Displaying 20 results from an estimated 1100 matches similar to: "back transformation from avas"
2004 Nov 29
2
problem with using transace
>I am trying to use the Hmisc function transace to transform predictors
>
> test<-cbind(flowstress,pressres,alloy)
> xtrans<-transace(x,binary=pressres',monotonic='flowstress', categorical='alloy')
>
>
>and I am getting the following message??
>Error in ace(x[, -i], x[, i], monotone = im, categorical = ic) :
> unused argument(s) (monotone ...)
2004 Jul 15
1
areg.boot use of inverseTrans and ytype
Hi R helpers!
I'm still a bit ( alot) confused by the use of "inverseTrans" and "ytype" in areg.boot (Hmisc): What I want to do seems very simple, but I do not get the result I want:
plot the predicted values in the original scale. (I did not understand the documentation, sorry!)
for instance the following code
2004 Jan 20
2
avas and ace
Hi,
Does any one know how we can decide on the correct transformation in (avas and ace) after having drawn the graphs y,g(y) x ,s(x) and g(y) ,s(x) . Is it possible by only looking at patterns the graphs follow for example when
y ,g(y) shows a logaritmic pattern can we say that log transform on y is suitable?
Thanks for your help.
Regards
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2011 Oct 28
1
ACE/AVAS with bootstrap
I am using ACE/AVAS to fit a non-parametric regression model to a multivariate data set. Is there a way to add confidence intervals to the fit and predictions by using bootstrap? Thanks for any suggestions.
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2006 Feb 16
1
segmentation fault with Hmisc areg.boot(): Now acepack avas failure
Hi Folks,
Mac OS 10.4.4
R 2.2.1(2005-12-20 r36812)
Hmisc 3.0-10
acepack 1.3-2.2
I had R crashes while running areg.boot in Hmisc (see old message
below), but now I realize that the problem appears to be in the avas
function in acepack. I tried running running the avas example (in
acepack package), and got an immediate crash.
Any thoughts? The Apple crash report (from R GUI crash) follows.
2004 Jan 20
2
avas
Hi,
I wanted to make a transformation with "avas" and "ace" but saw a message " couldn't find function "avas" "
what are the possibble reasons of this case?
It may be a basic question but unfortunately I am very new in R.
Thanks for your helps
Regards
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2006 Feb 16
1
segmentation fault with Hmisc areg.boot()
Hi Folks,
Mac OS 10.4.4
R 2.2.1(2005-12-20 r36812)
Hmisc 3.0-10
acepack 1.3-2.2
I keep getting a "segmentation fault" when trying to run areg.boot in
the Hmisc package. I include below output from two different attempts.
Thank you in advance for any help.
Hank Stevens
The following is taken from the example in the areg.boot
documentation, run inside Aquamacs Emacs:
>
2004 Jul 13
5
table lookup n R
Hello R helpers!
I looked but did not find a table-lookup R-utility. I could use a loop to do the job (old FORTRAN/C habits die hard) but if I have a big table in which I have to search for the values corresponding to a vector, I end up logically with a double loop.
Is there already such a utility? Otherwise, is there a way without loops?
Thanks as always
Anne
2000 Mar 27
1
R port of acepack
To whom should bug reports of the R port of acepack be directed?
On a SPARC/Solaris 2.6 or 2.7 (SunOS 5.6 or 5.7) system running
R-1.0.0 the avas example fails
> library(acepack)
> example(avas)
avas> TWOPI <- 8 * atan(1)
avas> x <- runif(200, 0, TWOPI)
avas> y <- exp(sin(x) + rnorm(200)/2)
avas> a <- avas(x, y)
Process R bus error (core dumped) at Mon
2004 Dec 22
2
RE ordering levels
Sorry, sorry....
of course
levels(testf)[c(2,1,3)]
will do the job
My excuses to all
Anne
PS I will meditate the following saying
"la parole est d'argent et le silence est d'or"
BONNES FETES A TOUS
SEASONAL GREETINGS
----------------------------------------------------
Anne Piotet
Tel: +41 79 359 83 32 (mobile)
Email: anne.piotet@m-td.com
2003 Sep 12
3
factor creation
Another newbie question....
I want to create a factor (say cT)from a numerical variable (sy temp) by
regrouping the values in classes (say cT <390, [390,400[,[400,409[...>=550)
Is there a simple way of doing that using the factor function?
AND I do not find how to manipulate strings (I want to concatenete characters
strings ("abkdas","chjw") into something like
2005 Jan 06
2
library vcd for R rw2001
Is there an upgrate of the vcd library (visualisation of categorical data) for the latest R version?
Trying to download it from CRAN I get
URL /data/WWW/ftp/pub/R/bin/windows/contrib/r-release/vcd_0.1-3.4.zip was not found on this server.
googling it, I found it for instance on
http://www.sourcekeg.co.uk/cran/bin/windows/contrib/1.9/
but trying to install it gave me the message
>
2005 Jan 07
2
help with polytomous logistic regression
Hi!
I'm trying to do some ploytomous logistic regression using multinom() in the nnet package, but am a bit confused about interpretation of the results
Is it possible to get the following quantities:
I: maximum likelihood estimates to test for fit of model and significance of each predictor
(I would like to produce a table of the following type)
Analysis of Variance: MLE (values are
2005 Jan 04
1
scree plot
Hi!
Is there an easy way to add to the scree-plot labels to each value pertaining to the cumulative proportion of explained variance?
Thanks and a happy new year
Anne
----------------------------------------------------
Anne Piotet
Tel: +41 79 359 83 32 (mobile)
Email: anne.piotet@m-td.com
---------------------------------------------------
M-TD Modelling and Technology Development
PSE-C
2004 Dec 06
3
removing NA as a level
Dear R-helpers,
I have a problem which I suppose is trivila, but...
I have included NA values as factors ( (to be able to make nice printed summaries with NAs % ba category ) with the following code
dat$x.f<-factor(dat$x, exclude=NULL); levels(dat$x.f)<-c("A1","A2","A3","A4","NA"); length(dat$x.f)
Now, I want to impute the missing values.
2003 Aug 31
1
Problem installing acepack in debian
In
platform i386-pc-linux-gnu
arch i386
os linux-gnu
system i386, linux-gnu
status
major 1
minor 7.1
year 2003
month 06
day 16
language R
using debian testing (latest Knoppix) I get an error when installing acepack:
gcc
2004 Nov 15
2
Problems installing packages on MacOS with R 2.00
Dear all,
I have a problem installing a package required by Hmisc on MacOS 10.3.5
with R 2.00.
g77 -fno-common -g -O2 -c avas.f -o avas.o
g77 -fno-common -g -O2 -c rlsmo.f -o rlsmo.o
gcc -bundle -flat_namespace -undefined suppress -L/usr/local/lib -o
acepack.so ace.o avas.o rlsmo.o -L/usr/local/lib
-L/usr/local/lib/gcc/powerpc-apple-darwin6.8/3.4.2
2002 May 22
4
fitting non linear data
Hye every one,
My question will certainly seem stupid as I am quite a beginner in R.
I would like to trace a curve which fits these two vectors:
x<-c( 2,3,4,5,6,7,8,10 )
y<-c( 20, 12, 8, 6, 5, 4.5, 4, 3.8)
It seems to follow a non linear model.
Could anyone help me because I could'nt find the answer I am looking for
in the FAQs.
In advance thank you for your time.
G. Lefebvre
2002 May 12
1
ACE and AVAS
Hello,
I would like to perform a monotone transformation of y (my response
variable) to achieve additivity.
My model is as follows
y~X+items
I do not want to transform X or items (both of these variables are factors)
> X
[1] 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 3 3 3 3 3 3 3 3 3 4 4 4 4 4 4 4 4 4
5 5 5 5 5 5 5 5 5 6 6 6 6 6 6 6 6 6 7 7 7 7 7 7
[61] 7 7 7 8 8 8 8 8 8 8 8 8
Levels: 1 2 3 4 5
2005 Aug 09
2
connexion problem getHdata (HMisc)
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Hi
Just installing R and some