4500 search results for "git"

Answering “How many people use my R package?”

June 11, 2013
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Answering “How many people use my R package?”

The question “How many people use my R package?” is a natural question that (I imagine) every R package developer asks himself at some point or another. After many years in the dark, a silver lining has now emerged thanks …Read more »

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Rickshaw d3.js from R with rCharts

June 11, 2013
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Shutterstock’s open source Rickshaw provides a very nice tutorial to get started building interactive time series d3.js charts with Rickshaw.  I just could not resist rebuilding the tutorial but this time ENTIRELY in R with the amazing packages slidify and rCharts.  I have embedded the tutorial below,...

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R2leaflet (v0.1) – make interactive online maps from R

June 11, 2013
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R2leaflet (v0.1) – make interactive online maps from R

I have been working on a simple R function to take latitude and longitude of points of interest, and text for pop-up labels, and produce an interactive online map. Interactive graphics are incredibly useful in getting people interested in your … Continue reading →

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R package development

June 11, 2013
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R package development

Building R packages is not particular hard, but it can be a bit of a daunting endeavour at the beginning, particularly if you are more of a statistician than a computer scientist or programmer. Some concepts may appear foreign or like red tape, yet man...

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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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Scenario analysis for option strategies Pt. 2

June 10, 2013
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No vivid improvements since the last post. However, I got it to the stage, when I can share the code and let you try it yourself: https://github.com/afraid2trade/SCENARIO_ANALYSIS.git Once you downloaded it, the only thing you need to open is "sa_work...

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Microsoft Office Metadata with R

June 10, 2013
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Sometimes I need to retrieve various items of metadata from Microsoft Office files. For the 'old-style' (i.e. '.doc' and '.xls') files perhaps a solution in python, such as hachoir, was the best way to extract this data from the ole2 file format -...

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The RStudio CRAN mirror

June 10, 2013
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The RStudio CRAN mirror

RStudio maintains its own CRAN mirror, http://cran.rstudio.com. The server itself is a virtual machine run by Amazon’s EC2 service, and it syncs with the main CRAN mirror in Austria once per day. When you contact http://cran.rstudio.com, however, you’re probably not talking to our CRAN mirror directly. That’s because we use Amazon CloudFront, a content delivery

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Measure of Relative Variability

June 10, 2013
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The measure of relative variability is the coefficient of variation (CV). Unlike measures of absolute variability, the CV is unitless when it comes to comparisons between the dispersions of two distributions of different units of measurement. In R, CV ...

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Measures of Absolute Variability

June 10, 2013
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Measures of absolute variability deal with the dispersion of the data points. This include the following:Range - rangeInterquartile Range - IQRQuartile DeviationAverage DeviationStandard Deviation - sdThese measures of variability restrict to uniform u...

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