Displaying 15 results from an estimated 15 matches for "boule".
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baule
2003 Oct 31
4
dnorm() lead to a probability >1
Howdee,
One of my student spotted something I can't explain: a probability >1 vs a
normal probability density function.
> dnorm(x=1, mean=1, sd=0.4)
[1] 0.9973557
> dnorm(x=1, mean=1, sd=0.39)
[1] 1.022929
> dnorm(x=1, mean=1, sd=0.3)
[1] 1.329808
> dnorm(x=1, mean=1, sd=0.1)
[1] 3.989423
> dnorm(x=1, mean=1, sd=0.01)
[1] 39.89423
> dnorm(x=1, mean=1, sd=0.001)
[1]
2006 May 24
2
changing font size in plot(effect())
I can't seem to be able to change the font size in an effect display. I've
tried the following:
> par(cex.lab=4)
> plot(effect ("alti",reg8), ylab="detection probability")
and
> plot(effect ("alti",reg8), ylab="detection probability", cex=4)
but nothing changes. Can anyone help me?
thanks.
Emilie Berthiaume
graduate student
2008 Feb 18
2
skip non-converging nls() in a list
Howdee,
My question appears at #6 below:
1. I want to model the growth of each of a large number of individuals using
a 4-parameter logistic growth curve.
2. nlme does not converge with the random structure that I want to use.
3. nlsList does not converge for some individuals.
4. I decided to go around nlsList using:
t(sapply(split(data, list(data$id)),
function(subd){coef(nls(mass ~
2011 May 04
1
Outlier removal by Principal Component Analysis : error message
...ers thanks to "map.identify"
out=map.identify(scores[,,5])
Erreur dans `[.data.frame`(x at data, , j, drop = FALSE) :
undefined columns selected
Does anybody understand where the problem comes from ?
And does anybody know another mean to find spectra outliers ?
Thank you in advance.
Boule
--
View this message in context: http://r.789695.n4.nabble.com/Outlier-removal-by-Principal-Component-Analysis-error-message-tp3496023p3496023.html
Sent from the R help mailing list archive at Nabble.com.
2004 Sep 30
1
function by
Hi,
I'm just getting started with R and I'm having problems with some simple
operations: I want to get the the sum of the column "SStot" for each year using
the function by. The data set is named "SS". I've tried this:
by (SS, year, sum(SStot))
and it's not working. Is it because there's a different number of rows for each
year? How else can I do
2005 Mar 02
1
Applying a function to all combinations of factors
Is there a way to apply a function, say cor(), to each combination of some
number of variables, and this, without using loops?
For example, I have day, hour, var1 and var2. How could I compute
cor(var1,var2) for each day*hour combination and obtain a matrix with day,
hour and the cor value for each combination?
Thanks for your time,
Marc
===================
Marc Bélisle
Professeur adjoint
2005 Nov 01
1
function effect and standard error
Hi list!
I did the following regression:
reg1 <- glm(alti~sp + ovent + vivent + nuage, family=gaussian, data=meteo1)
I was interested in knowing the effect of the species (sp) in reg1 and so I used the function «effect»:
effect.sp <- effect ("sp", reg1, se=TRUE)
with this output:
sp
AK BW NH OS RT SS
2.730101 2.885363 2.753774 2.750311
2008 Feb 15
2
lmList, tapply() and lm()
Howdee,
*** I know that the lmList() function exists, yet I don't want to use it.
***
Would anyone be kind enough to tell how I can apply the function lm() to
each level of a given factor so to obtain the intercept and slope for each
factor level within a matrix?
For instance, suppose a dataframe containing 3 variables: id, x and y.
I want to compute the function lm() for each level
2009 Sep 01
1
avoiding local users
Dear all,
I am new to samba. have configured a samba share, pls see config file
below and my problem is that the share works successfully however to
work I need to create an equivalent user locally , in the case ' boule
' . Is there a way to authenticate to the domain , force user and
group as apache and having the valid users not created locally on the
machine ?
tnx
konrad
# This is the main Samba configuration file. You should read the
# smb.conf(5) manual page in order to understand the options listed
#...
2012 Dec 15
2
troubles reading a text file
Dear R experts,
For quite some time I have been trying to solve a mistery of reading a seemingly trouble-free text file. The data is temperature reconstruction arranged as a huge grid, preceded by seven "header lines" (which you see better if file is opened in Firefox or Chrome).
This is the data (gridded temperature reconstruction)
2008 Jan 29
0
number of rescaling cycles in decorana
How do one dertermine the optimal number of rescaling cycles to use when
performing DCA using the decorana function (library vegan)?
Thanks for your time,
Marc
===================
Marc Bélisle
Professeur adjoint
Chaire de recherche du Canada en écologie spatiale et en écologie du paysage
Département de biologie
Université de Sherbrooke
2500 Boul. de l'Université
Sherbrooke, Québec
J1K 2R1
2008 Feb 19
0
nlsList - Error in !unlist(lapply(coefs, is.null))
Howdee,
I am able to fit a 4-parameter logistic growth curve to a dataset which
comprise many individuals (using R v. 2.3.1). Yet, if I want to obtain the
parameters for each individual (i.e., for each 'id') using nlsList, then I
obtain an Error message which I have trouble interpreting. Any advice as to
how I can solve this problem?
Thanks for your time,
Marc
> reg <-nls(mass ~
2013 Feb 14
1
Nomogram after Cox Random Effect (frailty) model
Dear R-users,
I am a novice R-user with some experience in using the RMS package for taking nomograms after various survival models.
This time, I am trying to plot a nomogram after a Random Effects Cox, implemented by the "coxme" package. My questions are:
1. Is it possible to take a nomogram directly after the coxme survival function?
2. If not is there a way to take the linear
2009 Jun 05
3
from 3 numeric variables to a string
Hi there,
I have 3 numeric variables: day (e.g., 05), month (e.g., 06), year (e.g.,
2009).
I would like to create a (string) variable of the following form:
month/day/year (e.g., 06/05/2009).
I would be grateful to anyone who could point me toward a solution.
Sincerely,
Marc
===================
Marc B?lisle
Professeur agr?g?
Chaire de recherche du Canada en ?cologie spatiale et en ?cologie
2004 Jun 06
0
*** Asterisk Sunday News: The SIP NAT Special
...IPv6, but for most of us, that's also a vision of the future.
(And there's no IPv6 support in Asterisk - until you start adding it!)
There's sunshine and blue skies outside, so you will not find me on
the IRC today, more likely in the garden outside taking
care of my flowers or playing Boule Petanque. Maybe later this evening,
european time...
And if you have topics for me to include in Asterisk Sunday News, mail
me off list :-)
Have a nice Asterisk week!
/Olle