search for: rwatkins

Displaying 9 results from an estimated 9 matches for "rwatkins".

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2003 May 16
4
Newbie hung up with matrices
Hi all: Thanks in advance for your assistance. I just started learning R. I'm trying to use the Help and the downloadable manuals. I am stuck on trying to multiply matrices. Can anyone please supply a couple of lines of code that I can plug into a fresh console to see how a double precision (1x3) matrix is multiplied by a double precision (3x3) matrix? I keep getting an error
2003 May 29
2
Newbie trying to Lag Variables in a regression
Perhaps I am making this too hard, but how does one regress y(t) on a constant, x(t-1) and y(t-1)? I've tried the manuals and until I get Dalgaard's book (just ordered on Amazon), I am stuck! Thanks to all in advance for your patience and consideration.
2003 May 30
1
Downloading packages from CRAN
Hello- I am trying to download packages from CRAN to my Window-based system. I downloaded the most recent version of Perl, as instructed in the Install Manual and the "car" package, just as a trial. Where should they "reside" within my computer: the unzipped Perl I have placed at ...R/rw1070; the "car" package I unzipped and placed at ...R/rw1070/library. Is this
2003 Jun 01
1
Wording of "R Installation and Administration"
...st wondering if the first sentence in the "R Installation and Administration" can be re-worded a bit so newbies won't get confused.... ---------- Forwarded message ---------- Date: Mon, 2 Jun 2003 08:56:37 +1200 (NZST) From: Ko-Kang Kevin Wang <kwan022@stat.auckland.ac.nz> To: rwatkins@cornerstonelp.com Subject: RE: [R] Downloading packages from CRAN Hi Rick, On Sun, 1 Jun 2003 rwatkins@cornerstonelp.com wrote: > Kevin- > Thanks a lot for the help -- the Install manual clearly states in the first > line of the Installing Packages section that one needs Perl5.004 or h...
2003 May 23
3
Not getting all data to a text file via write.table
Hi all- Thanks in advance for your help. I have a 2275x1 table of residuals from an lm() regression. I want to analyze this further in Excel. I tried using: df<-resid(object) write.table(df) and this yields a nice looking output in R, but because of screen constraints, I seem to loose data "out-the-top" of the Console -- which doesn't bother me, as long as I can see it
2003 May 16
1
Newbie Matrix problem refined; Can't convert .csv data to matrix
Thanks to all for your previous help. I see now that my problem is converting my .csv file of data into a matrix. My example is a (3x3) matrix with a "header" row (that doesn't contain numerics). Thanks again for your time and gracious consideration.
2003 Jun 04
1
Error Using dwtest
Hello all- I have two time series, Index1stdiff and Comps1stdiff. I regressed the first on the second and R returned the summary stats I expected. Then I looked at and plotted the residuals. I then wanted to assess autocorrelation characteristics and tried to run a Durbin-Watson using: library(lmtest) dwtest(formula=Index1stdiff~Comps1stdiff,alternative=c("greater")) I am
2003 Jun 10
1
Regression output labels
Hello to all- 1. When I run a regression which implements the augmented Dickey-Fuller test, I am confused about the names given to the regressors in the output. I understand what "xGE" stands for in a standard "lm" test involving an independent variable GE for instance, but if I lags and or differences are included in the model, what do the following "output" stand
2003 Jun 03
1
tseries "adf.test"
I have a question regarding the adf.test command in the tseries library. I have a vector of time series observations (2265 daily log prices for the OEX to be exact). I also have this same data in first-differenced form. I want to test both vectors individually for staionarity with an Augmented Dickey-Fuller test. I noticed when I use the adf.test command from the tseries library, the general