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[edit] Summary

An image of random numbers, with a hidden sine function, with a wavelength every 10 units. The bottom image shows the autocorrelation.

Made using R:

library(RSvgDevice)
x <- rnorm(100) + sin(2*pi*1:100/10)
devSVG("acf.pdf", width=3, height=4)
par(mfrow=c(2,1), mar=c(3.5, 3.5, 0.5, 0.5), mgp=c(2, 0.8, 0), cex=.7)
plot(x, type="o", col="blue", main=NA)
acf(x, 100, main=NA)
dev.off()

Minor edit for dashed line in bottom figure using Inkscape.

Template:Created with R

[edit] Licensing

I, the copyright holder of this work, hereby publish it under the following licenses: Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.2 or any later version published by the Free Software Foundation; with no Invariant Sections, no Front-Cover Texts, and no Back-Cover Texts. Subject to disclaimers. This file is licensed under the Creative Commons Attribution ShareAlike license versions 2.5, 2.0, and 1.0 You may select the license of your choice.

This page uses content from the Wikimedia Commons. The original content was at Image:Acf.svg. The list of authors can be seen in the page history. As with this Psychology Wiki wiki, that portion of the content of Wikimedia Commons is available under the GNU Free Documentation License.

File history

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	Date/Time	User	Dimensions	File size	Comment
current	12:34, 5 November 2007	PhloxBot (Talk | contribs)	217×289	50 KB	== Summary == An image of random numbers, with a hidden sine function, with a wavelength every 10 units. The bottom image shows the autocorrelation. Made using R: <pre> library(RSvgDevice)

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Links

The following pages link to this file:

• Autocorrelation
• Image:Acf.svg