similar to: How to make array of regression objects

Hello I'm a new in R I have a large data.frame "s" (this is actualy just a table in mysql) : > names(s) [1] "symbols", "day", "value" I need to convert it to simple matrix. I have define this matrix like this: > data.matrix <- matrix(nrow=nDays, ncol=nSymbols, dimnames=list(days, symbols)) then i just copy values to the matrix using for()

Hello all. I'm using Fedora 14. I have patched my wine yesterday using yum, ane my wine current version is: 1.3.18-1.fc14. After that, some of my programs stop to working. It seems, what something happen with MDAC component, because program can't open mdb file and can not found MDAC component from the console. The errors. what i get: err:ole:CoGetClassObject class

Hello I have a quick question. I need to compute matrix in R, like A <- t(X) %*% solve(V) %*% X, where X is a vector and V is a matrix This code works, but now i want to optimize it. I have try: A <- crossprod(X, solve(V)) %*% X Is there another, better way? WBR Dima [[alternative HTML version deleted]]

Hello. I have a quick question. I try to use logit regression, to work out probabilities in the sport event. I have work out probabilities for group of 2 players: p1 - probability, what player1 will beat player2 p2 - probability, what player2 will beat player1 pt - tie probability, p1 <- 1 - p1 - p2; Now i want to work out probabilities for group of 3 players, like: pg1 - probability, what

Hi, Here i have a data frame like this, frame name is "dat" *NAME AGE ELIGIBLE* A 20 B 14 C 35 D 10 E 50 In this, i want to change the column '*ELIGIBLE*' status to '*YES*' If, AGE between 18 to 35 Which means that, i should get a put like

Dear R-users, I have written the following code to generate some trellis plots. It works perfectly fine except that it is quite slow when it is apply to my typical datasets (over several thousands of lines). I believe the problem comes from the loops I am using to subset my data.frame. I read in the archives that the tapply function is often more efficient than a loop in R. Unfortunately ,

Hi, May be you can try this: obj_name<- load("arun.RData") Pred1<- get(obj_name[1]) Actual1<- get(obj_name[2]) library(reshape2) dat<-cbind(melt(Pred1,id.vars="S1"),value2=melt(Actual1,id.vars="S1")[,3])? # to reshape to long form colnames(dat)[3:4]<- c("Predict","Actual") dat$variable<- as.character(dat$variable) #not that

Hello All, A simple question. I get some return from the R in my C++ program (via Rcpp package). The result come, as SEXP and it should be a simple numeric variable. How to convert it to double? The code, what i use: stringstream ss; ss << "p <- predict(fit_ar11, n.ahead = 2, doplot=FALSE);" << "p$pred[1]"; SEXP ans; int iRet =

I am running the following nls equation. I tried it with data that excel was fitting and got the error: singular gradient matrix at initial parameter estimates I thought it was due to a low number of points (6), but when I create a dataset, I get the same problem. If I remove the parameter "a," then it can find a solution. Does anyone know what I can do to fit this model?

Hi all! I would like to import a matlab or gauss code to R. Could you help me? Bye, Sebasti?n. 2007/6/23, r-help-request en stat.math.ethz.ch <r-help-request en stat.math.ethz.ch>: > Send R-help mailing list submissions to > r-help en stat.math.ethz.ch > > To subscribe or unsubscribe via the World Wide Web, visit >

Ira, obj_name<- load("arun.RData") Pred1<- get(obj_name[1]) Actual1<- get(obj_name[2]) dat2<- data.frame(S1=rep(Pred1[,1],ncol(Pred1)-1),variable=rep(colnames(Pred1)[-1],each=nrow(Pred1)),Predict=unlist(Pred1[,-1],use.names=FALSE),Actual=unlist(Actual1[,-1],use.names=FALSE),stringsAsFactors=FALSE) dat2New<- dat2[!(is.na(dat2$Predict)|is.na(dat2$Actual)),] ?dat3<-

I am trying to push some view logic into a helper. The thought is that this is a step towards having the business logic in the helper rather than the view. However, I''m essentially wrapping the checks around an eventual call to date_select(). The problem I''m having is that the application complains that it doesn''t know about date_select(). I''m sure (or

Hello, Rather new to RoR, so I''m not sure about the terminology and such :-/ . My question is: how could I know the model which is associated to a controller? For example: - controller class is TestController, which is a subclass of ApplicationController - associated model class is Test How could I write some code in a method of ApplicationController to dermine the current

Dear all, I have a problem with the command 'getURL' from the RCurl package, which I have been using to obtain a ftp directory list from the MOD16 (ET, DSI) products, and then to download them. (part of the script by Tomislav Hengl, spatial-analyst). Instead of the list of files (from ftp), I am getting the complete html code. Anyone knows why this might happen? This are the steps i

On Mar 23, 2012, at 4:46 PM, Bill Wendling wrote: > You need to look at how the equivalent code in C++ looks in LLVM IR. The "do something with x & y" part will be an 'invoke' that lands on at landing pad, where you will then call the d'tor to your allocated object. OK, after a lot of tinkering (and looking at the ExceptionDemo.cpp file), I have something that works

On Mar 23, 2012, at 4:29 PM, Paul J. Lucas wrote: > On Mar 23, 2012, at 3:25 PM, Bill Wendling wrote: > >> Let's take your example. You will have code that looks like this: >> >> extern "C" void thunk_item_M_delete( void *v_that ) { >> item *that = 0; >> try { >> that = static_cast<item*>( v_that ); >>

hi, I would like to find the x value (independent variable) for a certain dependent value using the fitted model with nls. with (predict) I can find y that corresponds to a list of x. I need the other way around. can it be done? thanks, afadda

This enables the ability to take the ovirt-node-image iso and deploy it to an iscsi disk. It also provides a sample pxe configuration for booting based on the iscsi root device. Includes support for user/password as well as reverse chap user/password. --- Makefile.am | 1 + livecd-iso-to-iscsi | 201 ++++++++++++++++++++++++++++++++++++++++++++++ ovirt-node-image.spec.in |

Using latest git if you try to set an option to the value it already has you get an error like 'dbus_bindings.DBusException: Method "set" with signature "s" on interface "org.freedesktop.compiz" doesn't exist' and setting it to a new value actually changes the setting but dbus times out waiting for a reply saying so. Setting a list gives the method

Dear all, I have tried to modify the code of MASS:::stepAIC.default(), dropterm() and addterm() to use AICc instead of AIC for model selection. The code is appended below. Somehow the calculations are still not correct and I would be grateful if anyone could have a look at what might be wrong with this code... Here is a working example: ## require(nlme) model1=lme(distance ~ age + Sex, data =