Displaying 12 results from an estimated 12 matches for "velleman".
2012 Oct 22
1
4253H twice implementation
Dear All,
Anybody know if *4253H twice filter* is implemented in R?
*Description of filter:* Applies a series of running medians of varying
window size and a weighted average filter, with re-roughing, to the NDVI
time series
*Reference*: Velleman, P. (1980). Definition and comparison of robust
nonlinear data smoothing algorithms. Journal of the American Statistical
Association..
Thanks
Julio
[[alternative HTML version deleted]]
2017 May 30
3
stats::line() does not produce correct Tukey line when n mod 6 is 2 or 3
..., including infinite loops, fixed most
AFAICS, but somehow did not finish making the result available.
Yes, and I have too many other things on my desk... this will
have to wait!
References:
Tukey, J. W. (1977). _Exploratory Data Analysis_, Reading
Massachusetts: Addison-Wesley.
Velleman, P. F. and Hoaglin, D. C. (1981) _Applications, Basics
and Computing of Exploratory Data Analysis_ Duxbury Press.
Emerson, J. D. and Hoaglin, D. C. (1983) Resistant Lines for y
versus x. Chapter 5 of _Understanding Robust and Exploratory Data
Analysis_, eds. David C. Hoaglin,...
2003 Jul 16
2
Stem and leaf display?
I would like to do some fairly basic stem-and-leaf displays in R.
I am aware (I might even say painfully aware) of stem(base) and
have tried it. That's why I'm hoping someone has a usable stem-
and-leaf display for R so that I don't have to write my own.
r-project.org > Search > R Site Search > "stem and leaf display"
finds nothing.
I also tried the mail archive
2017 May 30
2
stats::line() does not produce correct Tukey line when n mod 6 is 2 or 3
>>>>> Serguei Sokol <sokol at insa-toulouse.fr>
>>>>> on Mon, 29 May 2017 15:28:12 +0200 writes:
> Sorry, I have seen it too late that we had different tab
> width in the original file and my editor. Here is the
> patch with all white spaces instead of mixing tabs and
> white spaces.
thank you - it still gives quite a few
2017 May 31
2
stats::line() does not produce correct Tukey line when n mod 6 is 2 or 3
Le 31/05/2017 ? 17:30, Serguei Sokol a ?crit :
>
> More thorough reading revealed that I have overlooked this phrase in the
> line's doc: "left and right /thirds/ of the data" (emphasis is mine).
Oops. I have read the first ref returned by google and it happened to be
tibco's doc, not the R's one. The layout is very similar hence my mistake.
The latter does not
2009 Mar 15
1
Bug Report Fwd: MANOVA Data (PR#13595)
...Message-----
From: dvdbooth at cs.com
To: kberk at ilstu.edu
Sent: Sun, 15 Mar 2009 7:01 pm
Subject: Re: MANOVA Data
Ken,
Did you notice that Wilks, Roy, etc p-values are all the same?? Pillai is almost the SAS result.? Can't figure it out.? I'll submit a bug report. What's Velleman going to talk about?? Thanks for looking at the R.
Best,
Dave
-----Original Message-----
From: Ken Berk <kberk at ilstu.edu>
To: dvdbooth at cs.com
Sent: Sun, 15 Mar 2009 3:45 pm
Subject: Re: Fwd: MANOVA Data
At 08:07 PM 3/5/2009, you wrote:
Hi Ken,
I...
2017 May 31
0
stats::line() does not produce correct Tukey line when n mod 6 is 2 or 3
...these years {apart from the bug which
typically shows for non-equidistant x[]}.
We could also consider to eventually add a new 'method = <string>'
argument to line() one version of which would continue to
compute the current solution, another would compute the one
corresponding to Velleman & Hoaglin (1981)'s FORTRAN
implementation (which had to be corrected for some infinite-loop
cases!)... not in the close future though
Given all this discussions here, I think I should commit what I
currently have ASAP.
Martin
> x[DELETED ATTACHMENT line.c.patch2, plain text]
2018 Aug 26
0
proposed patch to /src/library/datasets/man/mtcars.Rd
...cheers
Ben Bolker
===================================================================
--- mtcars.Rd (revision 75186)
+++ mtcars.Rd (working copy)
@@ -35,6 +35,14 @@
Building multiple regression models interactively.
\emph{Biometrics}, \bold{37}, 391--411.
}
+\details{
+Henderson and Velleman (1981) comment in a footnote to Table 1:
+\sQuote{Hocking [original transcriber]'s noncrucial coding of the
+Mazda's rotary engine as a straight six-cylinder engine and the
+Porsche's flat engine as a V engine, as well as the inclusion of the diesel
+Mercedes 240D, have been retained t...
2009 Mar 29
2
re form data for aov()?
I have data in a file named hands.dat, which is given at the end of this
question. (It's from a stats textbook example on anova). I'd like to do an
aov on this, which I guess would be
d <- read.table("~/hands.dat", header=TRUE)
aov(Bacterial.Counts ~ Water + Soap + Antibacterial.Soap + Alcohol.Spray,
data=d)
but this fails. Do I need to break d$Method up into columns for
2003 Feb 24
3
bwplot stats question
Hi List,
Just wondering where the documentation exists for the statistics which
makeup the bwplot.
I'm guessing that if R is like similar products that the graph is
constructed as
The median is the filled circle. The box surrounding the filled circle
depicts the 25th and 75th quartile. The range of values is given by the
dotted lines (?whiskers?) outside of each box, and possible
2017 May 29
3
stats::line() does not produce correct Tukey line when n mod 6 is 2 or 3
Here is an attached patch.
Best,
Serguei.
Le 29/05/2017 ? 12:21, Serguei Sokol a ?crit :
> The problem or actual R implementation relies on an assumption
> that median(x[i] | x[i] <= quantile(x, 1/3)) == quantile(x, 1/6)
> which reveals not to be true despite very trustful appearance.
>
> If we continue with the example of x=y=1:9
> then quantile(x, 1/6)=2.5 (here quantile()
2011 Feb 19
2
cant start program
...f8)
30 0x7bc72870 call_thread_entry_point+0x6f() in ntdll (0x0032ffc8)
31 0x7bc4cc4a in ntdll (+0x3cc49) (0x0032ffe8)
0x7bc48e3a: movl %edi,0x0(%ecx)
Modules:
Module Address Debug info Name (149 modules)
PE 370000- 37f000 Deferred supercollection
PE 380000- 386000 Deferred velleman k8062.out
PE 400000- b1f000 Export dmxcontrol
PE c470000- c492000 Deferred dmxctypelib
PE c4a0000- c4b4000 Deferred colortools
PE c6d0000- c6d8000 Deferred img stageline.out
PE c6e0000- c6ea000 Deferred enttec pro.out
PE c6f0000- c6f9000 Deferred...