Displaying 20 results from an estimated 300 matches similar to: "nested anova not giving expected results"
2006 Nov 03
5
ANOVA in Randomized-complete blocks design
Dear all,
I am trying to repeat an example from Sokal and Rohlfs "Biometry" --
Box 11.4, example of a randomized-complete-blocks experiment.
The data is fairly simple:
series genotype weight
1 pp 0.958
1 pb 0.985
1 bb 0.925
2 pp 0.971
2 pb 1.051
2 bb 0.952
3 pp 0.927
3 pb 0.891
3 bb 0.892
4
2014 Nov 04
1
[R] Calculation of cross-correlation in ccf
Dear All,
I am studying some process measurement time series in R and trying to identify time delays using cross-correlation function ccf. The results have however been bit confusing. I found a couple of years old message about this issue but unfortunately wasn't able to find it again for a reference.
For example, an obvious time shift is observed between the measurements y1 and y2 when the
2009 Sep 23
1
re peated measures
Hi,
I am performing a repeated measures 2-way ANOVA to assess the influence of
plant and leaf on aphid fecundity. Fecundity is measured for each aphid on a
single leaf.
Here is what I typed.
wingless <- reshape(Wingless,
varying =
2005 Nov 17
1
Mean survival times
Dear list,
I have data on insect survival in different cages; these have the
following structure:
deathtime status id cage S F G L S
1.5 1 1 C1 8 2 1 1 1
1.5 1 2 C1 8 2 1 1 1
11.5 1 3 C1 8 2 1 1 1
11.5 1 4 C1 8 2 1 1 1
There are 81 cages and
2004 Nov 23
2
Convergence problem in GLMM
Dear list members,
In re-running with GLMM() from the lme4 package a generalized-linear mixed
model that I had previously fit with glmmPQL() from MASS, I'm getting a
warning of a convergence failure, even when I set the method argument of
GLMM() to "PQL":
> bang.mod.1 <- glmmPQL(contraception ~ as.factor(children) + cage + urban,
+ random=~as.factor(children) + cage +
2008 Jan 26
2
Error: C stack usage is too close to the limit
Lately R has been behaving strange on my Linux (Ubuntu 7.10) machine,
with occasional segfaults. Today something else and reproducible
happened:
If I type the code below (meant for calibrating data), I get the error
message that "the C stack usage is too close to the limit".
calcurve <- cbind(1:2e4, 1:2e4, 1:2e3); #dummy curve, real one is more complex
caldist <-
2005 Jun 01
2
Different versions, different results ?
Dear all,
I wrote the following batch script on a iMac, and ran it on a linux
mosix cluster.
tu <- read.table("cage.mm5.tags.rna_lib.CAA-CAJ.tu-reshape.table")
tu_reshaped <- t(reshape(tu[1:50,], direction="wide", timevar="tu", idvar=c("rna","lib")))
write.table(tu_reshaped, "cage.mm5.tags.rna_lib.CAA-CAJ.tu-reshaped.table")
2003 Jul 28
3
data manipulation: getting mean value every 5 rows
Dear All,
I would like to ask you how to accomplish a little tricky data
manipulation. I have a large dataset, looking something like:
temp line cage number
18 18 1 6678.63
18 18 1 7774.458
18 18 1 7845.902
18 18 1 9483.578
18 18 1 8983.555
18 18 1 9181.052
18 18 1 9458.696
18 18 1 8138.616
18 18 1 7981.994
18 18 1 7556.491
18 18 1 7672.137
18 18 1 6607.776
18 18 1 8383.65
18 18 1 7129.852
18 18
2007 Nov 22
3
anova planned comparisons/contrasts
Hi,
I'm trying to figure out how anova works in R by translating the
examples in Sokal And Rohlf's (1995 3rd edition) Biometry. I've hit a
snag with planned comparisons, their box 9.4 and section 9.6. It's a
basic anova design:
treatment <- factor(rep(c("control", "glucose", "fructose",
"gluc+fruct",
2003 Sep 23
1
Omitting blank lines with read.table
Say we have a tab delimited file called bug.txt
Part Rep Cage Hb pupae
1 1 S 32
1 M 34
L 42
2 S 36
M 28
L 36
read.delim("bug.txt")
Part Rep Cage Hb.pupae
1 1 1 S 32
2 NA 1 M 34
3 NA NA L 42
4 NA NA NA
5 NA NA NA
6 NA 2 S 36
7 NA NA M 28
8 NA NA L 36
>
2012 Jul 23
1
[PATCH] nsd-patch: fix segfault after renaming slave zone
Hi all,
we have discovered a segfault in nsd-patch when renaming slave zone in nsd
config file if some data for this zone still exists in the IXFR diff
database.
In my case, the zone "black" was renamed to "blackinwhite":
> root at ggd115:/cage/nsd/var/nsd/zones#nsd-patch -c
> /cage/nsd/etc/nsd-dns-slave.conf
> reading database
> reading updates to database
>
2020 Nov 12
1
ssacli start rebuild?
On Nov 11, 2020, at 6:37 PM, Valeri Galtsev <galtsev at kicp.uchicago.edu> wrote:
>
> how do you map failed software RAID drive to physical port of, say, SAS-attached enclosure.
With ZFS, you set a partition label on the whole-drive partition pool member, then mount the pool with something like ?zpool mount -d /dev/disk/by-partlabel?, which then shows the logical disk names in
2009 Feb 23
1
predicting cumulative hazard for coxph using predict
Hi
I am estimating the following coxph function with stratification and frailty?where each person had multiple events.
m<-coxph(Surv(dtime1,status1)~gender+cage+uplf+strata(enum)+frailty(id),xmodel)
?
> head(xmodel)
id enum dtime status gender cage uplf
1 1008666 1 2259.1412037 1 MA 0.000 0
2 1008666 2 36.7495023 1 MA 2259.141 0
3 1008666
2003 May 13
1
assessing the fit of a LME model
Dear All,
I would like to ask a couple of questions on a LME model.
I tested 4 selection lines at 4 food concentrations against a standard
competitor stock. I had 3 replicate cages per selection line. In each cage
I have 10 vials. I counted the number of wild type flies and competitor
stock emerging in each vial. My main question is: is there any difference
between selection lines?
I did fit
2011 Apr 26
2
grid stringHeight
Dear all,
I'm puzzled by the behavior of stringHeight in the grid package.
Consider the following test,
library(grid)
test <- function(lab="dog", ...){
g1 <- textGrob(lab)
g2 <- rectGrob(height=grobHeight(g1), width=grobWidth(g1))
gg <- gTree(children=gList(g1,g2), ...)
print(c("height:", convertUnit(stringHeight(lab), "mm",
2012 Feb 24
2
Video corruption bug in stellarium
Just installed stellarium-0.10.2-1.el6.rf(i686) last night with the
Add/Remove Software tool. I'm getting video corruption and this message
in the terminal:
StelAppGraphicsScene: drawBackground needs a QGLWidget to be set as
viewport on the graphics view
A bit of Google work turned up this on the Ubuntu forum:
"The new version of Stellarium 0.10.3 resolves my display problems.
2010 Mar 21
3
Looking for experiences with filesystem choices....
Lots of opinions out there and I have read and read, so I have a home server
that I have finally setup with a hot swap hdd cage and what I am planning on
doing is copying my data drive every other day and rotating them offsite,
haven't figured out how often though. So I did my first test last night and
the backup drive was formatted with ext3 but looking to try to speed things
up and was
2002 Mar 26
3
ks.test - continuous vs discrete
I frequently want to test for differences between animal size frequency
distributions. The obvious test (I think) to use is the Kolmogorov-Smirnov
two sample test (provided in R as the function ks.test in package ctest).
The KS test is for continuous variables and this obviously includes length,
weight etc. However, limitations in measuring (e.g length to the nearest
cm/mm, weight to the nearest
2009 May 22
1
Forcing a variableinto a model using stepAIC
Dear All,
I am attempting to use forward and/or backward selection to determine
the best model for the variables I have. Unfortunately, because I am
dealing with patients and every patient is receiving treatment I need
to force the variable for treatment into the model. Is there a way to
do this using R? (Additionally, the model is stratified by
randomisation period). I know that SAS can be
2006 Apr 18
1
adding lines to scatterplot3d
Hi to all,
I usually use R for simple 2D graphs so now I cannot solve the
following problem (which I suppose very simple too).
I'm using scatterplot3d. I want to add dotted lines parallel to the 3
axes, in order to create a sort of cage in the 3D box (so to represent
subdomains in my dataspace).
I saw that points3d can be used to draw points or lines to the existing
plot but actually