This is already fixed in nlme_3.1-86!
Sigma <- corMatrix(tmp, covariate = 1:n) # segfault
Error in corMatrix.corARMA(tmp, covariate = 1:n) : 'object' has not been Initialize()d Please do check that things you report are not already fixed.
On Wed, 10 Oct 2007, btyner at gmail.com wrote:
Full_Name: Benjamin Tyner Version: 2.6.0 RC 2007-10-01 r43043 OS: WinXP Submission from: (NULL) (171.161.224.10) platform i386-pc-mingw32 arch i386 os mingw32 system i386, mingw32 status RC major 2 minor 6.0 year 2007 month 10 day 01 svn rev 43043 language R version.string R version 2.6.0 RC (2007-10-01 r43043) I have seen this in other versions/platforms as well. Brian Ripley informs me the segfault is in corStruct.c Code to reproduce: n <- 100 # example from Box and Jenkins p. 83 arcoefs <- c(0.8) macoefs <- c(-0.6) p <- length(arcoefs) q <- length(macoefs) require(nlme) tmp <- corARMA(value=c(arcoefs,macoefs), form=~1, p=p, q=q) Sigma <- corMatrix(tmp, covariate = 1:n) # segfault
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Brian D. Ripley, ripley at stats.ox.ac.uk Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/ University of Oxford, Tel: +44 1865 272861 (self) 1 South Parks Road, +44 1865 272866 (PA) Oxford OX1 3TG, UK Fax: +44 1865 272595