3130 search results for "gis"

Scenario analysis and trading options using R

June 16, 2013
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Scenario analysis and trading options using R

I present you with my restructured project on options trading and scenario analysis. You are more than welcome to try it out. Firstly, I will give a small presentation that will reveal what you can do with it and whether you need to continue reading. T...

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On the RStudio download logs

On the RStudio download logs

Some days ago H. Wickham (Chief Scientist of the RStudio company) posted an article about the RStudio CRAN mirror with …Continuar leyendo »

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Interval Estimation of the Population Mean

June 14, 2013
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Interval estimation of the population mean can be computed from the functions of the following R packages:stats - contains the t.testTeachingDemos - contains the z.testBSDA - contains the zsum.test and tsum.testThe t.test of the stats package is a stud...

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Google Prediction API example

June 13, 2013
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Google's prediction API offers a blackbox way of doing some prediction. They had advertised an R package, but it doesn't seem to work with the new version of the prediction API or their OAuth2 authentication mechanism. So, in an effort to check out the...

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New version of solaR

New version of solaR

I have updated my package solaR. This package provides calculation methods of solar radiation and performance of photovoltaic systems from …Continuar leyendo »

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Cluster NHL Teams Based on 2012/13 Regular Season Performance

June 12, 2013
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Cluster NHL Teams Based on 2012/13 Regular Season Performance

Since tonight kicks off Game 1 of the Stanley Cup Finals, I thought it would be fun to do a very quick and dirty cluster analysis of the league based on regular season performance. Tonight, the Chicago Blackhawks square off against my hometown team, the Boston Bruins.  Even though it was a lockout-shortened season, the

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Plotting average read and write operation size by ASM disk for Oracle

June 12, 2013
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Plotting average read and write operation size by ASM disk for Oracle

  Throughput, throughput, throughput – for many databases, this is the performance measure of importance.  When you are working with a fixed number of IOPS but see mixed workload types, system health can be assessed through the average read and…Read more ›

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Introducing GTrendsR

June 12, 2013
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Just another R blog has beed added to r-bloggers!In a paper, to be soon published in Conservation Biology and entitle Googling trends in conservation biology, we developed a package named GTrendsR that provides an interface for retrieving and displaying the information returned online...

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Thursday: Webinar on video game analytics

June 11, 2013
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Video games are big business today: Electronic Arts (EA) generated more than 4 billion dollars in revenue last year, and they're not even the biggest player on the block. In addition to big bucks, video games also generate Big Data: 50 terabytes per day at EA alone. So there's an obvious need to apply predictive analytics to these massive...

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Measures of Skewness and Kurtosis

June 10, 2013
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Measures of Skewness and Kurtosis

Skewness and kurtosis in R are available in the moments package (to install an R package, click here), and these are:Skewness - skewnessKurtosis - kurtosisExample 1. Mirra is interested in the elapse time (in minutes) she spends on riding a tricycle fr...

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