similar to: testing power of correlation

Dear List, how can I obtain the value of r suqared for a non-linear model? For linear models it can be found in the summary() of the model but for non-linear models I just don't know. Please help! Anna

Dear list, I'm trying to fit a chapman-richards equation to my data, only I cannot interpret the parameters a, b and d. I know that the parameter b denotes the asymptote, but for the others I couldn't figure out. But I do need to know this in order to set my starting values. Here's the model: modPoplar<- nls(Diameter ~ d*(1-exp(-b *Age))^a ,start=list(a=20,b=0.9,d=33)) I attached

Dear list, I'm trying to fit a chapman-richards equation to my data, only I cannot interpret the parameters a, b and d. I know that the parameter b denotes the asymptote, but for the others I couldn't figure out. But I do need to know this in order to set my starting values. Here's the model: modPoplar<- nls(Diameter ~ d*(1-exp(-b *Age))^a ,start=list(a=20,b=0.9,d=33)) I attached

Hey List, I did a multiple regression and my final model looks as follows: model9<-lm(calP ~ nsP + I(st^2) + distPr + I(distPr^2)) Now I tried to predict the values for calP from this model using the following function: xv<-seq(0,89,by=1) yv<-predict(model9,list(distPr=xv,st=xv,nsP=xv)) The predicted values are however strange. Now I do not know weather just the model does not fit

I'm seeing a lot of activity over the last two days with what looks to be a kiddie script. Mostly trying to access several of our servers with the username anna. All failed... in fact I don't think we have a user anna on any of our servers. Meanwhile... I'm running Sendmail. This pertains to Centos 4 and 5 servers. I'm also running fail2ban on some and Ossec on others. So far,

Hi All, I was wondering if anyone knew of a function which would generate data from a pre-specified correlation matrix (as in the Stata command r2corr) or sampled from a population with a specific covariance/correlation. (I thought I'd check before I wrote something inelegant and slow.) Jeremy -- Jeremy Miles Psychology Research Methods Wiki: www.researchmethodsinpsychology.com

On 2/25/20 9:13 PM, Jason Wang wrote: > > On 2020/2/26 ??12:51, Suman Anna wrote: >> Hi Jason, >> >> On 2/24/20 11:39 PM, Jason Wang wrote: >>> On 2020/2/25 ??5:26, Suman Anna wrote: >>>> The functions vring_new_virtqueue() and __vring_new_virtqueue() are >>>> used >>>> with split rings, and any allocations within these

Dear all, I'm trying to rearrange variables in a table in a custum order for using it with levelplot. So far I could only find examples showing how to sort alphabetically. Here is a short example:? a <- c("Anna","Anna","Michael","Klaus","Klaus","Anna","Fritz")? b <-

> On Jul 1, 2016, at 12:10 PM, Dmitry Vyukov <dvyukov at google.com> wrote: > > On Fri, Jul 1, 2016 at 8:53 PM, Anna Zaks <ganna at apple.com> wrote: >> Hi Sanitizer Runtime Developers, >> >> We recently ran into a problem building clang because some of the >> definitions in sanitizer_common conflicted with system definitions and later >>

Hi, If a matrix is not positive definite, make.positive.definite() function in corpcor library finds the nearest positive definite matrix by the method proposed by Higham (1988). However, when I deal with correlation matrices whose diagonals have to be 1 by definition, how do I do it? The above-mentioned function seem to mess up the diagonal entries. [I haven't seen this complication, but

I didn't explain myself well. You are right about not needing a list on the right hand side of the equation below. What I end up with is a list of arrays. Now what i would like to do is to access the individual elements in the arrays in the list. For example, when I type, y[[1]], I just get the whole first array. How do I get the first element in the first array for instance? Is

Hi there! In my case, cor(d[1:20]) makes me a good correlation matrix. Now I'd like to have it one sided, means only the left bottom side to be printed (the others are the same) and I'd like to have * where the p-value is lower than 0.05 and ** lower than 0.01. How can I do this? And another thing: Is there a way to output that table as a latex table? Thanks, Martin -- Ihr

Hi, I have a data set with two continous variables that I want to plot MEANS (I am not intrerested in median values) on a double-y graph. I also have 2 factors. I want the factor combinations plotted in different panes. Dummy dataset: mydata <- data.frame(factor1 = factor(rep(LETTERS[1:3], each = 40)), factor2 = factor(rep(c(1:4), each = 10)), y1 =

Hi all I have produced a biplot for a PCA (see attached pdf) that I ran however the names of the variables which are placed at the end of the arrows overlap and are thus unreadable. Similarly some of the numbered points overlap. I was wondering if there was a way to edit the biplot to move the label names and if not what the best alternative is. Thanks Anna pca<-biodata[,3:10]

On the cover of Zivot and Wang's Modeling Financial Time Series with S Plus, there is a correlation plot that seems to indicate the strength of correlation with color-coded squares, so that more highly correlated stocks appear darker red. If anybody out there is familiar with the book or understands what I am talking about, I am curious as to whether or not there is a similar function in R

On Wed, Sep 16, 2015 at 07:29:17PM -0500, Suman Anna wrote: > The virtio core uses a static ida named virtio_index_ida for > assigning index numbers to virtio devices during registration. > The ida core may allocate some internal idr cache layers and > an ida bitmap upon any ida allocation, and all these layers are > truely freed only upon the ida destruction. The virtio_index_ida

On Wed, Sep 16, 2015 at 07:29:17PM -0500, Suman Anna wrote: > The virtio core uses a static ida named virtio_index_ida for > assigning index numbers to virtio devices during registration. > The ida core may allocate some internal idr cache layers and > an ida bitmap upon any ida allocation, and all these layers are > truely freed only upon the ida destruction. The virtio_index_ida

On 08/27/15 07:11, Gary Stainburn wrote:> Bad news Guys, they've just moved the emails to somewhere else and have > started again: <> > From: Caylian Curtis <caylian at enjoylovef**k.com> <> not true. she has been at that site for a while. i received 1st email from her and Julie Anna just after i posted to this thread. i will say emailing Julie Anna was more fun

Hi, I'm having trouble running 'lars'. When I install it I get the following warning: >install.packages('lars') Warning in install.packages("lars") : argument 'lib' is missing: using 'C:\Users\Anna\Documents/R/win-library/2.10' --- Please select a CRAN mirror for use in this session --- trying URL

Hello, Samba 3.0.2a, Debian linux, 2.6.x kernel, PDC server, WinXP clients. When I try to log in on a XP client I get this message: "A device attached to the system is not functioning" I have tried google'ing for the error, but to no avail. I have earlier created a user (anna), which can successfully log in from my laptop. When I try to log in with anna on my workstation, I