Hi Rogerio:
   
  Thks a lot. It works.
   
  By the way, I have 2 related sides issues that need some help:
  (1)  What I want to do is this
  - do modwt on original time series
  - do thresholding on wavelet coefficients
  - obtain the inversed smoothed and detailed components of the original time series using the thesholded coefficients. How can this be done ?
   
  mra accept the original time series as input.
  imodwt rountine will give me the inversed transformed in the form of original time series, instead of separating them into detailed and smoothed component.  
   
  (2) Is there a way to make R giving me error messages in English instead of Chinese so that I can communicate with others easily
   
  Thks

rdporto1 <rdporto1@terra.com.br> 說：
  Airon,

I don't think you have to find an English computer 'cause the
following must work in your Chinese one :-)

Let me explain. First of all, change your lines to

xdata <- ckhdat$Adj..Close[1:1447]
#names(ckhdwt.la8) <- c("w1", "w2", "w3", "w4", "w5","w6", "v6")

note the # sign, i.e., DO NOT change the names before
the function imodwt.

This is because the function imodwt looks for the names
created by the modwt function. If you need to change names,
do it AFTER the reconstruction.

I hope that it helps you.

Rogerio

---------- Cabe蓷lho original -----------

De: "Airon Yiu" aironyiu@yahoo.com.hk
Para: "rdporto1" rdporto1@terra.com.br
C鏕ia: "r-help" r-help@stat.math.ethz.ch
Data: Wed, 15 Nov 2006 23:49:57 +0800 (CST)
Assunto: ??: Re:??: Re:[R] Need help in waveslim package: imodwt and universal.thresh.modwt

> Hi Rogerio:
>
> Here is what I tried. I have used only data points 1 to 1447 but the same problems appear if I used all the data in the file I sent .
>
> >library(waveslim)
> >infile <-"C:\\airon.csv"
> >ckhdat <- read.csv(infile,header=TRUE, quote="")
> ...
> 1464 23-Dec-05,80.8,81,80.7,80.95,1538304,80.95
> 1465 28-Dec-05,80.85,81,80.3,80.7,3728116,80.7
> 1466 29-Dec-05,80.8,80.95,80.3,80.4,3145493,80.4
> 1467 30-Dec-05,80.4,80.2,78.85,79.65,7508611,79.65
> >xdata <- ckhdata$adjcls[1:1447]
> > ckhdwt.la8 <- modwt(xdata, "la8", n.levels = 6)
> > names(ckhdwt.la8) <- c("w1", "w2", "w3", "w4", "w5","w6", "v6")
> >
> > ydata <- imodwt(ckhdwt.la8)
> > ydata
> numeric(0)
> > thre_wc_univ <- universal.thresh.modwt(ckhdwt.la8, max.level = 4, hard = FALSE)
> ???abs(wc.fine) : ??????????
> >
>
> Note that the error message for universal.thresh.modwt is in Chinese. It roughly means "Error at abs(wc.find) : variable cannot have non-numeric value"
>
> I need to find an WinXP (English) machine to see if the same issue appers.
>
> Thks



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