[R] Fwd: Re[2]: B-spline/smooth.basis derivative matrices

2012-03-12 Thread Vassily Shvets
--- On Mon, 3/12/12, aleksandr shfets wrote: > From: aleksandr shfets > Subject: Fwd: Re[2]: [R] B-spline/smooth.basis derivative matrices > To: "Vassily Shvets" > Received: Monday, March 12, 2012, 5:15 PM > > > > Пересылаемое сообщение >

[R] Fwd: Re[2]: B-spline/smooth.basis derivative matrices

2012-03-12 Thread Vassily Shvets
--- On Mon, 3/12/12, aleksandr shfets wrote: > From: aleksandr shfets > Subject: Fwd: Re[2]: [R] B-spline/smooth.basis derivative matrices > To: "Vassily Shvets" > Received: Monday, March 12, 2012, 5:15 PM > > > > Пересылаемое сообщение >

[R] evaluating derivative matrices of spline functions

2012-02-24 Thread Vassily Shvets
Hello, I've noticed that SPLUS has a function for evaluating the derivative matrices of splines. I've also noticed that there's a function in R for evaluating matrices from smooth.spline; maybe someone knows if something has been written to evaluate matrices from 'smooth.basis'? regards, s

[R] B-spline/smooth.basis derivative matrices

2012-02-24 Thread Vassily Shvets
Hello, I've noticed that SPLUS seems to have a function for evaluating derivative matrices of splines. I've found the R function that evaluates matrices from 'smooth.spline'; maybe someone has written something to do the same with smooth.basis? regards, s ___

[R] Colloc Infer: some further explanation due?

2012-02-23 Thread Vassily Shvets
Hello, I've been working with Colloc Infer. Having set up an analysis for a data set, the response to my 'outeropt' input is Error in more$fn(times, devals, pars, more$more) : argument "more" is missing, with no default Having double (or more) checked the other elements of the analysis, usi

[R] CollocInfer

2012-01-25 Thread Vassily Shvets
Hello, I'd like to address the relatively new CollocInfer analysis software. I haven't seen other CollocInfer threads on the list. I'd appreciate hearing: 1/if anyone has used it; 2/ specifically about the 'more$fn' in connection with 'Profile.LS.' thanks, and regards, s (If there's another dis

[R] R- CollocInfer data

2011-12-08 Thread Vassily Shvets
Hello, I'm trying to go through the analyses in the CollocInfer introductory pdf file, particularly the NSdata. I seem to have loaded everything correctly but can't find any of the data sets for this package. Has anyone else had this experience? regards, S ___

[R] estimation of ode from data

2011-10-21 Thread Vassily Shvets
Hello, I'm used to working with R in estimation of distributions and statistical models. I'd like to estimate a simple model of an output y(t) based on a concentration as independent variable, using a timed series of experimental data; I've seen this I think somewhere in R? I'd appreciate to h

Re: [R] stochastic models for population growth

2011-02-05 Thread Vassily Shvets
#x27;m sure there's something in: http://cran.r-project.org/web/views/Environmetrics.html Michael D On Thu, Jan 20, 2011 at 23:57:18 -0800 (PST), Vassily Shvets wrote: Hello, Having measured two populations' characteristics at one particular time[with great precision] with R, I would like to

[R] stochastic models for population growth

2011-01-21 Thread Vassily Shvets
Hello, Having measured two populations' characteristics at one particular time[with great precision] with R, I would like to extend this to measuring the same populations starting at t1, and then again at t2, and try to develop a growth model (something like dpop1/dt=r*pop^(...),dpop2/dt=r*pop^(

[R] dynamic model strategy

2010-12-23 Thread Vassily Shvets
Hello, I'm hoping someone may know the most likely R package for a multivariate population model for comparing groups? That is, I'd like to estimate a (stochastic) model for one batch of experiments against a different batch growing under different conditions. I'm a bit familiar with grofit, but