similar to: question about seq.dates from chron vs. as.POSIXct

Displaying 20 results from an estimated 6000 matches similar to: "question about seq.dates from chron vs. as.POSIXct"

2004 Jun 23
1
GARCH and forecasting
Dear R People: Is there a way to forecast with GARCH modeling as found in tseries, please? When I use the predict command, I get an output of length 100, regardless of what I put in the n.ahead steps. R Version 1.9.0 Thanks in advance. Sincerely, Laura mailto: lauraholt_983 at hotmail.com download! http://toolbar.msn.click-url.com/go/onm00200413ave/direct/01/
2004 Jul 01
2
[gently off topic] arima seasonal question
Hello R People: When using the arima function with the seasonal option, are the seasonal options only good for monthly and quarterly data, please? Also, I believe that weekly and daily data are not appropriate for seasonal parm estimation via arima. Is that correct, please? Thanks, Sincerely, Laura Holt mailto: lauraholt_983 at hotmail.com download!
2004 Aug 20
3
legends on the outside of the "box"
Hi R People: Here is a simple set of commands: >x1 <- 1:10 >x2 <- sqrt(x1) >plot(x1) >points(x2,col="red",pch=3) >legend(2,8,legend=c("First","Second"),col=c("black","red"),pch=c(1,3)) > Fine. Now, I would like to put the legend box on the outside of the plot itself, perhaps in the lower left hand corner. I've been
2004 Jun 22
2
question about window and inserting value
Hi again R People: I have the following time series: >x.ts Jan Feb Mar Apr May Jun Jul Aug Sep 2000 0.95 0.66 0.83 0.66 -1.45 -1.25 0.33 1.03 -0.48 2001 2.55 1.21 -1.10 -0.63 0.01 -2.20 -0.51 1.12 1.11 2002 -1.37 0.55 -0.63 -0.56 0.92 -1.73 0.59 0.77 0.30 2003 0.55 -0.01 -0.54 2.27 -1.29 -0.23 0.09 -0.50 -0.61 Oct Nov Dec 2000 0.84 -1.35
2005 May 03
4
Classes and methods
Hi R people: I would like to learn about classes, methods, S3 and S4. Which book would be the most helpful for this info, please: the green one or the white(and blue) one? Or is there something that would be even better, please? Thanks in advance. Sincerely, Laura Holt mailto: lauraholt_983 at hotmail.com R 2.1.0 Windows. trying to learn
2005 Jul 10
2
Off topic -2 Ln Lambda and Chi square
Dear R : Sorry for the off topic question, but does anyone know the reference for the -2 Ln Lambda following a Chi Square distribution, please? Possibly one of Bartlett's? Thanks in advance! Sincerely, Laura Holt mailto: lauraholt_983 at hotmail.com
2005 Feb 23
3
and [ESS] Starting ESS
Dear R People: I have finally seen the error of my ways and have decided to use ESS for R and S + stuff. However, I have a question right from the beginning. I'm somewhat confused by the installation instructions. Do I install XEMACS or ESS first, please? Windows XP R Version 2.0.1 (S + 6.2) Thanks so much! Sincerely, Laura Holt mailto: lauraholt_983 at hotmail.com
2004 Aug 19
2
ROracle and vector elements
Hi there! Is ROracle available for Windows, please? I found a download site, but it's really for UNIX/Linux. Here is a "thought question", please: Why do the vector elements start at location 1 rather than zero, as C does? Thanks in advance! R Version 1.9.1 Windows Sincerely, Laura Holt mailto: lauraholt_983 at hotmail.com
2004 Nov 16
2
changing character to a vector name
Dear R People: I would like to generate a vector/variable name from within a loop to be passed to a table function. This is what I have so far: >assign("p1",paste("raw3.df$",rw2$V1[3],sep="")) >p1 [1] "raw3.df$CITIZEN" > Essentially, I want to use the raw3.df$CITIZEN along with another value to generate a table. However, I'm stuck here. I
2004 Aug 11
2
str and Surv objects
Dear R People: I used the "Surv" function to produce the following object: >a <- Surv(1:4,2:5,c(0,1,1,0)) a [1] (1,2+] (2,3 ] (3,4 ] (4,5+] >str(a) Error in "[.Surv"(object, 1:ile) : subscript out of bounds > Why does str(a) give an error, please? Or did I do something wrong? Thanks in advance. R Version 1.9.1 Windows Sincerely, Laura Holt mailto: lauraholt_983
2005 Feb 28
1
number formatting
Dear R People: I have used the command round(x,3) to produce values with 3 places to the right of the decimal. Is there any command to remove the leading zero before the decimal point, please: that is, if I have 0.375, how do I produce just .375, please? Thanks in advance R 2.0.1 for Windows Sincerely, Laura Holt mailto: lauraholt_983 at hotmail.com
2004 Jun 11
2
question about Rcmd SHLIB
Dear R People: I'm trying to use the Rcmd SHLIB to produce a dll. Rcmd SHLIB -o test2.dll test2.f make[1]: *** [libR.a] Error 255 make: *** [libR] Error 2 Where do I go to find out about the "make" errors, please? I suspect that I might be missing something. I have the tools for creating new packages, but maybe I left out something. This is for R version 1.9.0 on Windows.
2004 Jun 21
2
question about latex command in Hmisc
Hi R People: I got the following error from using the "latex" command from Hmisc; >latex(bbm) 'latex' is not recognized as an internal or external command, operable program or batch file. Warning message: cmd execution failed with error code 1 in: shell(cmd, wait = TRUE, intern = output) > I was printing a matrix to a Latex File. This worked fine in Version 1.8. This
2004 Nov 16
3
Changing zeros to NAs in a data frame
Dear R People: I have a data frame with some columns that are numeric and some which are factors. There are zeros in the numeric columns and I would like to change them to NAs. However, there are zeros in some of the factor columns, and I would like them to be left alone. Is there a "global" way to do this, please? I was thinking about use the results from "str" but am
2004 Jul 14
1
subsets in data frame
Hello R People: I have a data frame with 2 numeric variables and 1 factor. There are 3 levels of the factor. I would like to get sums/means/etc of the numeric variables with respect to the factor level. I tried "table" and "subset" but have not hit upon a solution. I thought maybe "apply" would be the answer but can't figure out how to break out by factor.
2004 Oct 11
1
Puzzled on nlm
Dear R People: Here is a function to minimized: >mfun1 function(x,a) { x[1] <- a[1]*x[2] + a[3] - a[2]*(a[1]-a[2])*a[3] x[2] <- a[1]*x[1] - a[2]*a[3] return(x) } Here is my first try: >nlm(mfun1,c(1,1)) Error in f(x, ...) : Argument "a" is missing, with no default > >nlm(mfun1,c(1,1),a=c(0.8,0.5,1)) Error in nlm(mfun1, c(1, 1), a = c(0.8, 0.5, 1)) :
2005 Apr 27
2
Question about R initial message
Dear R: First of all, nothing is wrong! I just had a question about the following" "Natural language support but running in an English locale" What does than mean, please? Thanks in Advance R 2.1.0 Windows Laura Holt mailto: lauraholt_983 at hotmail.com
2004 May 30
2
zipping a new package
Dear R People: I have finally created a little R package. Do I need to do anything special to create a zip file for that package, or just use Winzip, please? thanks so much R Windows Version 1.9.0 Thanks, Laura mailto: lauraholt_983 at hotmail.com
2004 Jun 28
1
plotting with an its object
Dear R People: I have an its object. The original its is the Dow Jones Industrial average from March 23, 1990 to March 23, 2000. I did the following; dj1 = original series >dj2 <- log(dj1) >ddj2 <- diff(dj2) > Ok so far. Now I would like to plot this series with a certain y limit: >min(ddj2) [1] -0.07454905 >max(ddj2) [1] 0.04860535 >plot(ddj2,ylim=c(-0.1,0.1)) Error
2005 Apr 06
1
read.table with header and text data
Hi R! I am reading in a text file which has one column of alpha data and 5 columns of numeric data. There is a header row. I would like the alpha data column to just be character rather than factor. Is there a way to do this, please? I'm thinking that it might be I() but can't figure out exactly how. Thanks, Laura mailto: lauraholt_983 at hotmail.com R 2.0.1 Windows