similar to: handle large matrix in R

I noticed that nls treats weights as relative and that the absolute size of the weights w in the following script has therefore no influence on the errors of the parameters reported in the summary a<-1 b<-3 x<--100:100 y<-a*x+b yeps<-y+rnorm(length(x),sd=1) w<-rep(1,length(x)) plot(x,yeps) lines(x,y) fit<-nls(yeps~p1*x+p2,start=list(p1=a*1.5,p2=b*1.5),weights=w)

Hi all, Lets say I have a matrix A which is m x n. I also have a mask matrix MASK which is m x n with values in T/F, where T values make a sub-matrix in regutangular shape... I applied B=A[MASK] and it didn't work as expected... Any thoughts? [[alternative HTML version deleted]]

Hello, (Sorry for the repost, i am resending in plain text) I have a function 'ewrap' (see below for definition). It takes 3 expressions and returns another expression e.g. map <- ewrap({ len <- length(r$addon) rhcollect(len,1) }) becomes: expression({ NULL result <- mapply(function(.index, k, r) { { len <- length(r$addon)

hello I want a code which can correct the spelling mistakes as well as grammatical mistakes in the sentences...that is if I am writing following sentence: I want too meet my frnd bt due to hectic shcedule I cant I want output in following way: I want to met my friend but due to hectic schedule I can't. Thanks in advance Shilpa Rai MSc IIT Bomaby -- View this message in context:

Hi, here i have some code... a <-1 b <- b+1 c <- b+a/20 if c >5 { d<- 1 } else { d<- 0 } i want to repeat this code from the 2nd line [b <- b+1] without using loop. Actulay i want to use "*Label *" and call *GoTo* method like in other coding Languages. For eg:- like this, a <-1 *LabelBegin :* b <-

I have photographs of plots that look like so: http://r.789695.n4.nabble.com/file/n4631960/Untitled.jpg I need to divide it up so each circle has an equal area surrounding it. So into 20 equal segments, each of which contains a circle. Quadratcount is not sufficient because if I divide it up into 36 equal quadrats, some quadrats do not contain one of the circles. I'm not even sure how to

Dear R Users: I'm a STATA user converting to R, and I'd like to be to do the following. #Assign var_1 and var_2 a value 10->var1 20->var2 #Now I'd like to print the values of var_1 and var_2 by looping through var_1 and var_2 in such a manner: while(y<3){ print(var_y) y+1->y } In STATA, the "y" appended to " var_" is called the local variable and

Dear All, I have been searching online for help increasing my R code more efficiently for almost a whole day, however, there is no solution to my case. So if anyone could give any clue to solve my problem, I would be very appreciate for you help. Thanks in advance. Here is my issue: My desktop is with i7-950 Quad-core CPU with 24Gb memory, and a NVIDIA GTX 480 graphic card, and I am using a

Hello, Is there a convenient way to import RDF/OWL data into R? I'm interested in importing BioPAX/SBPAX data into R to make them available for a wider audience. One exciting application would be to use pathway data to explain differential microarray measurements by identifying upstream nodes that are likely involved in causing the differences. This could also be used to validate

Upgrade clang? I can't reproduce it with trunk. On 4 June 2015 at 14:48, Hui Zhang <wayne.huizhang at gmail.com> wrote: > Yes, I found this link, but what's the solution?? > > On Thu, Jun 4, 2015 at 1:09 PM, Rafael Espíndola > <rafael.espindola at gmail.com> wrote: >> >> I think this is https://llvm.org/bugs/show_bug.cgi?id=16846 >> >> On

> On Nov 3, 2015, at 5:00 PM, Hui Zhang <wayne.huizhang at gmail.com> wrote: > > Hello, > > I found a weird thing in llvm 3.3: > > For exactly the same MDNode *space, if I cast it to DILocation loc(space) and call loc.getFileName(), or I cast it to DIScope sco(space) and call sco.getFilename(), the return value would be different ! Totally two different files

Hi, I wonder if the function "density" outputs the gaussian mixture formula that is estimated from the input data, assuming a gaussian model is used at each data point ? I want to take the derivative of the finally estimated gaussian mixture formula for further analysis. Thanks in advance for any help that you can offer me! Hui

Dear All, This question sounds very simple but I don't know where I am wrong. I just want to pad leading zeros in some string, for example, "123" becomes "00123". What is wrong if I do following? > sprintf("%05s", "123") [1] " 123" It didn't return "00123", instead it padded with 'blank'. Thank you for your help

Dear all, Can anybody give me some hint on the following error msg I got with using randomForest? I have two-class classification problem. The data file "sample" is: ---------------------------------------------------------- udomain.edu udomain.hcs hpclass 1 1.0000 1 not 2 NA 2 not 3 NA 0.8 not 4 NA 0.2 hp 5 NA 0.9 hp ------------------------------------------------------------ The

Hi, I was using a density estimation function as follows: > est <- KernSmooth::bkde(x3, bandwidth=10) When setting bandwidth less than 5, I got the error "longer object length, is not a multiple of shorter object length in: kappa * gcounts ". I wonder if there is anybody who can explain the error for me? Thanks! Hui

Hello, I don't know if anyone gets familiar with the llvm Chapel front end, it's version 3.3 and comes within Chapel source package. I'm trying to parse the .bc code generated from a simple helloworld chapel program. Just run a basic Hello pass on the code (default one in the llvm source code) that prints out all the function names in the module. However, it prints a bunch of

Hi All, I have two Rs, one has been installed in Windows system and another one has been installed under UNIX system. Is there any environmental variable or function to tell me which R I am using? The reason that I need to know it is under different system, the data path could be different. I want to do something like if it is R under Windows path =

I think this is https://llvm.org/bugs/show_bug.cgi?id=16846 On Jun 4, 2015 12:04 PM, "Hui Zhang" <wayne.huizhang at gmail.com> wrote: > Is there any clue for this error ? > > Thanks > > On Tue, Jun 2, 2015 at 5:47 PM, Hui Zhang <wayne.huizhang at gmail.com> > wrote: > >> Hello, >> >> I'm having this error and couldn't find a

Hello, For some reason, I have to stick on llvm 3.3 for a language compiler, I find that the location debug info is attached to each instruction using !dbg, however, I found some of that information is mis-attched and need to be changed, so I want to *know what functions(I checked all funcs in DIBuilder.h but didn't find a appropriate one) are used to attach those !dbg nodes to each

Hello, I found some source code using llvm 2.5 that has a call to Module::getTypeName(Type*), which I can't find it anymore in llvm newer than 3.3, so how can I get the name of a type(e.g a user-defined structure) if we have Type* of that ? Besides, I checked that old llvm maintains a TypeSymbolTable that enabled type name look-up, so what's the replacement and mechanism of it in the