Displaying 20 results from an estimated 1000 matches similar to: "package:AlgDesign and .Random.seed"
2007 Apr 25
1
Help on 'find.BIB' function
Hello everyone,
I am trying to use the 'find.BIB' function to construct a balanced incomplete block design. When I ran the example given in the help file (find.BIB(10,30,4)), I obtained the following error message:
Error in optBlock(~., withinData = factor(1:trt), blocksize = rep(k, b)) :
object ".Random.seed" not found
I investigated what the optBlock
2011 Nov 24
1
AlgDesign - $D $A $Ge $Dea
Hi,
I am wondering how I should interpreate the output of optFederov() in AlgDesign.
Specially I want to know what is $D, $A, $Ge and $Dea, which one I can use as an efficiency to say how good the optimal design is.
I only know when a orthogonal design comes, $D = 1.
I red the pdf document -- vignette("AlgDesign")
[Just type: vignette("AlgDesign") in R, you will get
2009 Sep 28
1
model.matrix troubles with AlgDesign
Dear DevelopeRs,
in continuing with my suite of packages on experimental design, I am stuck
with an issue that appears to be related to package AlgDesign - I have tried
to get it solved by Bob Wheeler, but he seems to be stuck as well.
Whenever AlgDesign is loaded, some of my code does not work any more. For
example, in a fresh R session:
require(DoE.base)
fac.design(nlevels=c(2,6,2))
2007 Oct 09
2
AlgDesign--exact and approximate design
Hi
I am trying to generate a design using Algdesign and came across terms of
"exact design" and "approxiamte theory design", I did not find a reference
to explain what they are, could some one shed some light about this on me?
Another question is, I want to measure the main effects and at least two
interactions, variables are factors, how do I ensure this in formula,
2008 Apr 21
3
optFederov/AlgDesign - help avail?
Hello, we are needing to generate optimal (Fractional) designs for
discrete choice applications, where we will be using logistic regression
or multinomial logit as the modeling technique.
It looks like optFederov, in the AlgDesign package may work, but not
sure if this algorithm works when the variable of interest is binary or
nominal?
Anyone who are experts in this area, anyone interested
2007 Oct 10
2
how to generate and evaluate a design using Algdesign
Hi,
I have some problems when using AlgDesign->optFederov() generating
designs.
I have 6 variables, all factors. 3^2 and 4^4, I want to have a design that
can take care of main effects and two interactions within 2 pair of
variables v3-v4 and v5-v6, the following is the code
################
require(AlgDesign)
set.seed(1)
levels = c(v1=3,v2=3, v3=4,v4=4,v5=4,v6=4)
2004 Oct 09
2
inst directory
R CMD check on a Windows system, halts with the following;
installing inst files
FIND: Parameter format not correct
make[2]: *** [C:/AlgDesign/AlgDesign.Rcheck/AlgDesign/inst]Error 2
make[1] *** [all] Error 2
make: *** [pkg-AlgDesign] Error2
*** Installation of AlgDesign failed ****
The inst directory contains the sub directory doc with a pdf and dvi
file. Any sub directory in inst seems to
2007 Aug 28
2
Experimental Design with R
Dear R-users,
I want to know if there is a package that allows to define different experimental designs (factorial, orthogonal, taguchi)
and to compare them.
I don't found one in the R-web site, but it is possible I missed it!
Thank you in advance
Sincerely,
Marc
2009 Nov 18
1
Link to pdf documentation from other package ?
Dear developeRs,
I have not found anything recent about how to link to a vignette or other
documentation from within Rd-files. Is this now possible with the new help
system ? For example, I would like to link to the file AlgDesign.pdf
provided within the doc directory of package AlgDesign.
Thanks for any suggestions,
regards, Ulrike
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2004 Feb 04
0
AlgDesign
AlgDesign is a new package for calculating algorithmic experimental
designs. It will calculate both exact and approximate designs for a
variety of criteria. It will handle very large designs. It will also
block designs in a variety of ways, including split plotting. You should
find it at least as capable as other software for this purpose.
I'd normally submit this sort of thing to beta test,
2004 Feb 04
0
AlgDesign
AlgDesign is a new package for calculating algorithmic experimental
designs. It will calculate both exact and approximate designs for a
variety of criteria. It will handle very large designs. It will also
block designs in a variety of ways, including split plotting. You should
find it at least as capable as other software for this purpose.
I'd normally submit this sort of thing to beta test,
2009 May 12
1
Can anyone suggest some r packages for Experimental Designs, specifically for choice and conjoint??? (or is intersted in helping me make 1)
Afternoon everyone,
I''ve spent the last week or so looking at all the experimental design
packages I can find in R. AlgDesign, design.conf and BHH2 being the best one
I could find.
Unfortunately none of these do a particularly good job for complex designs,
in particular for conjoint or discrete choice. (or perhaps they do, and I
can''t make them work correctly)
2011 Feb 28
0
lme error message: Error in getGroups.data.frame(dataMix, groups) :
Windows XP
R 2.10
I am trying to run lme and get the following error:
> fitRandom <- lme(values ~ subject,
+ data=withindata)
Error in getGroups.data.frame(dataMix, groups) :
Invalid formula for groups
my data follows, below which is a copy of all my code
>
> print(withindata)
subject values
1 1 2.3199639
2 1 -8.5795802
3 1 -4.1901241
4
2005 Apr 22
3
Error when downloading and installing ALL R packages
Hi,
after updating to 2.1 (see below) I am no longer able to install all
R packages as mentioned at
<http://support.stat.ucla.edu/view.php?supportid=30>.
After finishing the download, I received the following error:
[...]
trying URL
'http://www.stats.ox.ac.uk/pub/RWin/bin/windows/contrib/2.1/xgobi_1.2-
13.zip'
Content type 'application/zip' length 102623 bytes
opened
2007 Aug 09
0
AlgDesign expand.formula()
Can anyone explain why AlgDesign's expand.formula help and output differ?
#From help:
# quad(A,B,C) makes ~(A+B+C)^2+I(A^2)+I(B^2)+I(C^2)
expand.formula(~quad(A+B+C))
#actually gives ~(A + B + C)^2 + I(A + B + C^2)
They don't _look_ the same...
Steve E
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2009 May 25
1
Blocking design
Hi,
Does anyone know how to generate block designs using the AlgDesign
package? I have a experimental design with 1024 combinations and need to
reduce it.
Thanks!
Edson
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2006 Mar 05
1
optimal factorial designs
Hi All,
recently I used Design Expert for some Design Of Experiment work.
I was happy with the interface to select which effects I want to see in my experiment, and which not.
For example: I can select of course my main effects, but also if I want to see interaction A:B, B:C, A:B:C,but not A:C.
This was very interessting as you can end up with fewer runs, especially in cases of 10 factors with
2009 Sep 04
1
DOE in R?
Hello!
This is not a topic I am well versed in but required to become well versed
in...I welcome any assistance!
Using R, I want to create an optimal design for an experiment. I'll be
analyzing the results with logistic regression or some generalized linear
model. I am thinking that the algdesign package can help (but no idea where
to start?).
I'm presenting an example here that I have
2007 Apr 30
1
mirror's choice when installing a package for R-2.5.0 (PR#9643)
Hello,
Just a quick message to say that,
------------------------------------------------------------------------
-------
when choosing (with or without the tcltk window) "Bern 1 (swiss)" as
CRAN mirror to install
a package (function install.packages) for R-2.5.0, the list of
available packages
for osx seems not complete:
AMORE, AdaptFit, AlgDesign, AnalyzeFMRI, SemiPar,
2009 Apr 08
2
Doubt about aov and lm function... bug?
Hi,
The below very strange:
# a) aov function
av <- aov(Sepal.Length ~ Species, data=iris)
# Error in parse(text = x) :
# unexpected symbol in "Sepal(Sepal.Length+Species)Length"
av <- aov(iris[, 1] ~ iris[, 5])
# summary(av)
# Df Sum Sq Mean Sq F value Pr(>F)
# iris[, 5] 2 63.2 31.6 119 <2e-16 ***
# Residuals 147 39.0 0.3
# ---