[R] A Question on lowess() function

Minghua Yao myao at ou.edu
Thu Apr 10 21:58:15 CEST 2003


Thank you for your reply.

I didn't find what I needed from the archieves. Maybe, I need to figure out
how to search the archieves effectively.

I used y<-x[!is.na(x)] to get rid of NA and NaN. But I don't know how to get
rid of Inf.

Also, is there more detailed info about loess() than help(loess)?

Thanks.

-MY

-----Original Message-----
From: Prof Brian Ripley [mailto:ripley at stats.ox.ac.uk]
Sent: Thursday, April 10, 2003 1:38 PM
To: Minghua Yao
Cc: r-help at stat.math.ethz.ch
Subject: Re: [R] A Question on lowess() function


lowess was old-fashioned a decade ago: use loess.

And this Q was answered about a week ago, so use the archives.

On Thu, 10 Apr 2003, Minghua Yao wrote:

> 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 elements in x?

--
Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595



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