2649 search results for "gis"

Some code to help you remember numbers

January 17, 2012
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Some code to help you remember numbers

Two posts ago we showed you the digit sound system for remembering numbers. This week we provide two computer programs to help you create mnemonics.

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Parallel R Loops for Windows and Linux

January 17, 2012
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Parallel computation may seem difficult to implement and a pain to use, but it is actually quite simple to use. The foreach package provides the basic loop structure, which can utilize various parallel backends to execute the loop in parallel. First,...

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Illustrating the Deferred Acceptance Algorithm with R

January 17, 2012
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Illustrating the Deferred Acceptance Algorithm with R

The Deferred Acceptance Algorithm (DAA) goes back to Gale and Shapley (1962). They introduce a rather simple algorithm that finds a stable matching for example for college admissions or in a marriage market. In a marriage market where M men have prefer...

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Annotating limma Results with Gene Names for Affy Microarrays

January 17, 2012
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Annotating limma Results with Gene Names for Affy Microarrays

Lately I've been using the limma package often for analyzing microarray data. When I read in Affy CEL files using ReadAffy(), the resulting ExpressionSet won't contain any featureData annotation. Consequentially, when I run topTable to get a list of di...

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Foreign Currencies and US 10y Treasury Yields

January 17, 2012
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Foreign Currencies and US 10y Treasury Yields

Since I explored the relationship between the Japanese Yen and the US 10y Treasury Yield on Friday, I thought it might be worthwhile to extend the exploration to a much broader range of currencies. I personally am most interested on how Asian Central B...

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Parallel R Loops in Windows and Linux

January 17, 2012
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Parallel computation may seem difficult to implement and a pain to use, but it is actually quite simple to use. The foreach package provides the basic loop structure, which can utilize various parallel backends to execute the loop in parallel. First, let's go over the basic structure of a foreach loop. To get the foreach package, run the following...

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Mid-January flotsam: teaching edition

January 17, 2012
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Mid-January flotsam: teaching edition

I was thinking about new material that I will use for teaching this coming semester (starting the third week of February) and suddenly compiled the following list of links: William Briggs writes It is time to stop teaching Frequentism to … Continue reading →

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Scraping table from any web page with R or CloudStat

January 15, 2012
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Scraping table from any web page with R or CloudStat

Scraping table from any web page with R or CloudStat: You need to use the data from internet, but don’t type, you can just extract or scrape them if you know the web URL. Thanks to XML package from R. It provides amazing readHTMLtable() function. For...

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R-squared for multilevel models

January 15, 2012
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Fred Schiff writes: I’m writing to you to ask about the “R-squared” approximation procedure you suggest in your 2004 book with Dr. Hill. I’m a media sociologist at the University of Houston. I’ve been using HLM3 for about two years. Briefly about my data. It’s a content analysis of The post R-squared...

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Are We Japanese?

January 13, 2012
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Are We Japanese?

Most of the discussion trying to determine if the U.S. is Japan 20 years later focuses on the economy and the stock market.  However, one of the biggest and most persistent correlations between Japan and the U.S. are the Japanese Yen and the U.S. ...

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