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