Displaying 20 results from an estimated 1200 matches similar to: "split-plot design?"
2006 Nov 05
1
diag()<- in Matrix?
Dear all,
I am trying to use the Matrix package to do some calculations on rather
large and sparse matrices. An example of such a matrix is given below.
mig<-0.2
side<-10
np<-side^2
mig.mat<-matrix(0,np,np)
diag(mig.mat[1:(np-side),(side+1):np])<-mig/4
diag(mig.mat[(side+1):np,1:(np-side)])<-mig/4
diag(mig.mat[-np,-1])<-mig/4
2003 Jan 22
2
small bug in binom.test?
Hi all,
I am wondering whether there is a small bug in the binom.test function of
the ctest library (I'm using R 1.6.0 on windows 2000, but Splus 2000 seems
to have the same behaviour). Or perhaps I've misunderstood something.
the command binom.test(11,100,p=0.1) and binom.test(9,100,p=0.1) give
different p-values (see below). As 9 and 11 are equidistant from 10, the
mean of the
2011 Jun 27
1
import text-records and set the fields in a table
hi!
I apologize in advance if this is a newbie dumm question, but I really can't
figure it ou.
I have lists of sumeric and character data on some URLs, which look like
this:
<photo id="5876248819" owner="13716719 at N04" secret="faf9bb7f52"
server="5264" farm="6" title="our rose garden" ispublic="1"
2009 Jul 15
2
Differing Variable Length Inconsistencies in Random Effects/Regression Models
Dear All,
I am quite new to R and am having a problem trying to run a linear model
with random effects/ a regression- with particular regard to my variable
lengths being different and the models refusing to compute any further.
The codes I have been using are as follows:
vc<-read.table("P:\\R\\Testvcomp10.txt",header=T)
>> attach(vc)
>
> family<-factor(family)
>
2005 Oct 10
1
interpretation output glmmPQL
Hi !
We study the effect of several variables on fruit set for 44 individuals
(plants). For each individual, we have the number of fruits, the number
of flowers and a value for each variable.
Here is our first model in R :
y <- cbind(indnbfruits,indnbflowers);
model1
<-glm(y~red*yellow+I(red^2)+I(yellow^2)+densite8+I(densite8^2)+freq8_4+I
(freq8_4^2), quasibinomial);
- We have
2002 May 03
1
R-squared in lm
Dear all,
I'm puzzled by the definition of r-squared used by 'lm' when the model is
without intercept.
The help for summary says:
>r.squared: R^2, the ``fraction of variance explained by the model'',
>
> R^2 = 1 - Sum(R[i]^2) / Sum((y[i]- y*)^2),
>
> where y* is the mean of y[i] if there is an intercept and
> zero
2005 Jun 17
1
Mixed model question
Hi,
I am new to this list as a poster, but a reader for some time.
I've using R for several weeks now, and I have a lot of questions about
certain procedures. Here I go:
I want to test if there are differences in the time spent by pollinators
visiting flowers of a given plant species, according to a number of
experimental manipulations made on those flowers. All experimental
2004 Dec 09
2
Peak finding algorithm
I'm sure there must be various peak-finding algorithms out there. Not
knowing of any, I have written one myself*, but I thought I'd ask to
see what's out there.
Basically, I have a 2-dimensional data set and I want to identify local
peaks in the data, while ignoring "trivial" peaks. My naive algorithm
first identifies every peak and valley (point of inflection change
2001 Apr 05
1
PR#896
Sorry to all that are angry about the form of my previous mail. I
didn't realise what would happen :((.
Here it is in (hopefully) plain text (if my mailer doesn't spoil it again):
##############
Dear developers,
I have a problem with some discrepancy between R 1.2.1 for
Windows and R 1.2.2 (and less) for Linux. While trying to correct
the wilcox.test (see my previous bug report) I
2004 Dec 02
16
How about a mascot for R?
R users,
How come R doesn't have a mascot? Linux has one and so does LaTeX, so shouldn't R? I personally think that associating a "friendly face" with R would be a good thing for R (one letter names can be quite intimidating).
I apologize if this is addressed in the FAQ. I searched the FAQ as well as the mailing list archives and checked
?mascot
but to no avail. ;-)
2009 Aug 31
2
interactions and stall or memory shortage
Hello,
After putting together interaction code that worked for a single pair of
interactions, when I try to evaluate two pairs of interactions(
flowers*gopher, flowers*rockiness) my computer runs out of memory, and the
larger desktop I use just doesn't go anywhere after about 20 minutes.
Is it really that big a calculation?
to start:
mle2(minuslogl = Lily_sum$seedlings ~ dnbinom(mu = a,
2008 Feb 13
1
model construction
I buy flowers at a local market on a fairly regular basis. The flower
vendors post their prices and if I want to buy only one or two flowers I
will generally get the posted price. From time to time I want to buy large
quantities of flowers, and sometimes a vendor will give me a better price
than their posted price for the bulk order, but more often I have to offer
them a higher price than the
2004 Jan 09
3
ipred and lda
Dear all,
can anybody help me with the program below? The function predict.lda
seems to be defined but cannot be used by errortest.
The R version is 1.7.1
Thanks in advance,
Stefan
----------------
library("MASS");
library("ipred");
data(iris3);
tr <- sample(1:50, 25);
train <- rbind(iris3[tr,,1], iris3[tr,,2], iris3[tr,,3]);
test <- rbind(iris3[-tr,,1],
2007 Nov 28
4
spf record
Your spf record is broken:
dovecot.org. 39942 IN TXT "v=spf1 a -all"
--
Jim Flowers <jflowers at ezo.net>
--
This message has been scanned for viruses and
dangerous content by MailScanner, and is
believed to be clean.
2004 Feb 05
1
Multilevel in R
Hello,
I have difficulties to deal with multilevel model. My dataset is composed
of 10910 observations, 1237 plants nested within 17 stations. The data set is not
balanced. Response variable is binary and repeated.
I tried to fit this model
model<- glmmPQL( y ~ z1.lon*lun + z2.lat*lun + z1.lon*lar + z2.lat*lar + z1.lon*sca + z2.lat*sca +z1.lon*eta + z2.lat*eta,
random = ~ lun + lar + sca
2006 May 22
4
use join table in paginate
How come I allways immediately run into difficult stuff when I''m trying
some new programming language? Am I blind for the simplicity of
Ruby/Rail, which a see must be there? Anyway, don''t try and answer this
rhetoric question. I have got another one for you, seemingly difficult.
I''m struggling with a n:m relationship (in a database, that is) and its
join table.
2002 Jan 06
4
File Info Question
When I run ogginfo on a .ogg file I created with oggenc (RC3), it lists some
things that I have questions about:
1. Ogginfo lists bitrate_average and bitrate_nominal. Now, bitrate_average
(I assume) would mean the overall bitrate average for the entire file but
what does bitrate_nominal mean?
2. How is the serial number created? Can I tell something specific about an
.ogg file by looking at it?
2005 Oct 13
4
[LLVMdev] Next LLVM release thoughts?
On Thu, 13 Oct 2005, Misha Brukman wrote:
>> How does this tentative plan sound: we have two more weeks of
>> development, then start the release processing part on about Oct 31
>> (spooky!).
>
> In that case, it needs a cool "release name". :)
Suggestions welcome!
-Chris
--
http://nondot.org/sabre/
http://llvm.org/
2005 Oct 13
0
[LLVMdev] Next LLVM release thoughts?
>> In that case, it needs a cool "release name". :)
>
> Suggestions welcome!
Names of flowers are numerous but not exactly cool. I do not think any other
software project has used flower names.
Aaron
2011 Feb 10
0
stochastic growth models
Hello,
It's not easy to express clearly what I have in mind by stochastic growth models. I've
been working with a couple of titles -Stochastic Models in
Biology, for one, but both date back a decade or more.
I'll try to illustrate the model a little more.
A reasonably comparable situation is Bolker's analysis of
how many flowers are created on a given plant among a patch
of