2743 search results for "GIS"

When can we expect the last damn microarray paper?

January 18, 2012
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When can we expect the last damn microarray paper?

With bonus R codeIt came as a shock to learn from PubMed that almost 900 papers were published with the word "microarray" in their titles last year alone, just 12 shy of the 2010 count. More alarming, many of these papers were not of the innocuous "Microarray study of gene expression in dog scrotal tissue" variety, but dry...

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SOPA and PIPA damage the Internet – R-bloggers off-topic post

January 18, 2012
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Dear R people, It is a (VERY) rare event that I allow a non-R related content on R-bloggers. Today is one such rare a day. I do this in order to raise awareness of two bills in congress: H.R.3261 “Stop Online Piracy Act” and S.968 “PROTECT IP”, which could radically change the landscape of the Internet. These bills provide overly broad mechanisms...

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Mining Facebook Data: Most "Liked" Status and Friendship Network

January 18, 2012
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Mining Facebook Data: Most "Liked" Status and Friendship Network

Professional R Enthusiast published a quick manual how to use Facebook Graph API. I particularly like a trick to obtain an access-token using Graph API Explorer.Now, you can easily employ R to get your most "Liked" Facebook status ever. For m...

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Methodology for Assessment of Environmental Risk Caused by Fires at Illegal Dumps

January 18, 2012
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Methodology for Assessment of Environmental Risk Caused by Fires at Illegal Dumps

It's actually already two month old news, but my research "Developement of the Universal Methodology for Assessement of Environmental Risk Caused by Fires at Illegal Dumps" (download in RUSSIAN), that was made special for Fire Monitoring Challenge (by GIS-Lab, Microsoft, NEXTGIS, several universities and GIS/spatial data corporations), was  awarded the 2-nd pace. The prize consisted...

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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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