1695 search results for "time series"

analyze the health and retirement study (hrs) with r

January 14, 2013
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the hrs is the one and only longitudinal survey of american seniors.  with a panel starting its third decade, the current pool of respondents includes older folks who have been interviewed every two years as far back as 1992.  unlike cross-se...

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A first example of using Boost

January 14, 2013
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A first example of using Boost

Boost is, to quote the quote by Sutter and Alexandrescu which adornes the Boost website, …one of the most highly regarded and expertly designed C++ library projects in the world. The impact of Boost on C++ cannot be overstated. Boost is, at its core, a collection of thoroughly designed and peer-reviewed libraries. Some of these have...

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audiolyzR: Data sonification with R

January 13, 2013
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audiolyzR: Data sonification with R

In his talk “Give Your Data A Listen” at last summer’s useR! 2012 conference, Eric Stone presented joint work with Jesse Garrison on audiolyzR, an R package for “data sonification.” I thought this was a nifty and well-executed idea. Since I haven’t seen … Continue reading →

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Decluttering ordination plots in vegan part 2: orditorp()

January 13, 2013
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Decluttering ordination plots in vegan part 2: orditorp()

In the earlier post in this series I looked at the ordilabel() function to help tidy up ordination biplots in vegan. An alternative function vegan provides is orditorp(), the last four letters abbreviating the words text or points. That is … Continue reading →

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Decluttering ordination plots in vegan part 2: orditorp()

January 13, 2013
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Decluttering ordination plots in vegan part 2: orditorp()

In the earlier post in this series I looked at the ordilabel() function to help tidy up ordination biplots in vegan. An alternative function vegan provides is orditorp(), the last four letters abbreviating the words text or points. That is a pretty good description of what orditorp() does; it...

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Decluttering ordination plots in vegan part 1: ordilabel()

January 12, 2013
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Decluttering ordination plots in vegan part 1: ordilabel()

In an earlier post I showed how to customise ordination diagrams produced by our vegan package for R through use of colours and plotting symbols. In a series of short posts I want to cover some of the options available … Continue reading →

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Decluttering ordination plots in vegan part 1: ordilabel()

January 12, 2013
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Decluttering ordination plots in vegan part 1: ordilabel()

In an earlier post I showed how to customise ordination diagrams produced by our vegan package for R through use of colours and plotting symbols. In a series of short posts I want to cover some of the options available in vegan that can be used to help in producing better, clearer,...

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Adding Comments to CSV Files

January 11, 2013
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Various of my R scripts produce csv files as output. For instance, I run a lengthy SVM back test, the end result is a csv file containing the indicator with some additional information. The problem is that over time one loses track what exactly the file contained and what parameters were used to produce it.

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My Personal Intro to F1 Race Statistics

January 10, 2013
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My Personal Intro to F1 Race Statistics

One of the many things I keep avoiding is statistics. I’ve never really been convinced about the 5% significance level thing; as far as I can tell, hardly anything that’s interesting normally distributes; all the counting that’s involved just confuses me; and I never really got to grips with confidently combining probabilities. I find a

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Maps in R: Plotting data points on a map

January 10, 2013
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Maps in R: Plotting data points on a map

In the introductory post of this series I showed how to plot empty maps in R. Today I'll begin to show how to add data to R maps. The topic of this post is the visualization of data points on … Continue reading →

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