search for: eys

R-users E-mail: r-help@r-project.org Hi! R-users. I am just wondering what the definition of "dffits" in R language is. Let me show you an simple example. function() { library(MASS) xx <- c(1,2,3,4,5) yy <- c(1,3,4,2,4) data1 <- data.frame(x=xx, y=yy) lm.out <- lm(y~., data=data1, x=T) lev1 <- lm.influence(lm.out)$hat sig1 <-

I wanted a simple function for bilinear interpolation on a 2-D grid, and interp.surface() in the fields package didn't quite suit my needs. In particular, it requires uniform spacing between grid points. It also didn't have the "visual" reference frame I was looking for. Here is an alternative function, followed by an example. # A function for bilinear interpolation on a 2-d

Dear r helpers I run the following code for nested logit and got a message that Error in optim(c(0, 0, 0, 0, 0.1, -2, -0.2), fr, hessian = TRUE, method = "BFGS") : initial value in 'vmmin' is not finite What does this mean? and how can I correct it? Thank you June > yogurt = read.table("yogurtnp.csv", header=F,sep=",")> attach(yogurt)>

Dear Rhelpers I have the problem with initial values, could you please tell me how to solve it? Thank you June > p = summary(maxLik(fr,start=c(0,0,0,1,0,-25,-0.2))) Error in maxRoutine(fn = logLik, grad = grad, hess = hess, start = start, : NA in the initial gradient > p = summary(maxLik(fr,start=c(0,0,0,1,0,-25,-0.2),method="BFGS")) Error in optim(start, func, gr =

Hi All, I was wondering if I could get some comments on my approach to the design of the domain model and database for my rails app. I don''t have much experience in this so I am wondering if I am heading in the right direction. My app is an ecommerce site for my business which is a record label. That might seem straight forward, but the one thing that might be tricky is that

I can't install freebsd 6.0 STABLE amd64 on my notebook: HP Pavilion 2420la AMD Turion ML 32 , 1024 RAM, 80 GB HD, ATI Radeon XPRESS 200M. I try all modes , default, whitout acpi, safe mode. In all the cases after the next message the installation doesn't work: timecounters tick every 1000 msec Linux ELF exec handler install lo0.bpf attached I installed linux with parameter noapic

Does anyone know if there is a function available which can format any entered number as words? eg: ''1234'' would be ''One Thousand Two Hundred and Thirty Four'' In the past, I would have said this is a tall order, but from what I''ve seen with playing with rails for a short time, I don''t know what to expect. :) Thanks for any help, Damien

Suppose I know the value of cumulative bivariate standard normal distribution. How can I solve correlation between variables? Pekka --------------------------------- [[alternative HTML version deleted]]

Hi, R users, Can anyone tell me how I can change the size of points in my plot? For example: x <- c(1,3,6,9,12) y <- c(1.5,2,7,8,15) plot(x,y,pch=20) How do I reduce the size of those points? Thanks. Gary [[alternative HTML version deleted]]

How can I get a list of all model classes in the domain of a Rails application (all models, both in "app/models" and in components/somedir/model.rb)? Thanx in advance for your precious help! Edoardo "Dado" Marcora

after trying to mount my zfs pools in single user mode I got the following message for each: May 18 09:09:36 gw kernel: ZFS: WARNING: pool 'cache1' could not be loaded as it was last accessed by another system (host: gw.bb1.matik.com.br hostid: 0xbefb4a0f). See: http://www.sun.com/msg/ZFS-8000-EY any zpool cmd returned nothing else as not existing zfs, seems the zfs info on disks

Dear R users, I have two nonlinear equations, f1(x1,x2)=0 and f2(x1,x2)=0. I try to use optim command by minimize f1^2+f2^2 to find x1 and x2. I found the optimal solution changes when I change initial values. How to solve this? BTW, I also try to use grid searching. But I have no information on ranges of x1 and x2, respectively. Any suggestion to solve this question? Thanks, Kate

Hello, Is it possible to estimate prediction interval using GAM? I looked through ?gam, ?predict.gam etc and the mgcv.pdf Simon Wood. I found it can calculate confidence interval but not clear if I can get it to calculate prediction interval. I read "Inference for GAMs is difficult and somewhat contentious." in Kuhnert and Venable An Introduction to R, and wondering why and if that

Hello R users, I'd like to ask a question about how to add a new column. So, below is my situation. In order to perform the repeated ANOVA, I first imported the following table. score=read.csv("patients_tests.csv"); subject test1 test2 test3 test4 test5 test6 test7 1 ab 0.17687 0.16715 0.17009 0.16480 0.16116 0.24502 0.17975 2 cl

Hello everyone I am trying to fit an ordered probit/logit model for bank rating prediction. Besides polr() in MASS package which is not written especially for this as far as I know, do you know how else I can do this? I already found the modified polr () version on the Valentin STANESCU Enrst and Young Tel. 402 4000 ---------------------------------------------------------- The information

Hi guys, Am having a problem. I have this def in my index controller that works like this: def do_something $a = variable1 $b = variable2 $c = variable3 $d = ""<script language=\"Javascript\"> \n new Insertion.Bottom(''#{$c}'', ''#{$a} - #{$b}''); \n </script>" $trigger = "1" render(:partial =>

How do you call a javascript function to do something when the response is returned to the visitors browser? Easy ey? //Daniel -- Posted via http://www.ruby-forum.com/.

Hi, I want to plot a polynomial in the form like ax^2 + bxy + cy^2 + dx + ey + f =0 without solving it(since I may have 3 or 4 dimensional polynomial and it's really hard to solve). Is there any way to plot this kind of polynomial? Thanks a lot! -- View this message in context: http://www.nabble.com/Plot-2-d-Polynomial-without-solving-it-tp24331313p24331313.html Sent from the R help

...e: > 'ey has comment 'ii > Enter new passphrase (empty for no passphrase): > Enter same passphrase again: > Segmentation fault (core dumped) > [nkukard at wigglytuff .ssh]$ > > > That is the error i get when trying to change the passphrase on one of my > keys, i'm just wonder if its summin i did wrong, a bug or anything > else. Most important is there a way i can fix it? please try this patch Index: authfile.c =================================================================== RCS file: /home/markus/cvs/ssh/authfile.c,v retrieving revision 1.32...

Hi, I'm having some trouble with R code for one of my assignment questions on transforms. I've never used R for transformations so I'm not sure where to being. Our prof did give us some partial R code.par(mfrow=c(2,2)) plot(X[,2],e) plot(X[,3],e) plot(X[,4],e) plot(X[,5],e) Any help ?? 3. Try the following transformations on the response variable: (a) ? y = ey (b) ? y =