[R] Harmonic Regression in R

2006-07-03 Thread Airon Yiu
Dear all:
   
  Does anyone has harmonic regresssion analysis package written in R (to be 
used in Windows platform) ?
   
  Thanks

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[R] Need help in waveslim package: imodwt and universal.thresh.modwt

2006-11-13 Thread Airon Yiu
Hi:
  I have encountered problems with imodwt and universal.thresh.modwt and cannot 
find any reference in R Search.   Hope someone can give me some ideas:
   
  Starting with 
  modwt.la8 <- modwt(xdata, "la8", n.level=6)  <-- this seems to work fine 
   
  (1)  ydata <- imodwt(modwt.la8)
  will always give ydata as numeric(0) (no values) instead of being a time 
series data with the same lenght as xdata.  
   
  (2)   thred.la8 <- universal.thresh.modwt(modwt.la8, max.level=4, hard=F) 
will give me error at:
  abs(wc.fine)  - cannot contain non-numeric field.
   
  Any help is much appreciated.
   
  Regards

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[R] 回覆: Re: Need help in waveslim package: imodwt and universal.thresh.modwt

2006-11-13 Thread Airon Yiu
Hi  Rogerio:
   
  I am using Waveslim 1.5 on R 2.3.0, running on Chinese WinXP (SP2).  
   
  The data, attached in the CSV file, is a stock data (0001 from Hong Kong) 
downloaded from Yahoo!Finance.  The time series data are the Adj. Close prices 
(last column) from 4-Jan-00 to 30-Nov-2005.
   
  The waveslim mra rountines are working fine on these data.
   
  Thks

rdporto1 <[EMAIL PROTECTED]> 說:
  The first two commands worked fine to me. I used
xdata = rnorm(128).

To let us help you more, specify your R version,
some data, OS etc, as usually asked.

Rogerio Porto.

-- Cabe蓷lho original ---

De: [EMAIL PROTECTED]
Para: r-help@stat.math.ethz.ch
C鏕ia:
Data: Sun, 12 Nov 2006 16:02:45 +0800 (CST)
Assunto: [R] Need help in waveslim package: imodwt and universal.thresh.modwt

> Hi:
> I have encountered problems with imodwt and universal.thresh.modwt and cannot 
> find any reference in R Search. Hope someone can give me some ideas:
>
> Starting with
> modwt.la8 <- modwt(xdata, "la8", n.level=6) <-- this seems to work fine
>
> (1) ydata <- imodwt(modwt.la8)
> will always give ydata as numeric(0) (no values) instead of being a time 
> series data with the same lenght as xdata.
>
> (2) thred.la8 <- universal.thresh.modwt(modwt.la8, max.level=4, hard=F) will 
> give me error at:
> abs(wc.fine) - cannot contain non-numeric field.
>
> Any help is much appreciated.
>
> Regards
>
>





Content-Type: text/html; charset=big5
Content-Transfer-Encoding: 8bit

Hi  Rogerio:     I am using Waveslim 1.5 
on R 2.3.0, running on Chinese WinXP (SP2).       
The data, attached in the CSV file, is a stock data (0001 from Hong Kong) 
downloaded from Yahoo!Finance.  The time series data are the Adj. 
Close prices (last column) from 4-Jan-00 to 30-Nov-2005.  
   The waveslim mra rountines are working fine on 
these data.     Thksrdporto1 
<[EMAIL PROTECTED]> 說:  The 
first two commands worked fine to me. I usedxdata = rnorm(128).To 
let us help you more, specify your R version,some data, OS etc, as usually 
asked.Rogerio Porto.-- Cabe蓷lho original 
---De: [EMAIL PROTECTED]Para:
 r-help@stat.math.ethz.chC鏕ia:Data: Sun, 12 Nov 2006 16:02:45 +0800 
(CST)Assunto: [R] Need help in waveslim package: imodwt and 
universal.thresh.modwt> Hi:> I have encountered problems with 
imodwt and universal.thresh.modwt and cannot find any reference in R Search. 
Hope someone can give me some ideas:>> Starting with> 
modwt.la8 <- modwt(xdata, "la8", n.level=6) <-- this seems to work 
fine>> (1) ydata <- imodwt(modwt.la8)> will always give 
ydata as numeric(0) (no values) instead of being a time series data with the 
same lenght as xdata.>> (2) thred.la8 <- 
universal.thresh.modwt(modwt.la8, max.level=4, hard=F) will give me error 
at:> abs(wc.fine) - cannot contain non-numeric field.>> 
Any help is much appreciated.>> 
Regards>> ___
 YM - 離線訊息

Content-Type: application/octet-stream; name="CKH-0001-ALL-data-only.csv"
Content-Transfer-Encoding: base64
Content-Description: 3176266068-CKH-0001-ALL-data-only.csv
Content-Disposition: attachment; filename="CKH-0001-ALL-data-only.csv"

MDg2MTEsNzkuNjUNCg==

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[R] 回覆: Re:??: Re: Need help in wavesl im package: imodwt and universal.thresh.modwt

2006-11-15 Thread Airon Yiu
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
146528-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
146730-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)
¿ù»~¦babs(wc.fine) : ¨ç¼Æ¤£¯à¦³«D¼Æ­È¤Þ¼Æ
> 

  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
  
rdporto1 <[EMAIL PROTECTED]> »¡¡G
  Airon,

I used R2.4.0 on a Windows XP (SP2) (not Chinese :-))
and it still works:

> data = read.csv("u:/airon.csv")
> xdata = data$Adj..Close
> modwt.la8 = modwt(xdata, "la8", n.level=6)
> summary(modwt.la8)
Length Class Mode
d1 1467 -none- numeric
d2 1467 -none- numeric
d3 1467 -none- numeric
d4 1467 -none- numeric
d5 1467 -none- numeric
d6 1467 -none- numeric
s6 1467 -none- numeric
> ydata = imodwt(modwt.la8)
> summary(ydata)
Min. 1st Qu. Median Mean 3rd Qu. Max.
37.35 57.56 67.93 67.31 78.32 104.90
> max(ydata-xdata)
[1] 2.957279e-11

Can you provide a simple program and the resulting
messages showing that it doesn't work?

Rogerio.


-- Cabeçalho original ---

De: "Airon Yiu" [EMAIL PROTECTED]
Para: "rdporto1" [EMAIL PROTECTED]
Cópia: "r-help" r-help@stat.math.ethz.ch
Data: Tue, 14 Nov 2006 13:56:51 +0800 (CST)
Assunto: ??: Re:[R] Need help in waveslim package: imodwt and 
universal.thresh.modwt

> Hi Rogerio:
>
> I am using Waveslim 1.5 on R 2.3.0, running on Chinese WinXP (SP2). 
>
> The data, attached in the CSV file, is a stock data (0001 from Hong Kong) 
> downloaded from Yahoo!Finance. The time series data are the Adj. Close prices 
> (last column) from 4-Jan-00 to 30-Nov-2005.
>
> The waveslim mra rountines are working fine on these data.
>
> Thks



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[R] 回覆: Re:??: Re:??: Re: Need help in waveslim package: imodwt and universal.thresh.m odwt

2006-11-15 Thread Airon Yiu
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 <[EMAIL PROTECTED]> »¡¡G
  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

-- Cabeçalho original ---

De: "Airon Yiu" [EMAIL PROTECTED]
Para: "rdporto1" [EMAIL PROTECTED]
Cópia: "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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