Displaying 20 results from an estimated 20000 matches similar to: "Please make lowess() generic (was: Reorganization of packages in the R distribution)"
2004 Jan 21
0
Please make lowess() generic (was: Reorganization of pac kagesin the R distribution)
I don't really see the point. lowess() is a two-dimensional smoother only
so the main point would only be to allow lowess(y ~ x, dat) instead of
lowess(dat$x, dat$y).
Bill V.
-----Original Message-----
From: r-devel-bounces@stat.math.ethz.ch
[mailto:r-devel-bounces@stat.math.ethz.ch] On Behalf Of Warnes, Gregory R
Sent: Wednesday, 21 January 2004 4:48 PM
To: 'R-devel'
Subject:
2001 Mar 12
2
residuals from lowess fit
Colleagues
----------------------------------
System info:
R version rw1022 on NT
ESS v. 5.1.18 using emacs ver. 20.4
----------------------------------
I would like to access the residuals from a lowess fit (function lowess() )
as an aid to assessing whether I am over-smoothing or under-smoothing
a dataset (as in Cleveland's book "Visualizing data", section 3.3)
Unless I
2008 May 20
1
S4 generic for lowess
Hi,
A lowess method is defined in our package for one of our S4 classes. To
explicitely define the generic this is being used
if (!isGeneric("lowess"))
setGeneric("lowess", useAsDefault = lowess)
This works fine for many other methods inherited from various R
packages. In this case a warning is issued in R CMD check:
* checking R code for possible problems ... NOTE
2001 Dec 08
1
lowess() as a generic function
Hi All,
I've been providing a generic version of lowess() in my 'gregmisc' library,
along with a 'lowess.formula' and 'lowess.default'.
Can/should these be moved into base?
-Greg
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2003 Apr 10
3
A Question on lowess() function
Hi, all,
I want to use lowess(x, y) where x and y are vectors of length of 4000+. In
fact, x and y are log of some vectors. So, some of the elements are NaN.
lowess() can not take away those elements then do the fitting. It will give
the error message and do nothing.
1. Can anybody tell me how to get rid of those NaN's and use lowess()?
2. How to get the LOWESS fitting values for any
2008 Aug 05
2
95% CI bands on a Lowess smoother
Hi there,
I'm plotting some glass RI values just by plotting
plot(x)
then I put on my lowess smoother
lines(lowess(x))
now I want to put on some 95% Confidence Interval bands of the lowess
smoother, but don't know how??
Thanks
--
Gareth Campbell
PhD Candidate
The University of Auckland
P +649 815 3670
M +6421 256 3511
E gareth.campbell@esr.cri.nz
gcam032@gmail.com
[[alternative
2012 Sep 24
2
add lowess predicted line to scatter plot
Hi,
I have a scatter plot of the variables GNI and Lifeexp (Gross National
Income and Life Expectancy, both metric). So I plotted them and I want to
add a regression line and a lowess line. I use lowess and not loess because
I have missing values. My code:
plot(GNI,Lifeexp)
abline(lm(Lifeexp~GNI), col="red")
y.loess<-loess(Lifeexp~GNI,na.
action = na.exclude)
2010 Nov 22
1
how to sample lowess/loess into matrix ?
code:
x <- rnorm(32)
y <- rnorm(32)
plot(x,y)
lines(lowess(x,y),col='red')
Now I need to sample the lowess function into matrix where one series will
be X and other will be values of lowess at particular X.
--
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2006 Jan 04
5
multiple lowess line in one plot
I'm using this code to plot a smoothed line. These two columns of data
really represent 4 groups and I'd like to plot a separate line for each
group but have them all in the same plot. The R-Docs for lowess do not
seem to indicate some type of "GROUPS=var_name" option. What would be
the syntax for this?
plot(AWGT ~ lipid )
lines(lowess(lipid , AWGT, f=.8))
--
Dean
2012 Sep 10
1
lowess regression
Dear all,
please do you have any recommendation about a more advanced function in R
for lowess/loess regression ?
the basics lowess() or loess() do not perform as well as I would expect.
thanks very much,
Bogdan
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2006 Feb 07
2
Prediction method for lowess,loess,lokerns,lpepa,ksmooth
Hi Every Body,
I don't know why some regression functions have no related prediction function. For example lowess, loess, lokerns, lpridge, lpepa, and ksmooth.
What could help? Is there any global or wrapper function so that can help?
Regards,
Amir Safari
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2003 Nov 26
1
lines(lowess()) trouble
hi: apologies for taking up everyone's time. my problem is probably
documented somewhere, but I again cannot find it. (which reminds me: I cannot
find a search engine that allows me to search the archives of this very useful
mailing list.)
* it seems that lines(lowess()) fails to plot certain line segments. (and,
what does it do at the x-min and x-max of a data set?) Rather than
2003 Mar 27
2
Na action with Lowess smoothing
Hi there,
I cant seem to find a way for the lowess smoothing function to handle "NA"
values.
Can anyone help??
Regards,
Wayne
Dr Wayne R. Jones
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KSS Group plc
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2009 Feb 02
1
xyplot with lowess curves
I am trying to change the attributes of the lowess lines fit to an
xyplot command, but have been unsuccessful in my search of the online
help. Right now, both the points and lowess line come out in the same
color (blue). I am unsure how I can change the properties of the lowess
line separately.
xyplot (
SnowLineElevation ~ Year | Model,
data = data,
ylim = c(0,1800),
type =
2001 May 23
3
New generic functions in "R base" {was `truncate'}
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1) What are the issues with making _existing_ functions in base into
generics?
EG, I've recently
2023 Mar 23
1
loess plotting problem
Dear Anupam Tyagi,
You didn't include your data, so it's not possible to see exactly what
happened, but I think that you misunderstand the object that loess()
returns. It returns a "loess" object with several components, including
the original data in x and y. So if pass the object to lines(), you'll
simply connect the points, and if x isn't sorted, the points
2001 Aug 14
1
loess() v.s. lowess()
Hi there,
Just out of curious, is there any difference between loess() and
lowess() in R (and Splus in fact).
Which one is more often used?
Thanks,
Ko-Kang Wang
------------------------------------------------------------------------------
Ko-Kang Kevin Wang
Statistical Analysis Division Leader
Software Developers' Klub (SDK)
University of Auckland
New Zealand
2012 Apr 24
1
Scatter plot / LOESS, or LOWESS for more than one parameter
Hi folks.
If I have the following in my "data"
event pH1 pH2
1 4.0 6.0
2 4.3 5.9
3 4.1 6.1
4 4.0 5.9
and on and on..... for about 400 events
Is there a way I can get R to plot event vs. pH1 and event vs. pH2 and
then do a loess or lowess line for each??
Thanks in advance
David
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2001 Oct 23
1
lowess C code
Hi,
I understand that the core of lowess() function is written in C.
Is the C source code available and if yes, how can I get to it?
I want to write a multidimensional extension of lowess() if you know of
anybody who has implemented this already I would greatly appreciate any
references or pointers.
thank you very much,
pawel
2023 Mar 23
1
loess plotting problem
Thanks, John.
However, loess.smooth() is producing a very different curve compared to the
one that results from applying predict() on a loess(). I am guessing they
are using different defaults. Correct?
On Thu, 23 Mar 2023 at 20:20, John Fox <jfox at mcmaster.ca> wrote:
> Dear Anupam Tyagi,
>
> You didn't include your data, so it's not possible to see exactly what
>