Hi, I met a probem recently and need your help. I would really appreciate it. I kept receiving the following error message when running a program: 'Error in svd(X) : infinite or missing values in x'. However, I did not use any svd function in this program though I did include the function pseudoinverse. Is the problem caused by doing pseudoinverse? Best regards, Tongtong
On Thu, 27 Jan 2005, WU,TONGTONG wrote:> Hi, > > I met a probem recently and need your help. I would really appreciate > it. > > I kept receiving the following error message when running a program: > > 'Error in svd(X) : infinite or missing values in x'. > > However, I did not use any svd function in this program though I did > include the function pseudoinverse. Is the problem caused by doing > pseudoinverse?Where did you find that function? It is not part of R as it ships, and it *may* be part of GeneTS, where it calls svd after squaring the matrix. But there are simpler pseudoinverse functions (e.g. ginv in MASS) that will not introduce that error. The tool you needed was traceback(): try it to see what it tells you here. -- 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
You haven't told us what you used to compute the pseudoinverse,
but I can get that error message using ginv in library(MASS). When I
then typed "ginv" (without the parentheses, it listed the code, and I
quickly saw "Xsvd <- svd(X)" [using R 2.0.1 under Windows 2000].
hope this helps.
spencer graves
p.s. The posting guide (www.R-project.org/posting-guide.html) can help
you find answers to many questions like this yourself, in addition to
improving your facility with language AND improving, I believe, your
chances of getting a reply that actually answers your question. In this
case, if you are not using "ginv" in library(MASS) and the discussion
above doesn't help you solve the problem otherwise, following the
posting guide would have made it much easier for someone like me to
provide a more useful answer.
WU,TONGTONG wrote:
>Hi,
>
> I met a probem recently and need your help. I would really appreciate
>it.
>
> I kept receiving the following error message when running a program:
>
>'Error in svd(X) : infinite or missing values in x'.
>
>However, I did not use any svd function in this program though I did
>include the function pseudoinverse. Is the problem caused by doing
>pseudoinverse?
>
>Best regards,
>Tongtong
>
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>PLEASE do read the posting guide!
http://www.R-project.org/posting-guide.html
>
>