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Apologies for the obvious, but just to clarify: there is no reason to "justify" a PCA -- it's just an eigen decomposition of a matrix and is therefore "justified" by linear algebra. If one wants to determine whether some subset of the eigenvectors = principal components suffice to "represent" the data in some sense, then that is where distributional

I just asked a question. If I was too vague, then i am sorry. I dont expect anyone to help me, but I thought that it was ok to put the question out there in case someone wanted to help me. I didnt expect abject hostility for it. Human decency was the only thing I did expect. If my question was a pain,badly formatted, or too juvinile, then i have no problem being ignored.I asked a question

...unctions. These are the only occasions, beside container mapping functions, where the use of nested function becomes really interesting and a thoroughly clean implementation becomes a must. The fact remains that Pascal and Modula features such as lexical nesting are generally shunned upon by the C subculture and thus receive a poor deal in the world of open software where there is no life beyond GNU, C and Unix. /dm

Dear friends - I'm using Tinn-R in Windows and find it OK. My son is running MacOS and is just starting using R and I know nothing about MacOS and R but we seem to have difficulties in finding something similar to Tinn for MaC. What are your suggestions? Thanks a lot! Troels Ring, MD Aalborg, Denmark

Hi, I am a newbie in R and was working on some DNA data represented as strings of A,C,T and G (also wild-character like M and X). I use the Bioconductor package in R. Currently I need to convert a string of the form "ACCTGMX" to "1223400" i.e. A is replaced by 1, C with 2, T with 3, G with 4 and any other character with a 0. I checked with 'replace' and also with a

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Four years ago, I faced a real dilemma in my business: the Visual Voice PRI dll had a bug that considered unanswered any call after ringing for 20 seconds. This bug was in fact killing my business, because for international calling, the setup of the call was already close to 20 seconds on many cases. Furthermore, the vendor, Artisoft, had cowardly sold the software to Dialogic, and Intel-Dialogic

On 25/02/2011 21:22, Ben Ward wrote: > > -------- Original Message -------- > Subject: Re: [R] ANOVA and Pseudoreplication in R > Date: Fri, 25 Feb 2011 12:10:14 -0800 > From: Bert Gunter<gunter.berton at gene.com> > To: Ben Ward<benjamin.ward at bathspa.org> > CC: r-help<r-help at r-project.org> > > > > I can hopefully save bandwidth here by