Displaying 20 results from an estimated 4000 matches similar to: "CCDF plotting - axis labels+overlay"
2012 Apr 24
2
Function from ecdf to ccdf
Dear all,
I would like to calculate the complementary cumulative distribution function. As it is known, the ccdf is the 1-ecdf(X)==1-F(x). (From ?ecdf help is shown that ecdf returns a function which is the F(x)
I would like to use that function inside my function and after call curve (which accepts function as input). My code looks like that
onVector<-seq(1:100)
2010 May 26
2
Survival analysis extrapolation
Dear all,
I'm trying to fit a curve to some 1 year failure-time data, so that I can
extrapolate and predict failure rates up to 3 years. The data is in the
general form:
Treatment Time Status
Treatment A 28 0
Treatment B 28 0
Treatment B 28 0
Treatment A 28
2008 Sep 04
2
Projecting Survival Curve into the Future
Hello,
I have a survivor curve that shows account cancellations during the past 3.5 months. Fortunately for our business, but unfortunately for my analysis, the survivor curve doesn't yet pass through 50%. Is there a safe way to extend the survivor curve and estimate at what time we'll hit 50%?
We started a new program 3.5 months ago, and I believe that this set of accounts behaves
2007 Jan 09
0
Random effects and level 1 censoring
I have a question about constructing the likelihood function where there
is censoring at level 1 in a two-level random effects sum.
In a conventional solution, the likelihood function is constructed using
the density for failures and the survivor function for (in this case,
right) censored results. Within (for example) an R environment, this is
easy to do and gives the same solution as survreg
2009 Dec 03
1
Data frame/read.ftable
My apologies for this question but I?m stuck and I?m sure that there must be
an easy answer out there (and hope that someone will have mercy and point me
in the right direction).
I have a data file that looks like:
1 77 3
1 8 1
1 7 2
1 1 5
1 42 7
1 0 2
1 23 1
2 83 9
2 8 2
2 6 5
2 23 3
3 11 3
3 8 1
.
.... etc.
.
N 3 2
(FWIW, these are document, word reference, and word frequency counts.) I
2011 Feb 08
3
Parallel processing question ...
I am experimenting with parallel processing using foreach and seem to be
missing something fundamental. Cool stuff. I've gone through the list and
seen a couple of closely related issues, but nothing I've tried seems to
work.
I know that the results from foreach are combined, but what if there is more
than one variable within the loop? Below is a snippet (non-functioning) of
code that I
2009 Jan 04
0
Rattle 2.4.0 (Data Mining GUI using R)
Version 2.4.0 of Rattle has been released to CRAN.
The rattle package (http://rattle.togaware.com) is a multi platform
(GNU/Linux, Mac/OSX, MS/Windows) GTK based GUI for data mining (for
exploring data and building descriptive and predictive models). It has
undergone a lot of development over the past year. A companion book
introducing data mining using Rattle is under development, with a
draft
2009 Jan 04
0
Rattle 2.4.0 (Data Mining GUI using R)
Version 2.4.0 of Rattle has been released to CRAN.
The rattle package (http://rattle.togaware.com) is a multi platform
(GNU/Linux, Mac/OSX, MS/Windows) GTK based GUI for data mining (for
exploring data and building descriptive and predictive models). It has
undergone a lot of development over the past year. A companion book
introducing data mining using Rattle is under development, with a
draft
2011 Sep 26
0
Farmhouse in Provence
The Building Painting (http://www.micaroo.com/home-and-garden/wall-art/building-paintings.html) Farmhouse in Provence also known as Entrance Gate to a Farm with Haystacks was made in 1888 by Vincent van Gogh in Arles in Provence at the height of his career. Oil Paintings for sale (http://www.micaroo.com/home-and-garden/wall-art.html) Partially due to having been inspired by painter Adolphe
2006 Aug 26
2
Compiling wine on AMD64
I've been trying various ways of getting wine running on my 64 bit
ubuntu machine. So far I haven't been very successful. I am trying
the source for 0.9.20 and I'm using the latest k8 kernel in ubuntu.
I have an nvidia card and am using the latest glx drivers available
in ubuntu (1.0.8762).
I am using the guide here:
http://wiki.winehq.org/WineOn64bit
with help from here:
2005 Oct 07
3
Converting PROC NLMIXED code to NLME
Hi,
I am trying to convert the following NLMIXED code to NLME, but am
running into problems concerning 'Singularity in backsolve'. As I am new
to R/S-Plus, I thought I may be missing something in the NLME code.
NLMIXED
***********
proc nlmixed data=kidney.kidney;
parms delta=0.03 gamma=1.1 b1=-0.003 b2=-1.2 b3=0.09 b4=0.35 b5=-1.43
varu=0.5;
eta=b1*age+b2*sex+b3*gn+b4*an+b5*pkn+u;
2008 Jul 28
0
randomSurvivalForest 3.5.0 now available
Please find release 3.5.0 of the CRAN package "randomSurvivalForest"
now posted on CRAN. Thank you.
ubk2101 at columbia.edu
Udaya B. Kogalur, Ph.D.
Kogalur Shear Corporation
5425 Nestleway Drive, Suite L1
Clemmons, NC 27012
---------------------------------------------------------------------------------
CHANGES TO RELEASE 3.5.0
RELEASE 3.5.0 represents a significant upgrade in the
2008 Jul 28
0
randomSurvivalForest 3.5.0 now available
Please find release 3.5.0 of the CRAN package "randomSurvivalForest"
now posted on CRAN. Thank you.
ubk2101 at columbia.edu
Udaya B. Kogalur, Ph.D.
Kogalur Shear Corporation
5425 Nestleway Drive, Suite L1
Clemmons, NC 27012
---------------------------------------------------------------------------------
CHANGES TO RELEASE 3.5.0
RELEASE 3.5.0 represents a significant upgrade in the
2007 Oct 13
2
a question on impulse responses
Dear R users,
I am using the vars package to calculate the impulse response functions and the forecast error variance decomposition of a VAR model. Unfortunately I do not know whether these functions assume unit or one standard deviation shocks. I tried to look into the code of these functions, but in vain: neither irf, nor vars::irf, nor vars:::irf output the code of the functions. Does someone
2004 Jun 16
2
erf function documentation
Hi all. I may be wrong, (and often am), but in trying
to determine how to calculate the erf function, the
documentation for 'pnorm' states:
## if you want the so-called 'error function'
erf <- function(x) 2 * pnorm(x * sqrt(2)) - 1
## and the so-called 'complementary error function'
erfc <- function(x) 2 * pnorm(x * sqrt(2),
lower=FALSE)
Should, instead, it read:
2007 Oct 11
5
rearrange data columns
Dear R users,
I need to to the the following. Let a= 1 2 3
4 5 6
and b= -1 -2 -3 be (2x3) matrices.
-4 -5 -6
I need to combine the two matrices into a new (2x6) matrix like this:
ab = ( 1 -1 2 -2 3 -3 )
4 -4 5 -5 6 -6
How can this be done in R?
-----------------------------------------------------------------
?????? ???
2009 Aug 31
1
Problems with groups using samba + ldap
Hi,
I'm using Ubuntu 8.04 with samba 3.028a (ubuntu package) +LDAP and I'm
getting an odd problem.
I have a user and this user had 4 groups (1 principal and 3 complementary)
if I run id <user> in the console of samba server the command returns 4
groups (so LDAP is working fine).
But when I'm trying to access a samba share (with log level 5), I noticed
that samba returns that
2004 Nov 23
6
Weibull survival regression
Dear R users,
Please can you help me with a relatively straightforward problem that I
am struggling with? I am simply trying to plot a baseline survivor and
hazard function for a simple data set of lung cancer survival where
`futime' is follow up time in months and status is 1=dead and 0=alive.
Using the survival package:
lung.wbs <- survreg( Surv(futime, status)~ 1, data=lung,
2008 Oct 31
1
loglogistic cumulative distribution used by survreg
Dear all,
What is the cumulative distribution (with parameterization) used within
survreg with respect to the log-logistic distribution?
That is, how are the parameters linked to the survivor function?
Best regards,
Mario
[[alternative HTML version deleted]]
2007 Oct 12
1
calculate impulse responses
Dear R users,
I need perform structural analysis on a no intercept VAR model. Unfortunately the functions irf.VAR and dfev that come with the MSBVAR package only work with objects output by the reduced.form.var function, which seems to only evaluate VAR models with intercept. Is there a way to suppress the estimation of intercept term in reduced.form.var? Do I need to modify the code, and if I