Displaying 20 results from an estimated 200 matches similar to: "mixed-effects model using lmer"
2010 Nov 25
1
coxph strange result
The following fit does not make sense to me, please, correct me if I have a logical error.
> moddowsn
Call:
coxph(formula = Surv(start, stop, resp) ~ sn + matfac2, data = coxsn1,
method = "efron")
coef exp(coef) se(coef) z p
sn2 0.0497 1.051 0.02030 2.450 1.4e-02
sn3 -0.0532 0.948 0.02038 -2.610 9.0e-03
sn4 -0.0410 0.960
2007 Mar 14
0
Wald test and frailty models in coxph
Dear R members,
I am new in using frailty models in survival analyses and am getting
some contrasting results when I compare the Wald and likelihood ratio
tests provided by the r output.
I am testing the survivorship of different sunflower interspecific
crosses using cytoplasm (Cyt), Pollen and the interaction Cyt*Pollen
as fixed effects, and sub-block as a random effect. I stratified
2003 Apr 25
0
Diva 4BRI, asterisk and capidrv support ?
Hello,
I acquired a Diva Server 4BRI for an AsteriskPBX system and installed a
2.4.20 kernel modified with the latest eicon capi2.0 support from
www.melware.net.
Capi support seems to work fine: Asterisk+chan_capi answers the calls.
However if I try to use my old isdnutils apps by loading a i4l
compatibility layer then I have the following problems:
- if I use the diva2i4l module and start the
2007 Feb 20
0
Standardized residual variances in SEM
Hello,
I'm using the "sem" package to do a confirmatory factor analysis on data
collected with a questionnaire. In the model, there is a unique factor G
and 23 items. I would like to calculate the standardized residual
variance of the observed variables. "Sem" only gives the residual
variance with the "summary" function, or the standardized loadings with
the
2009 Feb 16
0
odd GARCH(1,1) results
Hi everybody,
I'm trying to fit a Garch(1,1) process to the DAX returns. My data
consists of about 2300 10day-logreturns in chronologically descending
order (see attachment). But if I use the garch function I get a very
high alpha_1 and a quite low beta, which doesn't make that much sense. I
think I am missing something, but have no idea what it might be. I'd
appreciate it a lot
2009 Jul 03
2
Error using the Rdonlp2 Package
Dear experts,
I'm attempting to solve a constrained optimization problem using the Rdonlp2
package.
I created a Lagrange function (L=f(x)-lambda(g(x)-c)), where x is a vector
of 16 parameters. This is what I'm using as objective function in the code
below. In addition, I set bounds on these parameters (par.u and par.l). When
I run the code, I get the error message shown below. Any idea
2012 Nov 03
1
Violin plot of categorical/binned data
Hi,
I'm trying to create a plot showing the density distribution of some
shipping data. I like the look of violin plots, but my data is not
continuous but rather binned and I want to make sure its binned nature (not
smooth) is apparent in the final plot. So for example, I have the number of
individuals per vessel, but rather than having the actual number of
individuals I have data in the
2002 Apr 29
2
tseries package segmentation fault (PR#1497)
Full_Name: Gang Liang
Version: 1.4.1
OS: mandrake-8.2
Submission from: (NULL) (128.32.81.135)
tseries version: 0.9-1
quadprog version: 1.4-4
mva version: 1.4.1
version:
platform i686-pc-linux-gnu
arch i686
os linux-gnu
system i686, linux-gnu
status
major 1
minor 4.1
year 2002
month 01
2008 Jul 14
2
Convert data set to data frame
Greetings,
I have a data set look like this:
> print(MyResult)
2 5 9 10
11 13
mean 6.108394 3.272211e+01 3.951703e+02 2.086217e+03
79.838867 2.592272e+04
median 1.288889 2.743511e+00 4.061491e+00 4.943710e+01
-2.821667 -3.040625e+00
var 2885.350595 2.343144e+05 1.022680e+06 1.200589e+07
365179.508831
2017 Nov 20
0
change colour in barplot
On 20/11/2017 6:38 AM, Maria Lathouri via R-help wrote:
> Dear all
> I know that it is a very simple question but it seems that I cannot change the colour in the bars.
> I have the following dataframe:
> A ? ? ? ? ? ? ? ?? B ? ? ? ? ? ? ? ? C ? ? ? ? ? D ? ? ? ?? E ? ? ? ? ? ? ? ? ?? F ? ? ? ? ? ? ? ? ?? G ? ? ? ? ? ? ? ?0.0.24 ? ? ? ?? 152460 ? ? ? ? 474 ? ? ? 5.5 ? ? ?? 612000 ? ?
2003 Mar 14
1
Formatting significant digits with trailing zeros
I need a function like signif(), but returns the rounded values as
character strings, formatted with trailing zeros where appropriate.
If anyone has one, I would sure appreciate a copy.
Thanks
-Don
Details:
signif() rounds a number to a specified number of significant digits,
for example:
> x <- c(2.503,2.477,0.1204)
> signif(x[1],3)
[1] 2.5
> signif(x[2],3)
[1] 2.48
2017 Nov 20
0
Σχετ: change colour in barplot
On 20/11/2017 7:09 AM, Maria Lathouri wrote:
> Dear all,
>
> I am really sorry for this. I have attached the script and a .csv file
> with an example.
The problem is that you have dat as a matrix with only one row.
barplot() applies the colours to the rows of dat; since you have only
one row, everything ends up blue.
You can fix this by creating dat as a vector using
2017 Nov 20
3
Σχετ: change colour in barplot
Dear all,?
I am really sorry for this. I have attached the script and a .csv file with an example.?
Hope this will help.
Many thanks,Maria
???? 11:53 ?.?. ???????, 20 ????????? 2017, ?/? Duncan Murdoch <murdoch.duncan at gmail.com> ??????:
On 20/11/2017 6:38 AM, Maria Lathouri via R-help wrote:
>? Dear all
> I know that it is a very simple question but it seems that I cannot
2011 Feb 03
3
coxph fails to survfit
I have a model with quant vars only and the error message does not make sense:
(mod1 <- coxph(Surv(time=strt,time2=stp,event=(resp==1))~ +incpost+I(amt/1e5)+rate+strata(termfac),
subset=dt<"2010-08-30", data=inc,method="efron"))
Call:
coxph(formula = Surv(time = strt, time2 = stp, event = (resp ==
1)) ~ +incpost + I(amt/1e+05) + rate + strata(termfac),
2003 May 21
2
Access Object's Objects HELP
Dear WizaRds,
A run of nls produces the following concise summary:
> summary(cs.wt)
Formula: 0 ~ wt.MM(conc, time, A1, a1, A2, a2)
Parameters:
Estimate Std. Error t value Pr(>|t|)
A1 4.814e+02 2.240e+01 21.495 0.0296 *
a1 7.401e-01 7.435e-02 9.956 0.0637 .
A2 1.613e+02 1.738e+01 9.280 0.0683 .
a2 1.770e-02 7.324e-03 2.417 0.2497
2012 Oct 29
4
RPM file download
I see a package "x246-0.120-5.20120303.el6 (i686)" available in my
Add/Remove Software tool. I can't find said package in any of the repos
I've searched through.
Can anyone point me to a link where I can download that package to my
local repo?
--
_
?v?
/(_)\
^ ^ Mark LaPierre
Registerd Linux user No #267004
https://linuxcounter.net/
****
2017 Nov 20
2
change colour in barplot
Dear all
I know that it is a very simple question but it seems that I cannot change the colour in the bars.
I have the following dataframe:?
A ? ? ? ? ? ? ? ?? B ? ? ? ? ? ? ? ? C ? ? ? ? ? D ? ? ? ?? E ? ? ? ? ? ? ? ? ?? F ? ? ? ? ? ? ? ? ?? G ? ? ? ? ? ? ? ?0.0.24 ? ? ? ?? 152460 ? ? ? ? 474 ? ? ? 5.5 ? ? ?? 612000 ? ? ? ? ? 59061000 ? ? ? 1540313
and here is the script:
2011 Jul 13
1
AR-GARCH with additional variable - estimation problem
Dear list members,
I am trying to estimate parameters of the AR(1)-GARCH(1,1) model. I have one
additional dummy variable for the AR(1) part.
First I wanted to do it using garchFit function (everything would be then
estimated in one step) however in the fGarch library I didn't find a way to
include an additional variable.
That would be the formula but, as said, I think it is impossible to add
2010 Dec 21
2
please Help me on a repeated measures anova
I currently work on a draft of an aquatic bioassessment. The conditions
tested are the following: ER river water T dechlorinated water control 0.5 +
0.5mg / L of malate T + 1 dechlorinated water control + 1g / L of malate T
ED dechlorinated water control SED + ER + river water sediment SED ED +
sediment + water dechlorinated. It is the result of AChE in muscle (fillet
of fish). The production of
2008 Dec 28
1
cox regression warning/error messages
Hello,
I am hoping for some advice regarding warning/error messages I
received when running a Cox regression
# message 1 - obtained while creating a plot of residuals
> plot (NV.zph, main = "groupNUSM - UNFIT", var= 'groupNUSM')
Warning messages:
1: In approx(xx, xtime, seq(min(xx), max(xx), length.out = 17)[2 * :
collapsing to unique 'x' values
2: In