I have the clinical study data.
Year 0 Year 3
Retinol (nmol/L)N Mean +-sd Mean +-sd
Vitamin A group 73 1.89+-0.36 2.06+-0.53
Trace group57 1.83+-0.31 1.78+-0.30
where N is the number of
Use factors with specified levels.
> lev <- letters[1:4]
> table(factor(letters[1:4], levels = lev),
factor(letters[c(1:3,3)], levels = lev))
a b c d
a 1 0 0 0
b 0 1 0 0
c 0 0 1 0
d 0 0 1 0
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On
On 12/2/2006 8:26 PM, Manuel Morales wrote:
> Hello list members,
>
> I'm looking for a way to force the results of a crosstabulation to be
> square - that is, to include 0 values.
>
> For example:
>
> table(letters[1:4],letters[c(1:3,3)])
>
> yields:
> a b c
> a 1 0 0
> b 0 1 0
> c 0
Hello list members,
I'm looking for a way to force the results of a crosstabulation to be
square - that is, to include 0 values.
For example:
table(letters[1:4],letters[c(1:3,3)])
yields:
a b c
a 1 0 0
b 0 1 0
c 0 0 1
d 0 0 1
I would like to return:
a b c d
a 1 0 0 0
b 0 1
On Sat, 2 Dec 2006, Dylan Beaudette wrote:
> Hi Stephano,
Looks like you used my example verbatim
(http://casoilresource.lawr.ucdavis.edu/drupal/node/221)
:)
>From exchanges on R-sig-geo, I believe the original questioner is feeding
NAs to clara, and the error message in clara() is overrunning
Thanks for the suggestions. I have started using R just a few days back. So i
thought I might be missing something and its better to clarify. I was actually
looking for a direct command(like fmincon in Matlab or NMinimize in
Mathematica) which can solve non linear problems straightaway (quadrati
hi to all,
frustated for this error, to day i buy a 1 GB memory slot for my laptop
now it have 1,28GB instead the old 512, but i've the same error :-(
damn!damn!how can i do?
repeat for a little area (about 20X20 km and res=20m) it work fine!
have you any suggestion?
is ther a method for look i
Dear friends, I installed the package âurootâ then I wrote library (uroot)
and I entered a series entitled extp, in spite of that the problem persite. In
short,here are what I wrote and the message that I obtained:
> library(uroot)
> extp=c(1,3,10,14,12,5,8,12,13,15,9,8,7,10,9,7,3,10,3,11,12
This isn't a nonlinear QR problem. You can write:
f <- rq(y ~ log(x), data=Dat, tau=0.25)
which corresponds to the model
Q_y (.25|x) = a log(x) + b
note the sign convention on b.
url:www.econ.uiuc.edu/~rogerRoger Koenker
email [EMAIL PROTECTED]
Hello, Im with a problem in using nonlinear quantile regression, the
function nlrq.
I want to do a quantile regression o nonlinear function in the form
a*log(x)-b, the coefficients a and b is my objective. I try to use the
command:
funx <- function(x,a,b){
res <- a*log(x)-b
res
}
Dat.nlrq
Thanks to Brian Ripley and Roger Bivand for their quick replies to my
question (original post
below). Both politely pointed out that I had failed to check if I
was running the latest version of
R (2.4). I was attempting to download the current version of the
"sp" package, which is not compa
Hi, Prof. Ripley:
>
> But that is a single equality quadratic constraint, and I believe
> 'quadratic constraints' (note, plural) conventionally means multiple
> inequality constraints. That meaning is a hard problem that needs
> specialized software (most likely using interior-point methods
Thank you!!! That was the problem and now it's solved. Thanks for
providing a fresh pair of eyes.
Regards,
Wee-Jin
On 2 Dec 2006, at 15:17, Antonio, Fabio Di Narzo wrote:
>
> here 'steps' is double, was integer in 'lorenz_run'.
>
> --
> Antonio, Fabio Di Narzo
> Ph.D. student at
> Department
On 02-Dec-06 Ethan Johnsons wrote:
> I am getting "Chi-squared approximation may be incorrect in:
> chisq.test(x)" with the data bleow.
>
> Frequency distribution of number of male offspring in families of size
> 5.
> Number of Male Offspring N
> 0 518
>
Hi Stephano,
Looks like you used my example verbatim
(http://casoilresource.lawr.ucdavis.edu/drupal/node/221)
:)
While my approach has not *yet* been published, the original source [4] by
Roger Bivand certainly has. Just a reminder.
That said, I would highly recommend reading up on the backgr
See the last example in ?qplot
On 12/1/06, Rainer M Krug <[EMAIL PROTECTED]> wrote:
> Hi
>
> is it possible to specify the shape of the point to be used in ggplot
> (as with pch in plot)? I couldn't find anything in the help.
>
> Thanks
>
> Rainer
>
> --
> Rainer M. Krug, Dipl. Phys. (Germany), MS
--- Rainer M Krug <[EMAIL PROTECTED]> wrote:
> Hi
>
> is it possible to specify the shape of the point to
> be used in ggplot
> (as with pch in plot)? I couldn't find anything in
> the help.
>
> Thanks
>
> Rainer
I was looking for that the other day while just poking
around with ggplot and d
I am getting "Chi-squared approximation may be incorrect in:
chisq.test(x)" with the data bleow.
Frequency distribution of number of male offspring in families of size 5.
Number of Male OffspringN
0 518
12245
2006/12/2, Wee-Jin Goh <[EMAIL PROTECTED]>:
> Hello,
>
> I'm having more trouble with interfacing with C code. I have a
> function in C that will return the result of its computation as 3
> arrays. The signature of the function is as follows:
>
> void lorenz_run(double x0, double y0, double z0, dou
Hello,
I'm having more trouble with interfacing with C code. I have a
function in C that will return the result of its computation as 3
arrays. The signature of the function is as follows:
void lorenz_run(double x0, double y0, double z0, double h, int steps,
Hi!
> distances <- order(distancevector(scaled_DB, scaled_DB['query',],
> d="euclid"))
Just compute the distances WITHOUT ordering, here. And then
> 1) create a small top_five frame
top = scaled_DB[rank(distances)<=5, ]
rank() is better for this than order() in case there are ties.
>
On 12/2/2006 4:04 AM, Wee-Jin Goh wrote:
> Hello list,
>
> I have a function that I wrote in C to be called in R. I've done that
> using symbol.C, which is the method I came across on the internet.
>
> Now that it's supposed to be deprecated and can be removed in the
> next version of R (!!),
On Sat, 2 Dec 2006, Martin Maechler wrote:
>> "SpG" == Spencer Graves <[EMAIL PROTECTED]>
>> on Fri, 01 Dec 2006 17:29:56 -0800 writes:
>
>SpG> Unless I'm missing something, optimizing a linear
>SpG> function with quadratic constraints is almost trivial
>SpG> with Lan
O yaa... Thank you so much...
-Original Message-
From: Gabor Grothendieck [mailto:[EMAIL PROTECTED]
Sent: Saturday, December 02, 2006 5:56 PM
To: Shubha Vishwanath Karanth
Cc: Shubha Karanth; r-help@stat.math.ethz.ch
Subject: Re: [R] Fwd: Urgent Help in Paste Command
x is the value you a
O yaa... Thank you so much...
From: jim holtman [mailto:[EMAIL PROTECTED]
Sent: Saturday, December 02, 2006 5:58 PM
To: Shubha Vishwanath Karanth
Subject: Re: [R] Fwd: Urgent Help in Paste Command
It is fine since '\' is used to escape characters (like ' a
x is the value you asked for. I think you are confusing its printed
representation
with its value. Try cat(x) and strsplit(x, "")
On 12/2/06, Shubha Vishwanath Karanth <[EMAIL PROTECTED]> wrote:
> But when I do this I need x value to be " C:\Program
> Files\R\R-2.4.0\bin\Rgui.exe" and not C:\\Pr
But when I do this I need x value to be " C:\Program
Files\R\R-2.4.0\bin\Rgui.exe" and not C:\\Program
Files\\R\\R-2.4.0\\bin\\Rgui.exe"
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Gabor
Grothendieck
Sent: Saturday, December 02, 2006 5:21 PM
To: Shubha
Try this:
> x <- readline()
C:\Program Files\R\R-2.4.0\bin\Rgui.exe
> x
[1] "C:\\Program Files\\R\\R-2.4.0\\bin\\Rgui.exe"
You can also use
readLines("clipboard")
if you are trying to read in something from the clipboard.
On 12/2/06, Shubha Karanth <[EMAIL PROTECTED]> wrote:
> Hi Experts
At 04:40 02/12/2006, Duncan Murdoch wrote:
>On 12/1/2006 11:00 PM, Wei-Wei Guo wrote:
>>Dear All,
>>I have worked with R for some time. It's a great tool for data
>>analysis. But it's too hard to inputing raw data manually with R (I
>>don't mean importing data. R is good at importing data). Maybe
Hi Experts,
I want to see my object as below:
'C:\Program Files\R\R-2.4.0\bin\Rgui.exe'
So I use the paste command. None of the below is working. Could anyone help
me on this?
> paste("'C:\Program Files\R\R-2.4.0\bin\Rgui.exe'")
[1] "'C:Program FilesRR-2.4.0\binRgui.exe'"
> paste("'C:","\",
Try :
environment(f) <- baseenv()
There is also emptyenv() depending on what you want.
See ?baseenv
On 12/2/06, Carmen Meier <[EMAIL PROTECTED]> wrote:
> Hi To all,
> I found in the tread
> http://finzi.psych.upenn.edu/R/Rhelp02a/archive/46740.html
>
> the reply for
>
> /> y <- 3 /
> /> f <-
Hi To all,
I found in the tread
http://finzi.psych.upenn.edu/R/Rhelp02a/archive/46740.html
the reply for
/> y <- 3 /
/> f <- function(x) y /
/> environment(f) <- NULL /
/> f(1)
/but this example (R 2.4.0) will cause an error:
The use of the NULL environment is not longer possible (translated)
T
> "SpG" == Spencer Graves <[EMAIL PROTECTED]>
> on Fri, 01 Dec 2006 17:29:56 -0800 writes:
SpG> Unless I'm missing something, optimizing a linear
SpG> function with quadratic constraints is almost trivial
SpG> with Langrange multipliers.
yes. Good point, let's hope w
Hello list,
I have a function that I wrote in C to be called in R. I've done that
using symbol.C, which is the method I came across on the internet.
Now that it's supposed to be deprecated and can be removed in the
next version of R (!!), what up-to-date method that replaces symbol.C?
cheers
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