torsten,
thanks for the mail. I have reinstalled the Matrix package, but still get the same problems. Any ideas?
matt nunes.
--On 04 August 2004 3:26pm +0200 Torsten Hothorn <[EMAIL PROTECTED]> wrote:
On Wed, 4 Aug 2004, Matt Nunes wrote:
hello.
I have a query about the Matrix package for R. I wrote some code a while ago using the Matrix package version 1.6.2 with an early version of R, to do some linear least squares for regression:
xn [,1] [,2] [,3] [,4] [1,] 1 0.7429352 0.5519528 0.4100652 [2,] 1 0.7443713 0.5540886 0.4124477 [3,] 1 0.7447385 0.5546355 0.4130584 [4,] 1 0.7459597 0.5564558 0.4150936 > > temp<-crossprod(xn) > temp [,1] [,2] [,3] [,4] [1,] 4.000000 2.978005 2.2171327 1.6506648 [2,] 2.978005 2.217133 1.6506648 1.2289297 [3,] 2.217133 1.650665 1.2289297 0.9149473 [4,] 1.650665 1.228930 0.9149473 0.6811865 > > solve.Matrix(temp,t(xn)) [,1] [,2] [,3] [,4] [1,] 33397.34 122081.7 -241005.4 85527.48 [2,] 21063.72 -664920.2 812316.0 -168459.99 [3,] -236935.74 1125548.2 -877776.2 -10835.64 [4,] 199314.69 -608045.8 297509.1 111221.72
(Note: here I used solve.Matrix since the generic solve said the matrix is singular).
I recently updated my versions of R to 1.9.1 and also the Matrix package, but I can't seem to get any similar equivalent matrix calculations to work (I get error messages like ".Call function name not in DLL for package Matrix"
this very much looks like a corrupted package installation. Try to reinstall `Matrix'
Torsten
or "Lapack routine dpotrf returned error code 4"). I have also tried using symmetric matrix commands, but to no avail. Can anyone help me out?
many thanks
Matt Nunes
______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
