On 15/07/2012 19:57, chester123 wrote:
Hi there and thanks in advance.
Nowadays I am working on the plug-in bandwidth selection with R. Firstly, my
So why use package KernSmooth and not the methods in R itself?
1010 data is the return rate from Yahoo Finance.
Secondly, my code is following:
r=read.table("/Users/user/Desktop/research/a.txt",sep=",",header=TRUE)
x<-r[8:1010,]
library(KernSmooth)
dpik(x,scalest="minim",level=2L,kernel="normal",canonical=FALSE,gridsize=401L,range.x=range(x),truncate=TRUE)
But the error happens like this:
Error in Summary.factor(c(233L, 917L, 381L, 748L, 272L, 242L, 269L, 963L, :
range not meaningful for factors
I don't know what's wrong and i am a rookie, please help with that. Thanks!
So what is 'x'? We don't know (your code is not reproducible), but it
sure looks like a factor. And from the help:
x: vector containing the sample on which the kernel density
estimate is to be constructed.
A factor is not a vector (in this sense).
PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
PLEASE do as you were asked.
--
Brian D. Ripley, rip...@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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PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
and provide commented, minimal, self-contained, reproducible code.
