similar to: Using the digest and t distribution.

Displaying 20 results from an estimated 300 matches similar to: "Using the digest and t distribution."

2008 Sep 22
1
Help for SUR model
I am an R beginner and trying to run a SUR model in R framework. subset(esasp500, Obs <=449 & Obs>=197, select = -Date) ->ev13sub c(Obs>=397) & c(Obs<=399) ->d13 c(Obs>=400) & c(Obs<=449) ->f13 SP500*f13 ->SP500f13 BBC~SP500+d13+SP500f13 ->sur132 BOW~SP500+d13+SP500f13 ->sur133 CSK~SP500+d13+SP500f13 ->sur134
2007 Nov 09
1
Problem reading data in Rmetrics
Hi folks - After upgrading to the latest version of Rmetrics, I can't read in data like I used to. Is anyone seeing the following? It seems to truncate the dates after I use "as.timeSeries". -John SP500<-read.table("SP500.csv",header=TRUE,sep=",") > head(SP500) Date Open High Low Close Volume 1 08/04/06 1280.26 1292.92
2008 Jan 24
1
Error using Rmetrics to read data
Hi folks. This set of code used to work, but after upgrading to the latest version of Rmetrics it no longer does. Any ideas? SP500<-read.table("SP500.csv",header=TRUE,sep=",") > head(SP500) Date Open High Low Close Volume Close2 1 8/4/2006 1280.26 1292.92 1273.82 1279.40 2530970112 1279.40 2 8/3/2006 1278.22 1283.96 1271.25 1280.27
2017 Aug 07
1
tidyquant error downloading symbols for Index
Hi R Helpers, I recently tried to take advantage of the ability to download all the tickers in the S&P 500 using the functionality of tidyquant, but it threw an error. For summary, the set of commands that I ran was library(tidyquant) tq_index_options() tq_index("SP500") sessionInfo() R feedback including error message and sessionInfo are provided below. Guidance would be
2011 Feb 19
4
Accessing DF index
I have a dataframe called x2. It seems to have a date column but I can't access it or give it a name or convert it to a date. How do I refer to that first column and make it a date ? When I try x2[1,] I get the second column. head(x2) FAIRX SP500 delta 2000-08-31 0.010101096 0.007426964 0.002674132 2000-09-29 0.096679730 -0.054966292 0.151646023 2000-10-31
2006 Nov 22
2
problems with garchFit
Hi all, I post it on both r-help and r-finance since I don't know where is most appropriate for this topic. Sorry if it bothers you. I did garch fitting on S&P500 monthly returns with garchFit from fSeries. I got same coefficients from all cond.dist except normal. I thought that is probabaly usual for the data. But when I play with it, I got another question. I plot skew normal with
2008 Jun 19
1
How can I shade the background area of a zoo time series object between specific dates?
Dear list members, How can I shade the background area of a zoo time series object between specific dates? eg. library(tseries) library(zoo) SP500<-get.hist.quote("^GSPC", start = "1990-01-01", quote = "Close") plot(SP500) How can I produce the same plot but with a (say) red background between 2007-04-12 and 2008-05-14 ?
2012 Aug 05
1
R: Help xts object Subset Date by Day of the Week
I have a xts object made of daily closing prices I have acquired using quantmod. Here is my code: library(xts) library(quantmod) library(lubridate) # Gets SPY data getSymbols("SPY") # Subset Prices to just closing price SP500 <- Cl(SPY) # Show day of the week for each date using 2-6 for monday-friday SP500wd <- wday(SP500) # Add Price and days of week together
2007 Jul 12
2
how to get the p-values from an lm function ?
Hi, dear R-users, I am computing a liner regression by rating category using the 'by' function as stated below: tmp <- by(projet, rating, function(x) lm(defaults ~ CGDP+CSAVE+SP500, data = x)) I would like to get not only the coefficients but also their p-values. I can't find the command in the help pages to get them. Does anyone have a suggestion ? Thank you, Benoit.
2009 Nov 20
2
Problem at adding lines on a graphics with lines() function
Hello, I am trying to plot a graphic with many lines with the following command: plot(datas[1:n,1],datas[1:n,2],type="l",main="SP500 Prices and Moving Averages",xlab="Date",ylab="Prices",col="black") lines(datas[1:n,1],datas[1:n,3],type="l",col="green",lty="solid") But I just see the first curve. I have tried it on
2012 Dec 06
1
Fuction Error
I'm calling a list of symbols and then using a function to build a data frame from that symbol list. It works great until I introduce this index symbol from yahoo '^GSPC'. When and index symbol is introduced I get and error which is below. > Data <- symbolFrame(symbols) Error in get(S) : object '^GSPC' not found Since R does not like the ^ in front of a name it
2008 Sep 11
1
how to calcaulate matrices for two subsets
I am an R beginner and trying to run a market model using event study in R framework. First, I run a market model, that is lm(stock security~SP500 index, subset=Obs[197, 396]) ->result1 Then I get predict results for a new dataset using predict (result1, newdata=Obs[397,399]) ->pred1 Pred1 should have three numbers. Now I need to calculate abnormal return by the formula stock
2007 Nov 24
5
how to calculate the return?
Hi, R-users, data is a matrix like this AMR BS GE HR MO UK SP500 1974 -0.3505 -0.1154 -0.4246 -0.2107 -0.0758 0.2331 -0.2647 1975 0.7083 0.2472 0.3719 0.2227 0.0213 0.3569 0.3720 1976 0.7329 0.3665 0.2550 0.5815 0.1276 0.0781 0.2384 1977 -0.2034 -0.4271 -0.0490 -0.0938 0.0712 -0.2721 -0.0718 1978 0.1663 -0.0452 -0.0573 0.2751 0.1372 -0.1346
2013 Jan 08
3
Conditional Statistics
Hello, I am a new user of R. I am coming from SAS and do statistics on stock market data, economic data, and social data. My question is this: How can you get the mean, standard dev, etc. of a variable based on a conditional statement on either the same variable or a different variable in the same data set? So if I had the closing prices of the S&P from 01/01/1990-12/31/1990, how could I get
2006 Jun 23
3
Problems with weekday extraction from zoo objects
Hi Folks! I'm struggling with dates - but enough about my personal life..... I have two daily time series files. In one (x) the date format is Y/m/d and the other (y) is d/m/y. I used read.zoo on both and they read into R with no problem. Then I use: weekdays(as.Date(x$DATE)) and get what I expect - all the days of the week in my data set. When I use:
2006 Nov 22
0
questions about garchFit
Hi all, I was trying garchFIt() of fSeries to fit volatility of monthly log returns of S&P500. I tried residuals of normal, student t, skew normal, skew t. But all innovations except normal got exaxtly same coefficients, even if I changed their parameters of skew and shape. Is this correct for the data or something wrong? I am attaching the code, thank you. Muster #GARCH analysis of
2012 Aug 01
1
Time Series Have Date Show Days of the Week
I used quantmod to pull in price data from the ticker SPY. The data has date and closing price. I would like to show the day of the week for each closing price. Is that possible? Also, I would like to add the back into the data frame in a new column without changing the structure of the data set if possible. SPY 2009-01-02 92.96 2009-01-05 92.85 2009-01-06 93.47
2007 Sep 01
1
Problem in downloading Yahoo Finance data from R
Hi R users, I have a problem in downloading Yahoo Finance data from R. I have tried an example given in R, to download. The error is given below: >library(fCalendar) > yahooImport("s=IBM&a=11&b=1&c=1999&d=0&q=31&f=2000&z=IBM&x=.csv ", file = "D:\\ Downlaod",source = "http://ichart.yahoo.com/table.csv?", save = FALSE,
2011 Aug 25
1
How download Yahoo Quote?
Hello all: Friend told me that we can download the stock historical quote from Yahoo site by R! Could you tell me that is true or not, how to do that? Thanks! -- View this message in context: http://r.789695.n4.nabble.com/How-download-Yahoo-Quote-tp3769563p3769563.html Sent from the R help mailing list archive at Nabble.com.
2008 Apr 11
0
aggregateSeries and seriesData in R?
hi to all! (Q1): I'd like to ask where can i find aggregateSeries and seriesData in R packages? (Q2): how can i perform these Splus commads in R? e.g. annualMax.sp500 = aggregateSeries(-spto87,by="years",FUN=max) hist(seriesData(annualMax.sp500)) (Q3): is the method of probability-weighted moments available in evir package? Thanks! Filame