Displaying 20 results from an estimated 2000 matches similar to: "Use R for data aggregation"
2005 Mar 26
1
lme: random effects of a quadratic term
Hello,
I am estimating the following model:
so2.lme<-lme(so2~1+I(alcadakm^2)+dia,data=subjectes2,na.action=na.omit)
And when I try to plot the random effects of the quadratic term with
respect to a covariate (mam) I get an error:
> so2.lmeRE<-ranef(so2.lme,augFrame=T)
> plot(so2.lmeRE,form=I(alcadakm^2)~mam)
Error in plot.ranef.lme(so2.lmeRE, form = I(alcadakm^2) ~ mam ) :
Only
2000 Sep 06
2
reusing external functions across libs
Hi,
I am searching for a way to solve the following problem:
I want to use an external function, defined in a dyn.load()ed shared
object, in another dyn.load()ed shared object.
Currently I have to take the sources (Fortran) from one libraries src/
directory and copy them into the src/ dir of the other library, resulting
in two copies of this function. This is bad for maintanance and maybe
also
2013 Feb 17
3
Select components of a list
Hi Gustav,
Try this:
lapply(1:length(models),function(i) lapply(models[[i]],function(x) summary(x)$coef[2,]))[[1]] #1st list component
[[1]]
#??? Estimate?? Std. Error????? z value???? Pr(>|z|) # pm10
#5.999185e-04 1.486195e-04 4.036606e+00 5.423004e-05
#[[2]]
#??? Estimate?? Std. Error????? z value???? Pr(>|z|) #ozone
#0.0010117294 0.0003792739 2.6675428048 0.0076408155
#[[3]]
#???
2019 May 16
3
ALTREP: Bug reports
Hello Luke and Gabriel,
Thank you very much for your quick responses. The explanation of STDVEC is
very helpful and I appreciate it! For the wrapper, I have a few new
questions.
1. Like Luke said a mutable object is not possible. However, I noticed that
there is one extra argument *deep* in the function duplicate. I've googled
all the available documentation for ALTREP but I did not find
2019 May 16
3
ALTREP: Bug reports
Hello,
I have encountered two bugs when using ALTREP APIs.
1. STDVEC_DATAPTR
>From RInternal.h file it has a comment:
/* ALTREP support */
> void *(STDVEC_DATAPTR)(SEXP x);
However, this comment might not be true, the easiest way to verify it is to
define a C++ function:
void C_testFunc(SEXP a)
> {
> STDVEC_DATAPTR(a);
> }
and call it in R via
> a=1:10
> >
2011 Jun 21
5
please help for mgcv package
i read a book from WOOD, there's an example which is talking about the
pollutant.
library(gamair)
library(mgcv)
y<-gam(death~s(time,bs="cr",k=200)+s(pm10median,bs="cr")+s(so2median,bs="cr")+s(o3median,bs="cr")+s(tmpd,bs="cr"),data=chicago,family=Possion)
lag.sum<-function(a,10,11)
{n<-length(a)
b<-rep(0,n-11)
for(i in 0:(11-10))
2012 Feb 13
2
finding and describing missing data runs in a time series
Hi -
I am trying to find and describe missing data in a time series. For instance, in the library openair, there is a data frame called "mydata":
library(openair)
head(mydata)
date ws wd nox no2 o3 pm10 so2 co pm25
1 1998-01-01 00:00:00 0.60 280 285 39 1 29 4.7225 3.3725 NA
2 1998-01-01 01:00:00 2.16 230 NA NA NA 37 NA NA NA
3 1998-01-01 02:00:00
2002 Dec 27
6
IP Alias problems
I have a few IP addresses attached to an interface without problems. I
also have some chrooted environments attached to these IP addresses. Is
there a way to make connections (telnet) from these environments look like
they are coming from the aliased IP''s rather than the main IP address?
Thanks for any help
Kevin.
2016 Aug 10
1
File Server member DC ACL permissions
I will choose to use the winbind.
Based on the link that Rowland said:
https://wiki.samba.org /index.php/Setup_Samba_as_an_AD_Domain_Member
I followed the steps as described in the tutorial.
I created symlinks.
In the main DC I added this line in smb.conf:
idmap_ldb: use RFC2307 = yes
Changed /etc/nsswitch.conf
passwd: files winbind
shadow: files
group: files winbind
hosts:
2019 May 16
0
ALTREP: Bug reports
Jiefei,
Inline.
On Thu, May 16, 2019 at 2:30 PM ??? <szwjf08 at gmail.com> wrote:
> Hello Luke and Gabriel,
>
> Thank you very much for your quick responses. The explanation of STDVEC is
> very helpful and I appreciate it! For the wrapper, I have a few new
> questions.
>
>
> 1. Like Luke said a mutable object is not possible. However, I noticed
> that there is
2011 Jul 21
0
Quoi D'Neuf, a beautiful Pinot Noir from the Loire
This bottle of Quoi D?Neuf by Herv? Villemade, a primeur from the Loire, was a real pleasure, a thirst wine that you sip without second thoughts and restriction to the last drop : This Pinot Noir with a bit of Gamay is fruity, gouleyant and fresh. This proves that even tasted several months after its release, a Vin Nouveau can deliver. It arrived on the market on the third thursday of november
2002 Dec 18
1
problem with 'gnls'
I'm working with data measured in a tunnel to estimate the
emission factor of heavy & light vehicles.
I tried to use 'gnls' and I get the following Error:
>> Error in "coef<-.corARMA"(*tmp*, value = c(174.267493382104, 173.412740072763 :
>> Coefficient matrix not invertible
Here is my R-code:
data <- d.plabutsch.neu
# calculating the starting
2019 May 16
0
ALTREP: Bug reports
Hi Jiefei,
Thanks for tryingout the ALTREP stuff and letting us know how it is going.
That said I don't think either of these are bugs, per se, but rather a
misunderstanding of the API. Details inline.
On Thu, May 16, 2019 at 11:57 AM ??? <szwjf08 at gmail.com> wrote:
> Hello,
>
> I have encountered two bugs when using ALTREP APIs.
>
> 1. STDVEC_DATAPTR
>
> From
2009 Feb 19
1
partial residuals & the output of residuals.lm(..., type="partial")
Dear list,
I would like to know how the function residuals.lm calculates the
partial residuals from an lm object with more than one predictor
variable. In other words what is residuals.lm(...,type="partial") doing
behind the scenes? According to the help file for residuals.lm
(?residuals.lm), "The partial residuals are a matrix with each column
formed by omitting a term from
2023 Dec 06
0
How to calculate relative risk from GAM model in mgcv package?
Hi R users,I am a beginner in the use of R. I need urgent help for my
thesis study.
<https://stats.stackexchange.com/posts/633206/timeline>
I have daily air pollution parameters PM10, PM2.5 CO, NO2, SO2, and O3. I
also have daily hospital admission numbers. Taking into account the effect
of weekends and holidays, I would like to used generalised additive model
(GAM) to explore the
2013 Apr 10
2
Optimization problem
As a simple example, I want to find minimum value for x^2, but it can't be
obtained by:
f<-function(x)x^2
optimize(f,lower=-1,upper=1)
What are other methods to deal with this? I tried DEoptim, still doesn't
work. Any suggustions will be extremely helpful! THanks!
Shelly
--
View this message in context: http://r.789695.n4.nabble.com/Optimization-problem-tp4663821.html
Sent from
2008 Dec 23
2
beginner data.frame question
I need some help understanding how on of the example data sets is
formatted in the basic R installation. If I load the Mona Loa CO2
data, with the command:
> data(co2)
I can view the data with:
> co2
And the data are in the form of 11 rows labeled as years (1994-2004)
and 12 columns labeled (Jan - Dec). This structure appears to be a
dataframe, however, if I type the command
2005 Feb 02
4
(no subject)
can you recommend a good manual for R that starts with a data set and gives
demonstrations on what can be done using R? I downloadedR Langauage
definition and An introduction to R but haven't found them overly useful.
I'd really like to be able to follow some tutorials using a dataset or many
datasets. The datasets I have available on R are
Data sets in package 'datasets':
1999 Jul 27
3
Preliminary version of ts package
There is now a preliminary version of a time series package in the R-devel
snapshots, and we would welcome feedback on it. It is based in part on the
packages bats (Martyn Plummer) and tseries (Adrian Trapletti) and in part
on code I had or have written. (Thanks for the contributions, Martyn and
Adrian!) Some of the existing ts code has been changed, for example to plot
multiple time series, so
2012 May 04
2
Off-Topic: Crime Statistics Don't Pay
WARNING: COMPLETELY OFF TOPIC -- Nothing to do with R.
I thought readers of this list might enjoy the following. The link to
the full article is at the bottom. I hope this is not "too"
inappropriate.
-------
Overconfidence in crime statistics doesn?t pay. In a new study, a team
of criminologists makes the case that reported crime rates should
acknowledge uncertainty in the data. The