search for: hyman

...t truncated data. This function is useful, but I need to fit parametric models other than Weibull. Any suggestions of functions that can fit parametric survival models other than Weibull on left truncated, right censored data would be greatly appreciated. Kind Regards, Beth -------------------- Hymans Robertson LLP is a limited liability partnership registered in England and Wales with registered number OC310282. A list of members of Hymans Robertson LLP is available for inspection at One London Wall, London, EC2Y 5EA, the firm's registered office. Hymans Robertson LLP is authorised and re...

...seco.monash.edu.au/~hyndman/Rlibrary/interpcode.R ####################################### cm.spline <- function (x, y = NULL, n = 3 * length(x), method = "fmm", xmin = min(x), xmax = max(x), gulim=0) # modification of stats package spline to produce co-monotonic # interpolant by Hyman Filtering. if gulim!=0 then it is taken as the upper # limit on the gradient, and interpolant is gradient limited rather than # monotonic. Modifications from R stats package spline() # (c) Simon N. Wood & Rob J. Hyndman. 2002. { x <- xy.coords(x, y) y <- x$y x <- x$x nx...

Has anyone got a function for smooth monotonic interpolation of a univariate function? I'm after something like the NAG function PCHIM which does monotonic Hermite interpolation. Alternatively, montononic cubic spline interpolation. Please reply directly. Rob Hyndman ___________________________________________________ Rob J Hyndman Associate Professor & Director of Consulting

Hi all, I read in a column which looks like "chr1:000889594-000889638", and need to break them into three columns like "chr1:", "000889594" and "000889638". How shall I do in R. Thanks a lot for your suggestions! Bill

May I ask a clinical question? For a trial, we have a treatment group of small size, say 30 patients. We want to selectmatching control patients from a bigger group (100 patients) in terms of several clinical variables, such as age, tumor stage etc. This practice is to select the closest matching set of control cases. I wonder if R has any routine or package that can help with this problem.

Dear all, Does any one know how to remove part of the string? For example, "LTA4H||Leukotriene A4 hydrolase" is a gene name plus gene description. I hope to remove "||Leukotriene A4 hydrolase". What would be the R code to do that using gsub()? Many thanks! Bill

Dear all, Does any one know if any R package or function can do Ordinary Least Products regression? Many thanks! Bill

...--------------------------------------------------------------- "Pseudo-colored pictures of a person's brain lighting up are undoubtedly more persuasive than a pattern of squiggles produced by a polygraph. That could be a big problem if the goal is to get to the truth." -Dr. Steven Hyman, Harvard

...BSD, Linux or Solaris If you have an interest in this opportunity, please apply at http://www.verisign.com/careers/index.html , click on the "current openings" tab and search by req #00000686, and then click on the link to apply... If there are specific questions, please email me at ehyman@verisign.com thank you!! Eliot Eliot Hyman VeriSign - Snr. Technical Recruiter 21355 Ridgetop Circle, Dulles, Va. 20166

Hi friends, Does anyone know how to make truncated y axis with cut mark (\\) in R plot? Many thanks! Bill

Dear all, I have a problem. I have m variables each of which has n observations. I want to calculate pairwise correlation among the m variables and store the values in a m x m matrix. It is extremely slow to use nested 'for' loops if m and n are large. Is there any efficient alternative to do this? Many thanks for your suggestions!! Bill

Dear all, Does any one know how to calculate the risk (death rate) at some time point (say 5 yrs) based on Kaplan-Meier curve in coxph model in R? I know how to fit the survival data with coxph. But need to calculate risk at some time point. Many thanks. Bill

...--------------------------------------------------------------- "Pseudo-colored pictures of a person's brain lighting up are undoubtedly more persuasive than a pattern of squiggles produced by a polygraph. That could be a big problem if the goal is to get to the truth." -Dr. Steven Hyman, Harvard

Version: 2.0.4 and git Kernel tested: 3.10.70 Description: make install fails with: No rule to make target `headers_install'. File impacted: scripts/Kbuild.install Error Received: make[2]: *** No rule to make target `headers_install'. Stop. make[1]: *** [header] Error 2 make: *** [install] Error 2 Issue: KLIBCKERNELSRC=`pwd`/linux/usr points to Makefile without headers_install rule.

...om name= to .NAME= in R 2.13.0, but some packages were still using the old name. This is currently a warning, but will be an error in future. o step() no longer tries to improve a model with AIC of -Inf (a perfect fit). o spline() and splinefun() gain a new method "hyman", an implementation of Hyman's method of constructing monotonic interpolation splines. (Based on contributions of Simon Wood and Rob Hyndman.) o On Windows, the C stack size has been increased to 64MB (it has been 10MB since the days of 32MB RAM systems). P...

...om name= to .NAME= in R 2.13.0, but some packages were still using the old name. This is currently a warning, but will be an error in future. o step() no longer tries to improve a model with AIC of -Inf (a perfect fit). o spline() and splinefun() gain a new method "hyman", an implementation of Hyman's method of constructing monotonic interpolation splines. (Based on contributions of Simon Wood and Rob Hyndman.) o On Windows, the C stack size has been increased to 64MB (it has been 10MB since the days of 32MB RAM systems). P...

...om name= to .NAME= in R 2.13.0, but some packages were still using the old name. This is currently a warning, but will be an error in future. o step() no longer tries to improve a model with AIC of -Inf (a perfect fit). o spline() and splinefun() gain a new method "hyman", an implementation of Hyman's method of constructing monotonic interpolation splines. (Based on contributions of Simon Wood and Rob Hyndman.) o On Windows, the C stack size has been increased to 64MB (it has been 10MB since the days of 32MB RAM systems). P...