search for: ttime

Displaying 9 results from an estimated 9 matches for "ttime".

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2008 Mar 07
5
Passing function to tapply as a string
Hi, Was wondering if it is possible to pass function name as a parameter, smth along this line param.to.pass<-c(1,'max','h') dd<-function(dfd, param=param.to.pass,...){ ttime.int <- format(ttime,fmt) data.frame( param[3] = tapply(dfd[,param[1]],ttime.int,param[3]), ...) } I know there is a as.formula expression but not quite sure if there is some way to accomplish what i need. Thanks -- View this message in context: http://www.nabble.com/Passing...
2004 Nov 02
3
time dependency of Cox regression
Hi, How can I specify a Cox proportional hazards model with a covariate which i believe its strength on survival changes/diminishes with time? The value of the covariate was only recorded once at the beginning of the study for each individual (e.g. at the diagnosis of the disease), so I do not have the time course data of the covariate for any given individual. For example, I want to state at the
2001 Mar 30
1
Date format
...00:00"? Thanks!! =Example 1===================================== > S <- 20010323120000 > sTime <- strptime(paste(S), format="%Y%m%d%H%M%S") > sTime [1] "2001-03-23 12:00:00" =Example 2===================================== > T <- 20010323000000 > tTime <- strptime(paste(T), format="%Y%m%d%H%M%S") > tTime [1] "NA" __________________________________________________ Do You Yahoo!? Get email at your own domain with Yahoo! Mail. http://personal.mail.yahoo.com/?.refer=text -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-...
2010 Oct 06
4
problem with abline
Hi All, I am running a scatter plot and trying to add a best fit line. I use an abline function, but get no line drawn over the points. I also get no error. I arm using V 2.10.0 on Windows 7. Here is my code, including the SAS transport file import: require (foreign) require (chron) require (Hmisc) require (lattice) clin <- sasxport.get("y:\\temp\\subset.xpt") attach(clin)
2010 May 15
1
barplot: invalid 'xlim' value
...-td830743.html#a830744 But subplot disconnects the data from the existing coordinate system. I've prepared my data to be easily uploaded, but the paste command into R took about 10-20 sec. on my machine to complete (I did pare down the dataset by 80% or so): library(zoo) #create a time series ttime.80.2<-seq(as.POSIXlt("2000-06-12 02:00","%Y-%m-%d %H:%M",tz=""),as.POSIXlt("2000-07-17 01:00","%Y-%m-%d %H:%M",tz=""),by="hour") #Load in the data for the base plot well.80.2<-read.table(textConnection("row~ID~date~Rea...
2003 Mar 12
1
simulating 'non-standard' survival data
...(n,3,9) #survival time and censoring variable: obsTime<-rexp(n,1) status<-ifelse(runif(n)>.2,1,0) obsTime<-obsTime[order(obsTime)] status<-status[order(obsTime)] dati<-matrix(-99,n,(1+2)) #hazard ratio as function of the explanatory variable xx, and survival time. HR<-function(ttime,xx){exp(.5)} #.5 is the log hazard ratio P<-outer(obsTime,x,HR) PP<-t(apply(P,1,function(x){sort(cumsum(sort(x,decreasing=T)),decreasing=T)} )) Pok<-P/PP for(i in 1:(n-1)){ j<- if(status[i]==1) sample(R,size=1,prob=Pok[i,]) else sample(R,size=1) ind<-which(R==j)...
2010 Mar 14
3
CRAN (and crantastic) updates this week
...m>>n of leaves is first reached. This latter method is appropriate for m-tip trees generated under a big class of models (details in the bd.gsa.taxa man page). * tsne (0.1-1) Unknown http://crantastic.org/packages/tsne A "pure R" implementation of the t-SNE algorithm. * ttime (1.0) Radhakrishnan Nagarajan http://crantastic.org/packages/ttime Translate neurodevelopmental event timing across species. Predict unknown event timings and investigate phylogenetic proximity by hiearchical clustering of the known and predicted event timings. * UScensus2000blkgrp (0.0...
2010 Jul 18
6
CRAN (and crantastic) updates this week
...traitr (0.7), tree (1.0-28), trio (1.1.10), trip (1.1-6), tripEstimation (0.0-33), truncnorm (1.0-4), TSdbi (2010.5-1), tsDyn (0.7-30), TSfame (2010.5-1), TShistQuote (2010.5-1), tsModel (0.5-3), TSMySQL (2010.5-1), TSodbc (2010.5-1), TSpadi (2010.5-1), TSPostgreSQL (2010.5-1), TSSQLite (2010.5-1), ttime (1.2), ttutils (1.0-1), tuneR (0.3-0), twitteR (0.1.6), udunits (1.3.1), umlr (0.3.0), uncompress (1.33), unmarked (0.8-6), untb (1.6-3), vardiag (0.1-3), varSelRF (0.7-2), vbmp (1.16.0), vcdExtra (0.5-0), vegan (1.17-3), vegdata (0.1.5), venneuler (1.0-2), VGAM (0.8-1), vowels (1.1), VPdtw (2.1-6)...
2006 Nov 17
1
gjournal on 6.x wont build
Hi all, I was intending on trying out gjournal on a new disk i've added in my desktop. I had a look to see what the most recent patch provided by Pawel and found http://people.freebsd.org/~pjd/patches/gjournal6_20061024.patch I created the directories as per Pawel's original post (http://lists.freebsd.org/pipermail/freebsd-fs/2006-June/001962.html) and the patch succeeded with no failed