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Author's title

Author

*Unverified author*

R Software Module

rwasp_spectrum.wasp

Title produced by software

Spectral Analysis

Date of computation

Wed, 10 Dec 2008 00:43:41 -0700

Cite this page as follows

Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?v=date/2008/Dec/10/t1228895045spaw4idmz59gc70.htm/, Retrieved Sun, 19 May 2024 07:18:45 +0000

Statistical Computations at FreeStatistics.org, Office for Research Development and Education, URL https://freestatistics.org/blog/index.php?pk=31869, Retrieved Sun, 19 May 2024 07:18:45 +0000

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IsPrivate?

No (this computation is public)

User-defined keywords

Estimated Impact

207

Family? (F = Feedback message, R = changed R code, M = changed R Module, P = changed Parameters, D = changed Data)

F       [Spectral Analysis] [] [2008-12-10 07:43:41] [76e580e81b2082744334eb1f6d9ccc3e] [Current]

Feedback Forum

2008-12-10 16:50:22 [Sam De Cuyper] [reply] 
OK, correct berekend en goede interpretatie.
2008-12-11 12:59:30 [72e979bcc364082694890d2eccc1a66f] [reply] 
Het cumulatief periodogram ligt binnen het betrouwbaarheidsinterval.  
Hier gaat de student dan wel trendmatig EN seizoenaal differentiëren. De student geeft dus verschillende oplossingen. Het is dus het beste om eenmaal trendmatig en eenmaal seizoenaal te differentiëren.
2008-12-13 11:09:59 [Sandra Hofmans] [reply] 
Je zag bij de vorige grafiek dat deze snel steeg aan de linkerkant. Dit wijst op een lange termijn trend. Ook was hier een trapfunctie te zien wat wijst op seizoenaliteit.  Hiervoor heb je inderdaad de juiste parameters ingesteld. Het is de bedoeling om een diagonaal te bekomen die volledig in het betrouwbaarheidsinterval ligt. 

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Dataseries X:

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Histogram

Boxplots

Summary of computational transaction
Raw Input	view raw input (R code)
Raw Output	view raw output of R engine
Computing time	3 seconds
R Server	'Herman Ole Andreas Wold' @ 193.190.124.10:1001

\begin{tabular}{lllllllll}
\hline
Summary of computational transaction \tabularnewline
Raw Input & view raw input (R code)  \tabularnewline
Raw Output & view raw output of R engine  \tabularnewline
Computing time & 3 seconds \tabularnewline
R Server & 'Herman Ole Andreas Wold' @ 193.190.124.10:1001 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=31869&T=0

[TABLE]
[ROW][C]Summary of computational transaction[/C][/ROW]
[ROW][C]Raw Input[/C][C]view raw input (R code) [/C][/ROW]
[ROW][C]Raw Output[/C][C]view raw output of R engine [/C][/ROW]
[ROW][C]Computing time[/C][C]3 seconds[/C][/ROW]
[ROW][C]R Server[/C][C]'Herman Ole Andreas Wold' @ 193.190.124.10:1001[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=31869&T=0

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=31869&T=0

As an alternative you can also use a QR Code:

The GUIDs for individual cells are displayed in the table below:

Summary of computational transaction
Raw Input	view raw input (R code)
Raw Output	view raw output of R engine
Computing time	3 seconds
R Server	'Herman Ole Andreas Wold' @ 193.190.124.10:1001

Raw Periodogram
Parameter	Value
Box-Cox transformation parameter (lambda)	-1.5
Degree of non-seasonal differencing (d)	1
Degree of seasonal differencing (D)	1
Seasonal Period (s)	12
Frequency (Period)	Spectrum
0.0111 (90)	0
0.0222 (45)	0
0.0333 (30)	0
0.0444 (22.5)	0
0.0556 (18)	0
0.0667 (15)	0
0.0778 (12.8571)	0
0.0889 (11.25)	0
0.1 (10)	0
0.1111 (9)	0
0.1222 (8.1818)	0
0.1333 (7.5)	0
0.1444 (6.9231)	0
0.1556 (6.4286)	0
0.1667 (6)	0
0.1778 (5.625)	0
0.1889 (5.2941)	0
0.2 (5)	0
0.2111 (4.7368)	0
0.2222 (4.5)	0
0.2333 (4.2857)	0
0.2444 (4.0909)	0
0.2556 (3.913)	0
0.2667 (3.75)	0
0.2778 (3.6)	0
0.2889 (3.4615)	0
0.3 (3.3333)	0
0.3111 (3.2143)	0
0.3222 (3.1034)	0
0.3333 (3)	0
0.3444 (2.9032)	0
0.3556 (2.8125)	0
0.3667 (2.7273)	0
0.3778 (2.6471)	0
0.3889 (2.5714)	0
0.4 (2.5)	0
0.4111 (2.4324)	0
0.4222 (2.3684)	0
0.4333 (2.3077)	0
0.4444 (2.25)	0
0.4556 (2.1951)	0
0.4667 (2.1429)	0
0.4778 (2.093)	0
0.4889 (2.0455)	0
0.5 (2)	0

\begin{tabular}{lllllllll}
\hline
Raw Periodogram \tabularnewline
Parameter & Value \tabularnewline
Box-Cox transformation parameter (lambda) & -1.5 \tabularnewline
Degree of non-seasonal differencing (d) & 1 \tabularnewline
Degree of seasonal differencing (D) & 1 \tabularnewline
Seasonal Period (s) & 12 \tabularnewline
Frequency (Period) & Spectrum \tabularnewline
0.0111 (90) & 0 \tabularnewline
0.0222 (45) & 0 \tabularnewline
0.0333 (30) & 0 \tabularnewline
0.0444 (22.5) & 0 \tabularnewline
0.0556 (18) & 0 \tabularnewline
0.0667 (15) & 0 \tabularnewline
0.0778 (12.8571) & 0 \tabularnewline
0.0889 (11.25) & 0 \tabularnewline
0.1 (10) & 0 \tabularnewline
0.1111 (9) & 0 \tabularnewline
0.1222 (8.1818) & 0 \tabularnewline
0.1333 (7.5) & 0 \tabularnewline
0.1444 (6.9231) & 0 \tabularnewline
0.1556 (6.4286) & 0 \tabularnewline
0.1667 (6) & 0 \tabularnewline
0.1778 (5.625) & 0 \tabularnewline
0.1889 (5.2941) & 0 \tabularnewline
0.2 (5) & 0 \tabularnewline
0.2111 (4.7368) & 0 \tabularnewline
0.2222 (4.5) & 0 \tabularnewline
0.2333 (4.2857) & 0 \tabularnewline
0.2444 (4.0909) & 0 \tabularnewline
0.2556 (3.913) & 0 \tabularnewline
0.2667 (3.75) & 0 \tabularnewline
0.2778 (3.6) & 0 \tabularnewline
0.2889 (3.4615) & 0 \tabularnewline
0.3 (3.3333) & 0 \tabularnewline
0.3111 (3.2143) & 0 \tabularnewline
0.3222 (3.1034) & 0 \tabularnewline
0.3333 (3) & 0 \tabularnewline
0.3444 (2.9032) & 0 \tabularnewline
0.3556 (2.8125) & 0 \tabularnewline
0.3667 (2.7273) & 0 \tabularnewline
0.3778 (2.6471) & 0 \tabularnewline
0.3889 (2.5714) & 0 \tabularnewline
0.4 (2.5) & 0 \tabularnewline
0.4111 (2.4324) & 0 \tabularnewline
0.4222 (2.3684) & 0 \tabularnewline
0.4333 (2.3077) & 0 \tabularnewline
0.4444 (2.25) & 0 \tabularnewline
0.4556 (2.1951) & 0 \tabularnewline
0.4667 (2.1429) & 0 \tabularnewline
0.4778 (2.093) & 0 \tabularnewline
0.4889 (2.0455) & 0 \tabularnewline
0.5 (2) & 0 \tabularnewline
\hline
\end{tabular}
%Source: https://freestatistics.org/blog/index.php?pk=31869&T=1

[TABLE]
[ROW][C]Raw Periodogram[/C][/ROW]
[ROW][C]Parameter[/C][C]Value[/C][/ROW]
[ROW][C]Box-Cox transformation parameter (lambda)[/C][C]-1.5[/C][/ROW]
[ROW][C]Degree of non-seasonal differencing (d)[/C][C]1[/C][/ROW]
[ROW][C]Degree of seasonal differencing (D)[/C][C]1[/C][/ROW]
[ROW][C]Seasonal Period (s)[/C][C]12[/C][/ROW]
[ROW][C]Frequency (Period)[/C][C]Spectrum[/C][/ROW]
[ROW][C]0.0111 (90)[/C][C]0[/C][/ROW]
[ROW][C]0.0222 (45)[/C][C]0[/C][/ROW]
[ROW][C]0.0333 (30)[/C][C]0[/C][/ROW]
[ROW][C]0.0444 (22.5)[/C][C]0[/C][/ROW]
[ROW][C]0.0556 (18)[/C][C]0[/C][/ROW]
[ROW][C]0.0667 (15)[/C][C]0[/C][/ROW]
[ROW][C]0.0778 (12.8571)[/C][C]0[/C][/ROW]
[ROW][C]0.0889 (11.25)[/C][C]0[/C][/ROW]
[ROW][C]0.1 (10)[/C][C]0[/C][/ROW]
[ROW][C]0.1111 (9)[/C][C]0[/C][/ROW]
[ROW][C]0.1222 (8.1818)[/C][C]0[/C][/ROW]
[ROW][C]0.1333 (7.5)[/C][C]0[/C][/ROW]
[ROW][C]0.1444 (6.9231)[/C][C]0[/C][/ROW]
[ROW][C]0.1556 (6.4286)[/C][C]0[/C][/ROW]
[ROW][C]0.1667 (6)[/C][C]0[/C][/ROW]
[ROW][C]0.1778 (5.625)[/C][C]0[/C][/ROW]
[ROW][C]0.1889 (5.2941)[/C][C]0[/C][/ROW]
[ROW][C]0.2 (5)[/C][C]0[/C][/ROW]
[ROW][C]0.2111 (4.7368)[/C][C]0[/C][/ROW]
[ROW][C]0.2222 (4.5)[/C][C]0[/C][/ROW]
[ROW][C]0.2333 (4.2857)[/C][C]0[/C][/ROW]
[ROW][C]0.2444 (4.0909)[/C][C]0[/C][/ROW]
[ROW][C]0.2556 (3.913)[/C][C]0[/C][/ROW]
[ROW][C]0.2667 (3.75)[/C][C]0[/C][/ROW]
[ROW][C]0.2778 (3.6)[/C][C]0[/C][/ROW]
[ROW][C]0.2889 (3.4615)[/C][C]0[/C][/ROW]
[ROW][C]0.3 (3.3333)[/C][C]0[/C][/ROW]
[ROW][C]0.3111 (3.2143)[/C][C]0[/C][/ROW]
[ROW][C]0.3222 (3.1034)[/C][C]0[/C][/ROW]
[ROW][C]0.3333 (3)[/C][C]0[/C][/ROW]
[ROW][C]0.3444 (2.9032)[/C][C]0[/C][/ROW]
[ROW][C]0.3556 (2.8125)[/C][C]0[/C][/ROW]
[ROW][C]0.3667 (2.7273)[/C][C]0[/C][/ROW]
[ROW][C]0.3778 (2.6471)[/C][C]0[/C][/ROW]
[ROW][C]0.3889 (2.5714)[/C][C]0[/C][/ROW]
[ROW][C]0.4 (2.5)[/C][C]0[/C][/ROW]
[ROW][C]0.4111 (2.4324)[/C][C]0[/C][/ROW]
[ROW][C]0.4222 (2.3684)[/C][C]0[/C][/ROW]
[ROW][C]0.4333 (2.3077)[/C][C]0[/C][/ROW]
[ROW][C]0.4444 (2.25)[/C][C]0[/C][/ROW]
[ROW][C]0.4556 (2.1951)[/C][C]0[/C][/ROW]
[ROW][C]0.4667 (2.1429)[/C][C]0[/C][/ROW]
[ROW][C]0.4778 (2.093)[/C][C]0[/C][/ROW]
[ROW][C]0.4889 (2.0455)[/C][C]0[/C][/ROW]
[ROW][C]0.5 (2)[/C][C]0[/C][/ROW]
[/TABLE]
Source: https://freestatistics.org/blog/index.php?pk=31869&T=1

Globally Unique Identifier (entire table): ba.freestatistics.org/blog/index.php?pk=31869&T=1

As an alternative you can also use a QR Code:

The GUIDs for individual cells are displayed in the table below:

Raw Periodogram
Parameter	Value
Box-Cox transformation parameter (lambda)	-1.5
Degree of non-seasonal differencing (d)	1
Degree of seasonal differencing (D)	1
Seasonal Period (s)	12
Frequency (Period)	Spectrum
0.0111 (90)	0
0.0222 (45)	0
0.0333 (30)	0
0.0444 (22.5)	0
0.0556 (18)	0
0.0667 (15)	0
0.0778 (12.8571)	0
0.0889 (11.25)	0
0.1 (10)	0
0.1111 (9)	0
0.1222 (8.1818)	0
0.1333 (7.5)	0
0.1444 (6.9231)	0
0.1556 (6.4286)	0
0.1667 (6)	0
0.1778 (5.625)	0
0.1889 (5.2941)	0
0.2 (5)	0
0.2111 (4.7368)	0
0.2222 (4.5)	0
0.2333 (4.2857)	0
0.2444 (4.0909)	0
0.2556 (3.913)	0
0.2667 (3.75)	0
0.2778 (3.6)	0
0.2889 (3.4615)	0
0.3 (3.3333)	0
0.3111 (3.2143)	0
0.3222 (3.1034)	0
0.3333 (3)	0
0.3444 (2.9032)	0
0.3556 (2.8125)	0
0.3667 (2.7273)	0
0.3778 (2.6471)	0
0.3889 (2.5714)	0
0.4 (2.5)	0
0.4111 (2.4324)	0
0.4222 (2.3684)	0
0.4333 (2.3077)	0
0.4444 (2.25)	0
0.4556 (2.1951)	0
0.4667 (2.1429)	0
0.4778 (2.093)	0
0.4889 (2.0455)	0
0.5 (2)	0

Figure 1

PNG link

Postscript link

PDF link

Figure 2

PNG link

Postscript link

PDF link

Parameters (Session):

par1 = -1.5 ; par2 = 1 ; par3 = 1 ; par4 = 12 ;

Parameters (R input):

par1 = -1.5 ; par2 = 1 ; par3 = 1 ; par4 = 12 ;

R code (references can be found in the software module):

par1 <- as.numeric(par1)
par2 <- as.numeric(par2)
par3 <- as.numeric(par3)
par4 <- as.numeric(par4)
if (par1 == 0) {
x <- log(x)
} else {
x <- (x ^ par1 - 1) / par1
}
if (par2 > 0) x <- diff(x,lag=1,difference=par2)
if (par3 > 0) x <- diff(x,lag=par4,difference=par3)
bitmap(file='test1.png')
r <- spectrum(x,main='Raw Periodogram')
dev.off()
bitmap(file='test2.png')
cpgram(x,main='Cumulative Periodogram')
dev.off()
load(file='createtable')
a<-table.start()
a<-table.row.start(a)
a<-table.element(a,'Raw Periodogram',2,TRUE)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,'Parameter',header=TRUE)
a<-table.element(a,'Value',header=TRUE)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,'Box-Cox transformation parameter (lambda)',header=TRUE)
a<-table.element(a,par1)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,'Degree of non-seasonal differencing (d)',header=TRUE)
a<-table.element(a,par2)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,'Degree of seasonal differencing (D)',header=TRUE)
a<-table.element(a,par3)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,'Seasonal Period (s)',header=TRUE)
a<-table.element(a,par4)
a<-table.row.end(a)
a<-table.row.start(a)
a<-table.element(a,'Frequency (Period)',header=TRUE)
a<-table.element(a,'Spectrum',header=TRUE)
a<-table.row.end(a)
for (i in 1:length(r$freq)) {
a<-table.row.start(a)
mylab <- round(r$freq[i],4)
mylab <- paste(mylab,' (',sep='')
mylab <- paste(mylab,round(1/r$freq[i],4),sep='')
mylab <- paste(mylab,')',sep='')
a<-table.element(a,mylab,header=TRUE)
a<-table.element(a,round(r$spec[i],6))
a<-table.row.end(a)
}
a<-table.end(a)
table.save(a,file='mytable.tab')

Free Statistics

Description of Statistical Computation

Tree of Dependent Computations

Dataset

Tables (Output of Computation)

Figures (Output of Computation)

Input Parameters & R Code