =.
Another way to do that is data[data ==] - NA.
It should be good to tell us how you are reading your dataset.
On Feb 21, 2015 6:49 AM, Jeff Newmiller jdnew...@dcn.davis.ca.us wrote:
On 21 Feb 2015, at 18:01 , Erin Hodgess erinm.hodg...@gmail.com wrote:
This is not for CRAN, just for someone else.
It doesn't need to be submitted.
As I understand it, it doesn't need to be submitted in order to be submitted...
(to CRAN, winbuilder respectively).
Just make sure it
On Fri, Feb 20, 2015 at 6:56 PM, Rolf Turner r.tur...@auckland.ac.nz wrote:
On 21/02/15 15:02, Jeff Newmiller wrote:
R CMD INSTALL --build packagename
That will create a *.tar.gz file, not a *.zip file. The latter being
what Erin wanted, if I understand correctly.
It depends on her
This is not for CRAN, just for someone else.
It doesn't need to be submitted.
Thanks,
Erin
On Sat, Feb 21, 2015 at 2:56 AM, Prof Brian Ripley rip...@stats.ox.ac.uk
wrote:
On 21/02/2015 07:31, Jeff Newmiller wrote:
On Windows it builds a zip file. If you are on Linux, you might [1] need
What is a compiled zip? There is a warning against using that term in section
1 of the Writing R Extensions documentation, along with a discussion of why it
is ambiguous at best. Can you read that and clarify your statement?
Since you make this assertion that R CMD INSTALL --build does not do
I have Windows, but the R CMD INSTALL --build pack does not produce a
compiled zip.
Thanks,
Erin
On Sat, Feb 21, 2015 at 1:49 PM, Peter Langfelder
peter.langfel...@gmail.com wrote:
On Fri, Feb 20, 2015 at 6:56 PM, Rolf Turner r.tur...@auckland.ac.nz
wrote:
On 21/02/15 15:02, Jeff
On 21/02/2015 2:47 PM, Erin Hodgess wrote:
I have Windows, but the R CMD INSTALL --build pack does not produce a
compiled zip.
What does it do? Can you show us a transcript?
Duncan Murdoch
Thanks,
Erin
On Sat, Feb 21, 2015 at 1:49 PM, Peter Langfelder
peter.langfel...@gmail.com
11 matches
Mail list logo
