Displaying 20 results from an estimated 6000 matches similar to: "R/S-Plus equivalent to Genstat "predict""
2005 Oct 06
2
R/S-Plus equivalent to Genstat "predict": predictions over "averages" of covariates
Hi all
I'm doing some things with a colleague comparing different
sorts of models. My colleague has fitted a number of glms in
Genstat (which I have never used), while the glm I have
been using is only available for R.
He has a spreadsheet of fitted means from each of his models
obtained from using the Genstat "predict" function. For
example, suppose we fit the model of the type
2005 Dec 28
2
Importing Genstat files into R
Does anyone know if there is a package or other method of reading Genstat
files directly into R. Genstat isn't listed in the foreign package.
Many thanks,
Graham
[[alternative HTML version deleted]]
2009 Apr 08
1
Genstat into R - Randomisation test
Hello everybody,
I have a question. I would like to get a correlation between
constitutive and induced plant defence which I messured on 30 plant
species. So I have table with Species, Induced defence (ID), and
constitutive defence (CD). Since Induced and constitutive defence are
not independant (so called spurious correlation) I should do a
randomisation test. I have a syntax of my
2011 Dec 19
1
pls help to print out first row of terms(model) output in example program
Greetings.
I've written a convenience function for multicollinearity diagnosis.
I'd like to report to the user the formula that is used in a
regression. I get output like this:
> mcDiagnose(m1)
[1] "The following auxiliary models are being estimated and returned in a list:"
[1] "`x1` ~ ."
formula(fmla)()
[1] "`x2` ~ ."
I'd like to fill in the period
2005 Aug 12
1
Help converting a function from S-Plus to R: family$weight
Hi all
I am converting an S-Plus function into R. The S-Plus code
uses some of the glm families, and family objects.
The family objects in S-Plus and R have many different
features, for example:
In R:
> names(Gamma())
[1] "family" "link" "linkfun" "linkinv" "variance"
[6] "dev.resids" "aic"
2011 May 31
1
Problem with % in an example when running R CMD check
Using
platform x86_64-pc-linux-gnu
arch x86_64
os linux-gnu
system x86_64, linux-gnu
status
major 2
minor 13.0
year 2011
month 04
2012 Mar 14
0
using predict() with poly(x, raw=TRUE)
Dear r-devel list members,
I've recently encountered the following problem using predict() with a model
that has raw-polynomial terms. (Actually, I encountered the problem using
model.frame(), but the source of the error is the same.) The problem is
technical and concerns the design of poly(), which is why I'm sending this
message to r-devel rather than r-help.
To illustrate:
2006 May 30
0
(PR#8905) Recommended package nlme: bug in predict.lme when an independent variable is a polynomial
Many thanks for your very useful comments and suggestions.
Renaud
2006/5/30, Prof Brian Ripley <ripley at stats.ox.ac.uk>:
> On Tue, 30 May 2006, Prof Brian Ripley wrote:
>
> > This is not really a bug. See
> >
> > http://developer.r-project.org/model-fitting-functions.txt
> >
> > for how this is handled in other packages. All model-fitting in R used =
2006 May 27
1
Recommended package nlme: bug in predict.lme when an independent variable is a polynomial (PR#8905)
Full_Name: Renaud Lancelot
Version: Version 2.3.0 (2006-04-24)
OS: MS Windows XP Pro SP2
Submission from: (NULL) (82.239.219.108)
I think there is a bug in predict.lme, when a polynomial generated by poly() is
used as an explanatory variable, and a new data.frame is used for predictions. I
guess this is related to * not * using, for predictions, the coefs used in
constructing the orthogonal
2011 Dec 23
2
2.1.rc1 (056934abd2ef): virtual plugin mailbox search pattern
Hello Timo,
With dovecot 2.1.rc1 (056934abd2ef) there seems to be something wrong
with virtual plugin mailbox search patterns.
I'm using a virtual mailbox 'unread' with the following dovecot-virtual file
$ cat dovecot-virtual
*
unseen
For testing propose I created the following folders with each containing
one unread message
INBOX, INBOX/level1 and INBOX/level1/level2
2011 Jan 19
3
lme-post hoc
Hi all,
I analysed my data with lme and after that I spent a lot of time for
mean separation of treatments (post hoc). But still I couldn’t make
through it. This is my data set and R scripts I tried.
replication fertilizer variety plot height
1 level1 var1 1504 52
1 level1 var3 1506 59
1 level1 var4 1509 54
1 level1 var2 1510 48
2 level1 var1 2604 47
2 level1 var4 2606 51
2 level1 var3
2014 Oct 24
3
[LLVMdev] Adding masked vector load and store intrinsics
> How would one express such semantics in LLVM IR with this intrinsic? By definition, %data anmd %passthrough are different IR virtual registers and there are no copy instructions in LLVM IR.
You never need to express this semantic in LLVM IR, because in SSA form they are always different SSA defs for the result of the operation versus the inputs to the operation. Someplace late in the CG
2011 Dec 14
1
termplot & predict.lm. some details about calculating predicted values with "other variables set at the mean"
I'm making some functions to illustrate regressions and I have been
staring at termplot and predict.lm and residuals.lm to see how this is
done. I've wondered who wrote predict.lm originally, because I think
it is very clever.
I got interested because termplot doesn't work with interactive models:
> m1 <- lm(y ~ x1*x2)
> termplot(m1)
Error in `[.data.frame`(mf, , i) :
1999 Apr 16
1
NextMethod
>> One clear moral seems to be don't do anything more inside a
>> generic function than you really need to do. Keep it *very*
>> simple indeed.
>>
> I recall JMC saying something like, all generic functions
> should be one line long; a call to the appropriate UseMethod.
It certainly is encouraging to know that others also have been confused by
aspects of
2003 Jun 25
0
frequency table
Robin,
the initial output from apply() is always in the form you have below, but if
it can be 'simplified' into a structure like the matrix, it does so. The
same thing happens with sapply().
If you want to produce a nice matrix as the out put you have to ensure that
the simplification is possible. Here is one way.
> apply(x2, 2, function(x, v) table(factor(x, levels=v)),
2006 Apr 06
1
polynomial predict with lme
Does lme prediction work correctly with poly() terms?
In the following simulated example, the predictions
are wildly off.
Or am I doing something daft?
Milk yield for five cows is measured weekly for 45 weeks.
Yield is simulated as cubic function of weekno + random
cow effect (on intercept) + residual error.
I want to recover an estimate of the fixed curve.
###############
library(nlme)
2007 Nov 28
2
Change in smbclient between 3.0.24 and 3.0.25c breaks third party app
Hello list,
A change in smbclient between 3.0.24 and 3.0.25c breaks [1] the gollem
filemanager [2] and maybe others.
In particular folder creation is broken unless the folder is a top level
folder on the share.
To create a subfolder "level2" in the folder /level1 of a share gollem
executes this command:
/usr/bin/smbclient "//1.2.3.4/sharename" "-p139"
2005 Jun 14
0
c(recursive=TRUE)
Hi R users,
I am currently using c(...,recursive=TRUE) to handle list-structured
objects.
This allows to represent something like:
> l1 = list(level1=1,level2=list(sub1=1,sub2=2))
as:
> (l1names = names(c(l1,recursive=TRUE)))
[1] "level1" "level2.sub1" "level2.sub2"
Then, one can use:
> (l1names = sapply(l1names,FUN=function(element)
2009 Jul 13
0
problem predict/poly
Dear R experts,
I am observing undesired behavior of predict(fit, newdata), in case when fit object is produced by lm() involving a poly(). Here is how to reproduce:
x <- c(1:10)
y <- sin(c(1:10))
fit <- lm(formula=y~poly(x, 5, raw=TRUE))
predict(fit, newdata=data.frame(x=c(1:10))) ## this works
predict(fit, newdata=data.frame(x=c(1:1))) ## this is broken, error below
Error in poly(x,
2007 Jun 04
1
Standard errors of the predicted values from a lme (or lmer)
Dear Dieter,
sorry for not being more specific. I would like to use R to get a prediction
(with standard error) of the response in a mixed model at selected values of
the fixed-effects factors. Hence, in a mixed model, say, for response body
size with, say, fixed factors sex and age, I would like to get a prediction
of size for each sex and at selected ages such as 5, 10, 15; and I want a SE