similar to: Multivariable linear regression

> > Hello everyone, > > I have the following R code for a multivariable function: > > > > fn2<-function(x,y,z){(y+2*z)/(5*y-x*z)} > > > > fn2(-5,-2,3) > [1] 0.8 > > > > No problems. > > === > > If, however, I call the function using a vector substitution for the > arguments, R sees this as 3 separate calls to the function while

Given a square matrix of variables X, is there any way to compute a multivariable correlation among all the variables in the array? It is possible to calculate the correlation of all pairs of variables in the array, but I want to know the correlation of all the variables taken together, i.e. for the matrix X=x1 x2 x3 x4 x5 x6 x7 x8 x9 I don't want the pair-wise correlations

The majority of the functionality present in the gstat stand-alone program (http://www.gstat.org/) is now available as a package/library for the S language (R, S-Plus), again called gstat. The package provides multivariable geostatistical modelling, prediction and simulation, as well as several visualisation functions. Gstat was started 10 years ago and was released under the GPL in 1996; the

The majority of the functionality present in the gstat stand-alone program (http://www.gstat.org/) is now available as a package/library for the S language (R, S-Plus), again called gstat. The package provides multivariable geostatistical modelling, prediction and simulation, as well as several visualisation functions. Gstat was started 10 years ago and was released under the GPL in 1996; the

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Hello, I try to find a function for M-estimation in multivariate linear regression model (function that can estimate betas in my model: y=x * beta + e, where y is a matrix). I´ve searched R-site for a long time, but I am hopeless. I would like to ask, if there is any function for M-estimation in multivariate linear regression model in R. I know I can estimate betas in my model by rlm() function

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Hi, Background: I''m currently stuck getting my basic rails application working on dreamhost. I have gone throught the doco. Note that I can via my unix account run "ruby script/server" and get the application working via webbrick. The problem I am having is that trying to go to the app via the normal apache approach my browser just sits and spins with nothing coming

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[apologies but dreamhost forums are down & I''m keen to get a rails up on my dreamhost account but the following isn''t clear to me - I''m just hoping one of the rails dreamhost users can set me straight] I''m having difficulty in PUTTY to login to my unix account. I''ve tried by using Putty SSH to access

I know that mvrnorm from MASS (generously provided by Profs. Venables and Ripley) can be used to generate multivariable normal data that can be used in a linear regression with certain desired characteristics (e.g. a given mean for each variable as well as a given variance-covariance pattern). Is there any similar facility that can be used to generate data for (1) a logistic regression and (2) a

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I''ve tried setting up an Hello World app with Rails (no database), on a Dreamhost account. I used the configuration I found here http://www.mail-archive.com/camping-list at rubyforge.org/msg00114.html with the proper paths. But I keep getting Internal Server Errors (500). On the error.log I found this [Sun Jul 22 15:32:07 2007] [error] [client 82.154.48.138] FastCGI: comm with (dynamic)

I wish I could be more clean in the subject but I honestly don''t know what to point at for the problem. I am trying to deploy a rails app to my external host (dreamhost). It works great in development on my machine but when It gets into production on dreamhost Data seems to be missing when I try and submit the form. Here''s what it looks like when it works... Processing

I''m getting ready to sign up with DreamHost, but my application is missing the ActionMailer features. First, can anyone provide some real code to send an email upon comment submission? Second, is it easy to setup ActionMailer on a DreamHost server? Thanks! -- Posted via http://www.ruby-forum.com/.

My hosting provider is Dreamhost, and for some reason can''t figure out something that should not be that hard to do. Being a linux newbie isn''t helping me much either :-) On Dreamhost, each domain gets its own subdirectory. To setup my web app for each domain, I just go to the parent directory of that domain in a telnet session, and type "rails mydomain.com", and

Everything works like a charm locally, but running in production (Dreamhost shared with Passenger if it matters), "These gems that this application depends on are missing \n -rmagick" Rmagick is installed on dreamhost, but I have also copied the gem into the vendor directory, so it''s not even found within it''s local files. I''m using config.gem

Hi, I am working on a multivariate linear regression of the form y = Ax. I am seeing a great dispersion of y w.r.t x. For example, the correlations between y and x are very small, even after using some typical transformations like log, power. I tried with simple linear regression, robust regression and ace and avas package in R (or splus). I didn't see an improvement in the fit and