Displaying 20 results from an estimated 1000 matches similar to: "type III sum of squares - ssType"
2004 Jan 15
2
Multiple comparisons in R; multicomp
Is there a fonction for multiple comparison tests (similar to "multicomp" in Splus) in a package of R?
Thanks in advance for any hint...
Cheers,
Patrick Giraudoux
University of Franche-Comté
Department of Environmental Biology
EA3184 af. INRA
F-25030 Besançon Cedex
tel.: +33 381 665 745
fax.: +33 381 665 797
http://lbe.univ-fcomte.fr
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2003 Dec 16
2
Winedit and R
Hi all,
I am trying to install add-on in R (rw1070) to work with WinEdit. Libraries Swinregistry and Rwinedt have been installed via "Install Package(s) from local zip files" from R. However, when I run library(Rwinedt) I get the following messages:
> library(Rwinedt)
Loading required package: SWinRegistry
Error in loadNamespace(name) : package `methods' does not have a name
2004 Jan 02
1
bwplot and panel.bwplot
Hello,
I am trying to use "bwplot" to display whisker boxes according to some conditioning factors ("age" has two values 1/2). I get the following messages:
> library(trellis)
> bwplot(dvk95~age|site*season,panel=function(x,y){panel.bwplot(x,y)})
Error in tapply(1:0, structure(list(INDICES = numeric(0)), .Names = "INDICES"), :
arguments must have
2006 Jan 07
1
maptools, write.polylistShape
Dear Roger,
I am trying to use the write.polylistShape() function of maptools for
the first time and realize that it handles list of polygons of class
'polylist'. However, it seems that no as.polylist() function exist in
the package. The question behind that is: in your opinion, which would
be the best way to convert a list of matrix of polygon nodes
coordinates into an object of
2004 Jul 18
2
bootstrap and nls
Hi,
I am trying to bootstrap the difference between each parameters among two non linear regression (distributed loss model) as
following:
# data.frame
> Raies[1:10,]
Tps SolA Solb
1 0 32.97 35.92
2 0 32.01 31.35
3 1 21.73 22.03
4 1 23.73 18.53
5 2 19.68 18.28
6 2 18.56 16.79
7 3 18.79 15.61
8 3 17.60 13.43
9 4 14.83 12.76
10 4 17.33 14.91
etc...
# non
2005 Apr 23
1
RCMD check error windows
Dear Lister,
I am working with Windows XP and R 2.1.0 and can check and build
home-made packages easily (just *.r, *.rmd, *.rda files, no compiled
code). However for some reasons, I cannot check or build the package
'foreign' from the source (I took it as an exercise...). After some
lines of sentences OK (here omitted and replaced by ...), I get a
message like this:
RCMD check
2006 Jan 05
1
Memory limitation in GeoR - Windows or R?
Dear Aaron,
I am really a tool user and not a tool maker (actually an ecologist
doing some biostatistics)... so, I take the liberty of sending a copy of
this e-mail to the r-help list where capable computer persons and true
statisticians may provide more relevant information and also to Paulo
Ribeiro and Peter Diggle, the authors of geoR..
I really feel that your huge matrix cannot be
2012 Oct 31
0
pseudo R-squared for model generated with spgm (splm)
I am working with the splm package. I use the spgm function: general
estimation of a panel data model. Based on this approach, I know it is
possible to compute a R2, eg the ratio of variation explained by a given
model.
My model is :
bivmod<-spgm(logIKA~NBLITRE0+NBLITRE1,data=mydatap,listw=comsKnn.nbW,spatial.error=TRUE)
I know that we can calculate the R^2 as the variance of the fitted
2012 Nov 07
2
pseudo R-squared with likfit (geoR)
We want to compute a pseudo R-squared for a model whose parameter
estimation was based on maximum likelihood (function likfit, package geoR).
I tried to compute the R2 proposed by Maddala (1983) which compare the
maximized likelihood for the model without any predictor and the
maximized likelihood for the model with all predictors.
I got a really low value (0,01%). Did I miss something? Are
2004 Mar 12
0
Basic questions on nls and bootstrap
Dear R community,
I have currently some problems with non linear regression analysis in R.
My data correspond to the degradation kinetic of a pollutant in two
different soil A and B, x data are time in day and y data are pollutant
concentration in soil.
In a first time, I want to fit the data for the soil A by using the Ct =
C0*exp(-k*Tpst) with Ct the concentration of pollutant at time t, C0
2004 Apr 09
1
bootstrap function coefficients
Dear R community,
Please, can you help me with a problem concerning bootstrap. The data table
called «RMika», contained times (Tps) and corresponding concentration of a
chemical in a soil (SolA). I would like to get, by bootstraping, 10
estimations of the parameters C0 and k from the function: SolA =
C0*exp(-k*Tps).
# First, I fit the data and all is OK
>
2000 May 09
1
Type III Sums of Squares?
Hello,
I'd like to propose an extension to the function summary.aov.
In Splus (2000, I don't know about other versions), summary.aov allows a
parameter ssType to be set to 1 or 3 (defaults to 1) to choose the type of
Sums of Squares.
I know I can get Type III SS in R with drop1(model), but including the
functionality into summary.aov would, in my opinion,
- yield a more usable table
2005 Nov 20
1
use of the 'by' command & converting SPSS ANOVA/GLM syntax into R syntax
I have two questions I would appreciate assistance with:
(1) I believe "by" is the command used to split a file. In the following
example, "mydat" is the dataframe , "group" the variable I want to split
the analysis by & "WK1FREQ,WK2FREQ" the variables
attach(mydat)
by (GROUP)
cor.test (WK1FREQ,WK2FREQ)
I have also tried: (by (GROUP) cor.test
2004 Feb 26
1
writing polygons/segments to shapefiles (.shp) or other A rcGIS compatible file
The main limitation of the shapefiles package that I put together is that it
does not create shapefiles from R objects - rather it only writes shapefiles
that have been read into R and manipulated within the constraints of the
existing file structure. By this I mean that for example you can change the
coordinates of points and write them back out. Or you can add a bunch of
blank columns in the
2011 Nov 26
4
SPSS -> R
I'm an SPSS user trying to make the transition to R.
Can someone help me translate the following SPSS code into R?:
GLM Total_tp1 Total_tp2 WITH Age Sex
/WSFACTOR=Time 2 Repeated
/METHOD=SSTYPE(3)
/CRITERIA=ALPHA(.05)
/WSDESIGN= Time
/DESIGN= Age Sex Age*Sex.
Also. can anyone recommend any resources to help SPSS users learn to things in R?
Thanks,
-kristi
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2007 Nov 04
4
Why can repeated measures anova with within & between subjects design not be done if group sizes are unbalanced?
Dear R people:
I wish to switch from SPSS to R, but there is one particular type of
ANOVA design that cannot be done in R. Or more likely, it can be
done, but it is nowhere documented.
The problem is typical for psychologists:
You have a repeated measures design with different groups of subjects.
Now, this can be done with the aov command, but the number of
subjects in both groups must be
2005 Jul 30
1
partial SS for anova
Hello,
I use lme4 package.
library(lme4)
fit=lmer(y ~ time+dye+trt+trt:time + (1|rep), data=dataset, na.action='na.omit')
anova(fit)
The anova gives sequential F-tests and sequential SS.
My question is: how I can get partial F-tests and partial SS?
For lm (not lmer)
anova(lm(y~x+z))
we can use
anova(fit, ssType=3)
but it is not work for lmer.
Natalia.
2012 Mar 05
1
Random and fixed effect in linear model
Hello everybody,
This is my firth question in this mailing list. The question is about the
how to deal with a model with both random and fixed factors. I know to do
the analysis using SPSS. The command line wit be as follows:
UNIANOVA alpha.ug.mg BY Line Year Rep
/RANDOM=Year Rep
/METHOD=SSTYPE(4)
/INTERCEPT=EXCLUDE
/PRINT=HOMOGENEITY
/CRITERIA=ALPHA(0.05)
/DESIGN= Year Rep*Year Line
2012 Oct 18
1
legend of maps generated by function symbols
I generated maps with the function symbols (graphics). These are basic
maps generated with :
symbols(x,y,circles=myvariable)
where x et y are spatial coordinates corresponding to replicates of
"myvariable".
I would associate legend to this kind of maps, is it possible?
Regards,
Marion.
--
Marion Jacquot
Laboratoire de Chrono-environnement
UMR UFC/CNRS 6249 USC INRA
Universit? de
2004 Feb 25
2
writing polygons/segments to shapefiles (.shp) or other ArCGIS compatible file
I am not sure a previous e-mail reached the list (no mail aknowledgement from R-boundle etc.). The question was how to write polygon
or segment coordinates into a shapefile set or any other ArcGIS supported format. The library shapefiles seems to do something but
the documentation is a bit beyond of my mind.... and I cannot get the meaning of the functions write**** and its application to the
case