Displaying 14 results from an estimated 14 matches similar to: "survival function with a Weibull dist"
2020 Sep 30
4
Graficar una curva de tendencia potencial.
AF_E PS_E
90.838 2.206
83.139 1.751
134.272 3.710
84.043 2.076
105.184 2.788
157.249 3.783
50.280 1.027
96.973 2.355
123.582 3.398
60.417 1.236
123.501 3.315
90.128 1.566
193.783 5.167
116.036 2.994
100.289 2.216
56.943 1.106
102.272 2.692
145.579 3.810
53.105 1.202
127.212 3.061
102.838 2.383
126.352 2.723
13.661 0.190
164.352 4.870
159.945 4.160
54.382 0.884
128.253 3.598
181.208 4.767
145.118
2005 Apr 18
2
nls error in formula
Hi,
I'm a new R user, with a lot of questions. At the
moment I'm stoped on an error traying to fit a model:
> x <- sandeel ## numeric data (2500-60000)
> y <- Noss ## numeric data (0-1.2)
> A <- 0.8
> B <- 0.6
> C <- 1/40000
> nls( y ~ A-B*exp(-C*x))
Error in match.call(definition, call, expand.dots) :
.Primitive... is not a function
I'm
2008 Apr 07
1
problem- Unable To Locate DLL
Hi
I am trying to install "lme4" package, but have
problems intalling matrix package. I get the following
error:
RGui: Rgui.exe -Unable To Locate DLL
the dynamic link library Rblas could not found in the
specified path C:\Program
2008 Mar 25
0
Mixed-effects models: question about the syntax to introduce interactions
hello everyone,
I would like to as for advice for the use of ?lmer?
(package ?lme4?) and writing the proper syntax to best
describe my data using a mixed-effects model.
I have just started to use these models, and although
I have read some good examples (Extending the Linear
Model with R, Faraway 2005; and the R book, Crawley
2007), I am still not sure of the syntax to test my
hypothesis.
2006 Sep 26
5
putting stuff into bins...
Hi All,
I have a vector of data, a vector of bin breakpoints and I want to put my data
in the bins and then extract fanciful informations like the mean value of each bin.
I know I can write my own function, but I would have thought that R should have
somewhere a function that took as arguments something like (data, breaks, what
to do with the data in the bins). I surey could not find it
2009 Sep 09
2
ggplot2: mixing colour and linetype in geom_line
Hi all,
I try to represent a multiple curve graphic where the x-axis is the
temperature and the different y-axes are the different X (X22,X43,X44...)
some X corresponds to the same molecule (22 and 44 are for CO2 for instance)
so I use the same colour for them.
I wanna mix the linetype with the colour to be able to visually see the
difference between X43 and X45
The best I have done up to now
2005 May 03
0
Survival
Dear list,
I made survival analysis using Weibull regression.
I got significance in the analysis:
>anova(m1)
Df Deviance Resid. Df -2*LL P(>|Chi|)
NULL NA NA 2158 4933.109 NA
tratt -8 577.0669 2150 4356.042 1.988317e-119
and
> summary(m1)
Call:
survreg(formula = Surv(tempo, sensore) ~ tratt)
Value Std. Error z p
2009 Jul 14
0
Faster as.data.frame & save copy by doing names(x) <- NULL only if needed
A number of as.data.frame methods do
names(x) <- NULL
Replacing that with
if(!is.null(names(x)))
names(x) <- NULL
appears to save making one copy of the data
(based on tracemem and Rprofmem in a copy of R compiled
with --enable-memory-profiling)
and gives a modest but consistent boost in speed, e.g.:
# old new
# user system
2009 Apr 28
1
How to read the summary
How can I from the summary function, decide which glm (fit1, fit2 or fit3)
fits to data best? I don't know what to look after, so I would please
explain the important output.
> fit1 <- glm(Y~X, family=gaussian(link="identity"))
> fit2 <- glm(Y~X, family=gaussian(link="log"))
> fit3 <- glm(Y~X, family=Gamma(link="log"))
> summary(fit1)
Call:
2018 Apr 09
0
[PATCH] vhost-net: set packet weight of tx polling to 2 * vq size
On Mon, Apr 09, 2018 at 04:09:20AM +0000, haibinzhang(???) wrote:
>
> > On Fri, Apr 06, 2018 at 08:22:37AM +0000, haibinzhang(???) wrote:
> > > handle_tx will delay rx for tens or even hundreds of milliseconds when tx busy
> > > polling udp packets with small length(e.g. 1byte udp payload), because setting
> > > VHOST_NET_WEIGHT takes into account only
2006 Jul 15
0
How to Interpret Results of Regression in R
-----------------------------------------------------------------------------------------------------
Howdy, Gurus
I am appying R package for regression analysis as followings.
A dependent variable is jhnet that means ratio of dividing internal trip
with all trips in a traffic zone. There are many indepentent variables
including factor or dummy varibles such as parkfee, ohouse, Devt2,
corridor1.
2007 Dec 21
1
post hoc in repeated measures of anova
Hallo, I have this dataset with repeated measures. There are two
within-subject factors, "formant" (2 levels: 1 and 2) and "f2 Ref" (25
levels: 670, 729, 788, 846, 905, 1080, 1100, 1120, 1140, 1170, 1480,
1470, 1450, 1440, 1430, 1890, 1840, 1790, 1740, 1690, 2290, 2210,
2120, 2040, 1950), and one between-subject factor, lang (2 levels:1
and 2). The response variable
2008 Apr 09
4
apply lm() for all the columns of a matrix
Hi all,
My question is not really urgent. I can write a loop and solve the
problem. But I know that I'll be in a similar situation many more times so
it would be useful to find out the answer
Is there a fast way to perform linear fit to all the columns of a matrix?
(or in the one dimension of a multi-dimensional array.) I'm talking about
many single linear fits, not about a multiple fit.
2014 Sep 01
1
Correlation Matrix with a Covariate
R Help -
I'm trying to run a correlation matrix with a covariate of "age" and will
at some point will also want to covary other variables concurrently.
I'm using the "psych" package and have tried other methods such as writing
a loop to extract semi-partial correlations, but it does not seem to be
working. How can I accomplish this?
library(psych)
> set.cor(y =