similar to: how to subset unique factor combinations from a data frame.

Hi everyone I am trying to estimate the optimal hedge variance ratio for cross hedging two commodities. the price levels are used (compared to price change and % price change) and used the OLS with dummy variable for estimating the co-efficients. the equation looks like this Y = B + B1*D1 + B2*X + B3*(X*D1) Where Y = Daily Cash market price D1 = Dummy variable taking value 1 for period Oct-Mar

Hi R-users Can the users let me know how to do MGARCH estimate (Bivariate GARCH) and volatility forecast for 2 variables in R. thanks and regards snvk

Dear R-help members. I am an 'R-learner' (about 6 hours so far) using the lattice library to create a ranked dotplot and am colour coding the dots by a variable called "Commodity". However when i use autokey to make a legend the size (cex) and symbol (pch) do not match what is on the dotplot. Code is below and image attached library("lattice") Cal_dat <-

Hi, since nobody answered to my first message, I try to explain my problem more clearly and more general this time: I have a data set in my R package "micEcon", which has many variables (82). Therefore, I would like to avoid to describe all variables in the "\format" section of the documentation (.Rd file). However, doing this lets "R CMD check" complain about

Hi All, I am trying to install JGR GUI for R (windows xp) but facing the problem. The following error message is displayed when I click on JGR.exe "Cannot find Java/R Interface (JRI) library (jri.dll) Please make sure you start JGR by double clicking the JGR.exe program" I know this is R help forum, but trying to get help from experts who are using JGR. Any help or idea will be

Hi all i am facing a peculiar problem for data input using read.table which i never faced previously. i have a data file by name abnew.txt with two coloumns data as depicted below. A B 420 422 314 321 the txt file is created using the excel save as option. i issued the statement as > a <- read.table("abnew.txt", header=TRUE) > a X.??S 1 NA 2 2 3 2

Hi, I am new to R and trying to migrate from SAS. I am trying to use sqldf to create a new table from existed table and change some of the columns. I have table called DataOld with columns commodity, rate and total and I am trying to create new table called DataNew with columns commodity, ratenew and totalNew. > sqldf("create table datanew as select commodity, ratenew as rate * 10, >

Dear R helpers I would like to be able to colour code the y-axis labels on a complex dot plot by a variable known as company (of which there are only two). The code is below and data attached. Thanks MarkM library("lattice") library(latticeExtra) # for mergedTrellisLegendGrob() # set size of the window windows(height=10, width=7,rescale=c("fixed")) ##read the data to a

Dear R-help group, I have a dataset with daily closing prices from a stock exchange (consecutive 5 trading days) from a firm trading a specific commodity. The date variable looks like: quote_date 20080411 With the format; yyyymmdd. Moreover, I have another data set with a (average) weekly price of the underlying commodity. The date variables in this dataset are only year and a week number. I

From: Bruno Delbono <bruno.s.delbono at mail.ac> > I'm really sorry to start this thread again but I found something very > interesting I thought everyone should ^at least^ have a look at: > http://uadmin.blogspot.com/2005/06/4-dual-xeon-vs-e4500.html > This article takes into account a comparision of 4 dual xeon vs. e4500. > The author (not me!) talks about "A

Dear R help(ers). I'm an R-learner (about 10 hours now) trying to make a ranked dot plot where the symbols are coded by two variables concurrently. I'm trying to use Deepanyan Sarkar's book 'Lattice' as a guide but get the feeling it is a bit advanced for my level of understanding. I have three questions Q1. Right now I like to know how to get the dual coding working

On Tue, Feb 3, 2015 at 1:01 PM, Valeri Galtsev <galtsev at kicp.uchicago.edu> wrote: > >> >> Yes, computers and the way people access them are pretty much a >> commodity now. If you are spending time building something exotic for >> a common purpose, isn't that a waste? > > Do I have to take that people who are not sysadmins themselves just hate > an

Hi I want to pursue a project based to improve the existing KCoFI method which is the Control Flow integrity method for commodity os. Since KCoFI is a llvm based project I plan to undertake the project to improve the existing KCoFI method. Following are the improvements that I want to pursue: 1. To improve the call graph used in KCoFI. Implement a stronger call graph. 2. Port the KCoFI to

Dear R help group I've been working on this plot for a while now and now getting around to the minor adjusments. I would like to be able to put a border and background fill around the legend in this plot. I understand the legend 'bty' should do this have this capablity but not sure how the syntax works in this case ###### initalise library("lattice")

On Tue, Feb 3, 2015 at 12:24 PM, Valeri Galtsev <galtsev at kicp.uchicago.edu> wrote: > > Sounds so I almost have to feel shame for securing my boxes no matter what > job vendor did ;-) Yes, computers and the way people access them are pretty much a commodity now. If you are spending time building something exotic for a common purpose, isn't that a waste? > Just a simple

GlusterFs always strikes me as being "the solution" (one day...). It's had a lot of growing pains, but there have been a few on the list had success using it already. Given some time has gone by since I last asked - has anyone got any more recent experience with it and how has it worked out with particular emphasis on Dovecot maildir storage? How has version 3 worked out for

I received a private request for my complete dataset from my previous questions. In gratitude to the developers of R, and especially to the helpful members of r-help, I'm happy to attach it. Anyone is free to use this dataset in any manner they wish, including published books. Attribution is not required, or even desired. Explanatory notes on dataset: This data is collected from monthly

Dear all R users, Suppose I have a VECTOR of time series y[t] consists of 2000 data point. For example suppose I have data frame which has two columns. First column represents a time series of exchange rate for 2000 days. And the second column represents the price of a commodity for the same period. Now I want to fit a OLS regression like that, y[t] = a + b*delta[y[t-1]] + c*delta[y[t-2]] +

Dear R helpers I would like to move the x-axis labels, which plot automatically at the base of a dot plot to the top of the plot. Is there a way to do this? Code snippet below with(Cal_dat, dotplot(reorder(paste(Mine,Company), Resc_Gt) ~ Resc_Gt, fill_var = Commodity, pch_var = factor(Year), xlab_var = factor(Company), pch = c(21, 22, 23),

Hello, I am struggling for some time now to estimate AR(1) process for commodity price time series. I did it in STATA but cannot get a result in R. The equation I want to estimate is: p(t)=a+b*p(t-1)+error Using STATA I get 0.92 for a, and 0.73 for b. Code that I use in R is: p<-matrix(data$p) # price at time t lp<-cbind(1,data$lp) # price at time t-1