similar to: How to solve A'A=S for A ?

It is not clear to me that one can. If the singular value decomposition of A is the triple product P d Q', then the singular value decomposition of A'A=S is Q d^2 Q'. The information about the orthonormal matrix P is lost, is it not? ********************************************************** Cliff Lunneborg, Professor Emeritus, Statistics & Psychology, University of Washington,

Given a matrix B, where B=A'A, how can I find A? In other words, if I have a matrix B which I know is another matrix A times its transpose, can I find matrix A? Thanks, Mike

Has anyone successfully check/build tseries for MacOSX? It seems like there is the same problem with symbols duplications. The -m like option does not seem to help. stefano

Dear R specialists, I have a multivariate statistics question that I want to submit to the R community (which conveys a very good statistical knowledge). I need to perform an optimal scaling based on a discrete variable and an ordinal variable. The discrete variable, Area, defines a geographical area. The ordinal variable, EducationLevel, describes the education level of individuals (the

While builds and validations of R-1.6.2beta_2002-12-20 were successful on several systems, there were a few failures: ------------------------------------------------------------------------ Apple Darwin 6.2 (MacOS 10.2.2) with gcc-3.2.1: gcc -dynamiclib -flat_namespace -undefined suppress -o .libs/libgslcblas.0.0.0.dylib sasum.lo saxpy.lo ... isamax.lo izamax.lo xerbla.lo -lc -install_name

gcc 3.2.1 is out and avoids the warnings about -I/usr/local/include shown by 3.1 and 3.2. Unfortunately, it seems to generate invalid code on 32-bit Solaris 2.7. (64-bit code via -m64 is OK.) On two separate installations example(Bessel) crashes in graphics.c because dd is not being passed down from clipText correctly. I don't think that is all, as compiling graphics.c under gcc-3.2 leads

I have build R-1.6.0 on Jaguar (actually on 10.2.2), using gcc 3.1 from Apple, g77 3.1 from fink, ATLAS from fink. It passes all checks OK. I also re-compiled the 233 packages listed below with the same setup. I have NOT tested all these packages in any detail. A tar.gz file with the whole /usr/local/lib/R will be on ftp://gifi.stat.ucla.edu on Tuesday. It will NOT include anything from fink

Small things, mostly. 1. Buildproblem. Well-known and annoying. Build fails if debugging is on (which is the default) because Debugging.h breaks devQuartz.c compiles. If debugging is switched off on the command line or in the environment, then devQuartz.c builds, but aquaconsole.c does not compile, because it needs Debugging.h. I do not want to edit Apple system files, and not files in the R

Pretty soon, hopefully, the RAqua version will make the Darwin/X11 version unnecessary. In the meantime, for convergence, I'll modify the Gifi version in various ways. -- It's 1.7.1 -- It no longer supports gnome -- It still uses Tcl/Tk for X11 (using 8.5 from CVS) !! It no longer uses anything from fink (readline and dlcompat as on Stefano's site, jpeg and png and teTeX from

With the current version from rsync (8/16, 19:00) I get make[3]: *** No rule to make target `helpsearch.c', needed by `Makefile'. Stop. make[2]: *** [R] Error 1 make[1]: *** [R] Error 1 make: *** [R] Error 1 === Jan de Leeuw; Professor and Chair, UCLA Department of Statistics; Editor: Journal of Multivariate Analysis, Journal of Statistical Software US mail: 9432 Boelter Hall, Box

RAqua now builds fine, but for some reason tcl/tk support cannot be compiled in. I get checking for /Library/Frameworks/Tcl.framework/tclConfig.sh... /Library/Frameworks/Tcl.framework/tclConfig.sh checking for /Library/Frameworks/Tk.framework/tkConfig.sh... /Library/Frameworks/Tk.framework/tkConfig.sh checking whether compiling/linking Tcl/Tk code works... no This is with configure

R-devel has the --with-lapack flag for configure. If you build R with --with-blas="-framework vecLib" --with-lapack="--framework vecLib" then the build goes through, using the native optimized BLAS and Lapack in /System/Library/Frameworks/vecLib.framework. Also, it works, in the sense that it does eigenvalue problems correctly. I don't have any timings yet, because I

Hello all, I've put together a quick and dirty menubar + dialogs + spreadsheet GUI for R using the RGtk package. Performance is not great (OOP is a real memory hog?), the design may be worse, but the hope is that it will be useful in an introductory stats course while we await the arrival of a real gui with ObveRsive and SciViews. The package can be found at

Hello all, I've put together a quick and dirty menubar + dialogs + spreadsheet GUI for R using the RGtk package. Performance is not great (OOP is a real memory hog?), the design may be worse, but the hope is that it will be useful in an introductory stats course while we await the arrival of a real gui with ObveRsive and SciViews. The package can be found at

Hello, I am trying to use R on a Mac running Mac OS X 10.2 (Jaguar) (installed from the Mac OS X/Darwin/X11 binaries on CRAN), but i get the following errors when I start it: dyld: /usr/local/lib/R/bin/R.bin Undefined symbols: /sw/lib/libreadline.4.2.dylib undefined reference to _tgoto expected to be defined in /usr/lib/libSystem.B.dylib /sw/lib/libreadline.4.2.dylib undefined reference to

Am I being stupid? I have made several attempts to download R for Macintosh and everything goes fine til I double-click. At this point the message 'can't find CarbonLib' appears. My system is 8.6, running on a G4. Cheers Bill -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-devel mailing list -- Read

It seems that someone was having trouble compiling R under Mac OS X 10.2, but I'm wondering if anyone is running the version available from http://www.apple.com/downloads/macosx/math_science/rformacintosh.html under OS X 10.2. This is important because I'm about to take delivery of a new Power Mac running 10.2! John Shonder Oak Ridge National Laboratory

Dear R users: I wonder anyone is aware of such a thing from lgamma() > lgamma(-0.8) [1] 1.747207 I thought it should be NA as in S-PLUS. Both R-1.3.1 and R-1.5.1 report this result. I don't have the latest R-1.6.1 so I don't know whether this is corrected or not. Happy holidays, Paul.

we are trying to adapt the configure in order to work with latest gcc3.3 (from apple) and g77 3.4 (from http://gravity.psu.edu/~khanna/hpc.html ) At the moment there is no need to define the __DEBUGGING__ but there is still a problem with the -lcc_dynamic does any of you know how to check for this library and explain why we see -lcc_dynamic often passed as an ld flag. Where to find doc on

I was obviously fascinated by Duncan's earlier message on RXLisp. I managed to build a working version of RXLisp for OS X, by some unabashed and rather uninformed hacking. I compiled XLISP-STAT using the gcc flags -fno-common and --no-cpp-precomp (not sure if they are necessary or not, they are part of an older hack). I "make libxlisp.so", using Duncan's replacement for the