Displaying 20 results from an estimated 2000 matches similar to: "Histograms per coding variable"
2003 Jan 30
1
Kruskal-Wallis, Friedman tests and Tukey HSD
Dear all
Is there any way of doing a Tukey HSD post-hoc test after a Kruskal-
Wallis or Friedman rank sum test (in the ctest package)?
Thanks in advance,
Albertus
Dr. Albertus J. Smit
Department of Botany
University of Cape Town
Private Bag Rondebosch
7700
South Africa
Tel. +27 21 689 3032
2002 Sep 25
2
Re-ordering the order of lattice graphics panels
Dear all
I have made some lattice graphs (bwplot(dead ~ treat | group,...).
'group' is a factor with three levels (Artemia larvae, Abalone larvae
and Abalone spat), and the result is a graph with three panels
corresponding to the levels in 'group', ordered in alphabetical order
from bottom to top, as expected.
How does one re-order the order in which the levels of
2002 Jul 16
3
dose.p in MASS
Dear all
I need to obtain an estimate of the 50% lethal dose (LD50) from a
logistic regression model obtained by applying the glm procedure to
some binomial data. The model appears to fit the data very well. I
used dope.p from MASS to try and find LD50.
The following output appears:
> dose.p(iso.glm.logit, cf = c(1,3), p = 1:3/4)
Error in dose.p(iso.glm.logit, cf = c(1, 3), p = 1:3/4) :
2003 Nov 06
1
Levelplot and NAs
Dear all
How does one get a levelplot (lattice library) to plot NAs in a
different colour to that specified in the default colorkey?
Thanks in advance,
Albertus
--
Dr. Albertus J. Smit
Department of Botany
University of Cape Town
PO Box Rondebosch
7700
SOUTH AFRICA
-------------------------------------------------
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2004 Apr 19
0
SE for combined data
Dear all
I have just had the question from a colleague. I know that it is not directly related to R (I will probably use R to do the analysis), but I hope someone can give us some insight:
Thanks,
AJ Smit
I sampled populations of a seaweed in the intertidal in order to estimate
the standing biomass of that seaweed at that site.
Due to clumped distribution patterns, I chose a stratified
2002 Oct 31
0
ANOVAs per grouping variable
Dear all
I have a question regarding repeating a series of nested ANOVAs.
The model is:
fit <- aov(response ~ treatment + plot/rep)
Treatment has three levels, there are three plots and each plot has
four replicates. Now, the experiment was also repeated six times
during the year. Ideally I would have liked to include sampling time
(month) as an additional factor in the analysis, but
2002 Jul 23
0
Comparing slopes of several linear models
Dear all
I have the following data (a shortened extract
shown; some replictates of time deleted) to which I
fitted the linear model given below:
time group mass
11 control 0.019
11 control 0.014
14 control 0.0306
14 control 0.0289
14 control 0.0236
17 control 0.0469
17 control 0.0709
11 five 0.0077
11 five
2004 Oct 25
2
aov documentation page: question
Dear all
I was looking at the aov documentation page and came across the
following which seems like a contradiction to me:
" This provides a wrapper to |lm| for fitting linear models to balanced
or unbalanced experimental designs." (I presume 'This' refers to aov)
and
"|aov| is designed for balanced designs, and the results can be hard to
interpret without
2000 Aug 12
1
Nonlinear regression question
Dear R users
I recently migrated from Statistica/SigmaPlot (Windows) to R (Linux), so
please excuse if this may sound 'basic'.
When running a nonlinear regression (V = Vmax * conc / (Ks + conc), i.e.
Michaelis-Menten) on SigmaPlot, I get the output listed below:
>>>Begin SigmaPlot Output<<<
R = 0.94860969 Rsqr = 0.89986035 Adj Rsqr = 0.89458984
Standard Error of
2012 Jun 23
3
How to upgrade from 5.8 to 6.2
Good day,
Please am new on CentOS, may you help me with the upgrade from 5.8 to
6.2 using?
Thanks a lot
--
--
You Truly
Eric Kom
System Administrator - Metropolitan College
_________________________________________
/ You are scrupulously honest, frank, and \
| straightforward. Therefore you have few |
\ friends. /
-----------------------------------------
2009 Feb 13
2
extracting parts of words or extraxting letter to use in ifelse-func.
Hello
I want to make some variables with the ifelse-function, but i don't know how
to do it.
I want to make these five variables;
b2$PRRSvac <- ifelse(b2$status=='A' | b2$status=='Aa',1,0)
b2$PRRSdk <- ifelse(b2$status=='B' | b2$status=='Bb',1,0)
b2$sanVac <- ifelse(b2$status=='C' | b2$status=='sanAa',1,0)
b2$sanDk <-
2006 Mar 14
2
Help. Failed event on md1
Hi all,
This morning I received this notification from mdadm:
This is an automatically generated mail message from mdadm
running on server-mail.mydomain.kom
A Fail event had been detected on md device /dev/md1.
Faithfully yours, etc.
In /proc/mdstat I see this:
Personalities : [raid1]
md1 : active raid1 sdb2[2](F) sda2[0]
77842880 blocks [2/1] [U_]
md0 : active raid1 sdb1[1] sda1[0]
2000 Apr 25
1
OpenSSH and Xauth
Hi...
I have tumpled over quite a big problem on my machine. I'm running
Debian Potato with OpenSSH-1.2.3 protocol 1.5 installed from the
debian packages. When I ssh from any computer (including my own) then
I can't get any programs to display X. I have turned ForwardAgent and
ForwardX11 on in my ssh_config. When I turn on debugging this is what
I get:
17:14 simpsons at lada% ssh -v
2007 Feb 13
2
How to print kernel global variable.
I am doing some testing on the adjtime syscall, and I want to
dump out the value of the kernel variable "timedelta", and I
am failing at it. Some of my attempts got "Module is no longer
loaded" and some got "Symbol table entry is not a data object"
I found some info that dtrace can print out kernel global
variable, so what am I missing here?
--
blu
"Remember
2009 Apr 28
1
the program calcs could not execute
Hello,
I want to instal a normal windows-programm from http://www.tess-kom.de:8080/ with wine, but its not working.
Error message:
>
> the program calcs could not execute
>
regards
manu
2002 Nov 27
1
[No Subject]
Hi,I try to calcualte AIC or Loglik to GARCH model,But the Packege Tseries do not deal with them.How can I calculate AIC or Loglike to GARCH Model By Packege Tseries?
Thanks.
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2024 Apr 19
1
Samba-tool gpo manage - The authenticated user does not have sufficient privileges
W dniu 18.04.2024 o?18:11, David Mulder via samba pisze:
> On 4/18/24 1:03 AM, Jaros?aw K?opotek - INTERDUO via samba wrote:
>> Hi all,
>>
>> I run cmd:
>> samba-tool gpo manage scripts startup add \
>> {31B2F340-016D-11D2-945F-00C04FB984F9} \
>> /var/lib/samba/sysvol/fartest.local/scripts/startup.bat
>>
>> with result:
>> [cut]
>>
2007 Dec 21
1
using apply to loop
Hi,
I am running the following loop, but it takes hours to run as n is big. Is there any way "apply" can be used? Thanks.
### Start
nclass <- dim(data)[[2]] - 1
z <- matrix(0, ncol = nclass, nrow = nclass)
n <- dim(data)[[1]]
x <- c(1:nclass)
# loop starts
for(loop in 1:n) {
r <- data[loop, 1:nclass]
classified <- x[r == max(r)]
2007 Dec 21
1
using apply to loop [SEC=UNCLASSIFIED]
Hi Louis,
You could try this:
# find the index of the maximum value in each row of _data_, #
disregarding the last column classified <-
apply(data[,-(nclass+1)],1,which.max)
## or, if the maximum may be repeated:
classified <- apply(data[,-(nclass+1)], 1, FUN = function(x) which(x ==
max(x)))
# the variable _truth_ is just the last column of _data_ ?
truth <- data[,nclass + 1]
?table
2017 May 18
2
Bug: floating point bug in nclass.FD can cause hist() to crash
Hello everybody,
This is a bug involving functions in core R package:
graphics::hist.default, grDevices::nclass.FD, and
base::pretty.default. It is not yet on Bugzilla. I cannot submit it
myself, as I do not have an account. Could somebody else add it for
me, perhaps? That would be much appreciated.
Kind regards,
Sietse
Sietse Brouwer
Summary
-------
Floating point errors can cause a data