similar to: "Rcmd SHLIB" does not work

R-users E-mail: r-help@r-project.org Hi! R-users. I am just wondering what the definition of "dffits" in R language is. Let me show you an simple example. function() { library(MASS) xx <- c(1,2,3,4,5) yy <- c(1,3,4,2,4) data1 <- data.frame(x=xx, y=yy) lm.out <- lm(y~., data=data1, x=T) lev1 <- lm.influence(lm.out)$hat sig1 <-

R-users E-mail: r-help@r-project.org I have a quenstion on "gam()" in "gam" package. The help of gam() says: 'gam' uses the _backfitting algorithm_ to combine different smoothing or fitting methods. On the other hand, lm.wfit(), which is a routine of gam.fit() contains: z <- .Fortran("dqrls", qr = x * wts, n = n, p = p, y = y *

R-users E-mail: r-help@r-project.org My understanding is that package "mgcv" is based on "Generalized Additive Models: An Introduction with R (by Simon N. Wood)". On the page 126 of this book, eq(3.4) looks a quartic equation with respect to "x", not a cubic equation. I am wondering if all routines which uses cubic splines in mgcv are based on this quartic

Dear R users (r-help@r-project.org), The definition of AIC (Akaike information criterion) for normal error models has just been changed. Please refer to the paper below on this matter. Eq.(22) is the new definition. The essential part is RSS(n+q+1)/(n-q-3); it is close to GCV. The paper is temporarily available at the "Papers In Press" place. Kunio Takezawa(2012): A Revision of

R users E-mail: r-help at stat.math.ethz.ch I really appreciate information from Dr. Ligges and Dr. Wang. I managed to create DLL files by MinGW and use them as subroutines on R. Thank you very much again. ******** E-mail: takezawa at affrc.go.jp ******** ***** http://cse.naro.affrc.go.jp/takezawa/patent-e.html *****

R-users E-mail: r-help@r-project.org I have a quenstion on "gam()" in "gam" package. The help of gam() says: 'gam' uses the _backfitting algorithm_ to combine different smoothing or fitting methods. On the other hand, lm.wfit(), which is a routine of gam.fit() contains: z <- .Fortran("dqrls", qr = x * wts, n = n, p = p, y = y *

Hi All, What do you consider to be the best book(reference) on nonparametric regression? I am currently reading the book of Kunio Takezawa(2006): "Introduction to nonparametric regression". Is the book of Hardle(1990): "Applied nonparametric regression" better? or maybe another book? This is off topic, but most of the books is using R or S-plus. Thanks Hennie

R-users E-mail: r-help@r-project.org Hi! R-users. http://finzi.psych.upenn.edu/R/library/mvpart/html/xpred.rpart.html says: data(car.test.frame) fit <- rpart(Mileage ~ Weight, car.test.frame) xmat <- xpred.rpart(fit) xerr <- (xmat - car.test.frame$Mileage)^2 apply(xerr, 2, sum) # cross-validated error estimate # approx same result as rel. error from printcp(fit) apply(xerr, 2,

Hello R-list. I am a "long time listener - first time caller" who has been using R in research and graduate teaching for over 5 years. I hope that my question is simple but not too foolish. I've looked through the FAQ and searched the R site mail list with some close hits but no direct answers, so... I would like to estimate QAIC (and QAICc) for a glm fit using the

Hello, I'm using mvpart option xv="1se" to compute a regression tree of good size with the 1-SE rule. To better understand 1-SE rule, I took a look on its coding in mvpart, which is : Let z be a rpart object , xerror <- z$cptable[, 4] xstd <- z$cptable[, 5] splt <- min(seq(along = xerror)[xerror <= min(xerror) + xvse * xstd]) I interprete this as following: the

re: Cubic splines in package "mgcv" I don't have access to Gu (2002) but clearly the function R(x,z) defined on p126 of Simon Wood's book is piecewise quartic, not piecewise cubic. Like Kunio Takezawa (below) I was puzzled by the word "cubic" on p126. As Simon Wood writes, this basis is not actually used by mgcv when specifying bs="cr". Maybe the point is

Hi, I'm trying to find the corresponding Fortran77 subroutines for R function pt(). I tried some Fortran77 subroutines to compute the t distribution function. But none of them are as good as R function pt(). Does anyone can give me some information about it? Thank you very much! Tianyue

Hello r-devel, When compiling Fortran code containing BLAS functions and calling it using dyn.load, I am getting incorrect results. A small example with which I can reproduce the problem is below. I am running on OSX Mavericks (upgraded R, Xcode, etc per instructions on this list), but I do not think it is related since the check on my "blupsurv" package on r-forge seems to be showing

Hi, I'm new to this forum. I've installed wine and q4wine-0.120+r1-1.9 on SLED11 SP1. Whereas the wine shell works OK - iexplorer and notepad are active, I'm unable to make q4wine first launch- neither from the glass icon nor from GNOME terminal. The terminal after the command: me at linux:~> q4wine produces: Code: q4wine: symbol lookup error: q4wine: undefined symbol:

Well, having made the same installation of Rtools for rw1031 in a Win98 box (the former one was my Win95 labtop) to get advantage of significantly more RAM, I try C:\alobo\Rseg>Rcmd SHLIB test.c make: /bin/sh.exe: Command not found make: *** [libR] Error 127 despite the fact that I made a C:\bin directory and copied sh.exe there. Actually, if I just type sh in the MS-DOS window, it works

Hi all, I would like to preform an autologistic regression analysis on my thesis data. This is a form of logistic regression that accounts for spatial autocorrelation within and between predictor variables. To this end I have received some script from Dr. Fred Huffer which will allow for the analysis in R. It consists of an R script (autolog.R) that calls a compiled Fortran script (combo.o).

Prof. Ripley, Seems like mine is 629: c:\home>perl -v This is perl, v5.6.1 built for MSWin32-x86-multi-thread (with 1 registered patch, see perl -V for more detail) Copyright 1987-2001, Larry Wall Binary build 629 provided by ActiveState Tool Corp. http://www.ActiveState.com Built 12:27:04 Aug 20 2001 Will try a newer build and see. Regards, Andy > -----Original Message----- >

> From: Prof Brian Ripley [mailto:ripley@stats.ox.ac.uk] > > The answer seems to be: make sure you are using the tools in a current > tools.zip. Neither Andy nor Uwe were. Both the version of > make.exe and > cygwin1.dll are critical. > > It's also wise to have a fairly recent version of Perl (628 > or later), as > some earlier ones made errors in calls to

Has your environment variable path been set correctly? It's been a while that I'm not using R under windows but remember had experienced the same error. I remember that I had to put many paths as environment variable to build R packages properly. Best, Mathieu wolpert at stat.duke.edu a ?crit : > Hi, R team. > > I'm trying to build a dll from a c program to be invoked

Dear R-devel, I am converting some stand-alone programs (mixed C and F77) to R functions. I've run into two issues that I haven't been able to resolve. I've looked at the R-exts manual and Readme files, but haven't found answers. (1) Can I link to a (Win32) static library? Is there some option to RCMD SHLIB that allows this? I've tried RCMD SHLIB myprog.c -l