1646 search results for "time series"

Discovering Argon with the 2-Sample t-Test

Discovering Argon with the 2-Sample t-Test

I learned about Lord Rayleigh’s discovery of argon in my 2nd-year analytical chemistry class while reading “Quantitative Chemical Analysis” by Daniel Harris.  (William Ramsay was also responsible for this discovery.)  This is one of my favourite stories in chemistry; it illustrates how diligence in measurement can lead to an elegant and surprising discovery.  I find

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visualising large amounts of hourly environmental data

March 3, 2013
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visualising large amounts of hourly environmental data

It is Sunday, it's raining and I have a few hours to spend before I am invited for lunch at my parents place. Hence, I thought I'd use the time to produce another post. It has been a while since … Continue reading →

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R 2.15.3 is released

March 1, 2013
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Follows is the announcement today from Peter Dalgaard, for the R Core Team: The build system rolled up R-2.15.3.tar.gz (codename “Security Blanket”) at 9:00 this morning. This is intended to be the final round-up release of the 2.15 series, and in fact of the entire 2.x.y series which started 2004-10-04. The list below details the changes in this release. You can get...

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Summary of My First Trip to Strata #strataconf

February 28, 2013
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Summary of My First Trip to Strata #strataconf

In this post I am goIing to summarize some of the things that I learned at Strata Santa Clara 2013. For now, I will only discuss the conference sessions as I have a much longer post about the tutorial sessions that I am still working on and will post at a later date. I will add to this post...

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The MaxDiff Killer: Rank-Ordered Logit Models

February 27, 2013
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Compared to MaxDiff (Sawtooth Software), ranked-order logit modeling:simplifies data collection without needing additional software to generate experimental designsreduces respondent burden making the task easier and seemingly ...

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The Paul Tol 21-color salute

February 27, 2013
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The Paul Tol 21-color salute

You may or may not know that PerformanceAnalytics contains a number of specific color schemes designed for charting data in R (they aren’t documented well, but they show up in some of the chart examples). I’ve been collecting color palates for years in search of good combinations of attractiveness, relative weight, and distinctiveness, helped along

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R Bootcamp Materials!

February 24, 2013
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R Bootcamp Materials!

Learn about ColoRs in R!Analyze model results with custom functions.Good and Bad GraphicsTo train new employees at the Wisconsin Department of Public Instruction, I have developed a 2-3 day series of training modules on how to get work done in R. These...

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Multi-species dynamic occupancy model with R and JAGS

February 24, 2013
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Multi-species dynamic occupancy model with R and JAGS

This post is intended to provide a simple example of how to construct and make inferences on a multi-species multi-year occupancy model using R, JAGS, and the ‘rjags’ package. This is not intended to be a standalone tutorial on dynamic community occupancy modeling. Useful primary literature references include MacKenzie et al. (2002), Kery and Royle (2007), Royle and Kery...

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Copying Data from Excel to R and Back

February 23, 2013
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Copying Data from Excel to R and Back

A lot of times we are given a data set in Excel format and we want to run a quick analysis using R's functionality to look at advanced statistics or make better visualizations. There are packages for importing/exporting data from/to Excel, but I have found them to be hard to work with or only work with old versions of...

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The Financial Crisis on Tape Part I

February 23, 2013
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The Financial Crisis on Tape Part I

Hello and welcome to Joe's Data Diner's first ever post!Today, I will touch on both R and Finance, but I'll try and make it accesible for those with an interest in either and not just Quants like myself!Almost everyone is now aware that asset correlati...

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