Blog Archives

How to install R packages on an off-line SQL Server 2016 instance

May 4, 2016
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by Andrie de Vries One of the most exciting features of the forthcoming release of SQL Server 2016 (generally available on June 1, and in preview now) is the ability to run R scripts directly in database using SQL Server R Services. This means your R code will run directly on the server, as opposed to first extracting the...

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A segmented model of CRAN package growth

April 27, 2016
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A segmented model of CRAN package growth

by Andrie de Vries A few weeks ago I wrote about the growth of CRAN packages, where I demonstrated how to scrape CRAN archives to get an estimate of the number of packages over time. In this post I briefly mentioned that the Ecdat package contains a dataset, CRANpackages, with snapshots recorded by John Fox and Spencer Graves. Here...

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On the growth of CRAN packages

April 15, 2016
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On the growth of CRAN packages

by Andrie de Vries Every once in a while somebody asks me how many packages are on CRAN. (More than 8,000 in April, 2016). A year ago, in April 2015, there were ~6,200 packages on CRAN. This poses a second question: what is the historical growth of CRAN packages? One source of information is Bob Muenchen's blog R Now...

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Jupyter Notebooks with R in Azure Machine Learning Studio

March 30, 2016
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Jupyter Notebooks with R in Azure Machine Learning Studio

by Andrie de Vries Earlier today Microsoft announced that Jupyter Notebooks are now available with the R Kernel as a service in Azure Machine Learning (ML) Studio. I wrote about Jupyter Notebooks in September 2015 (Using R with Jupyter Notebooks), where I noted some of the great benefits of using notebooks: Jupyter is an easy to use and convenient...

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Using segmented regression to analyse world record running times

December 30, 2015
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Using segmented regression to analyse world record running times

by Andrie de Vries A week ago my high school friend, @XLRunner, sent me a link to the article "How Zach Bitter Ran 100 Miles in Less Than 12 Hours". Zach's effort was rewarded with the American record for the 100 mile event. Zach Bitter holds the American record for the 100 mile This reminded me of some analysis...

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Embedding images in R package help pages

December 23, 2015
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Embedding images in R package help pages

by Andrie de Vries Have you noticed that most R help does not contain any images? Historically, this was for a good reason: most programming language help assumes that you use the system on a text-only system, e.g. a headless linux server. If your system has no graphical capabilities, but the help contains images, then the help itself can...

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Securely storing your secrets in R code

December 16, 2015
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by Andrie de Vries Last month I wrote about How to store and use webservice keys and authentication details, a summary of the options mentioned in a twitter discussion started by Jennifer Bryan. All of the options in my article really stored the secrets in plain text somewhere on your system, but in such a way to minimize the...

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Setting up an Azure Resource Manager virtual machine with RStudio

December 2, 2015
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Setting up an Azure Resource Manager virtual machine with RStudio

by Andrie de Vries I am preparing for a demonstration of functionality of R at a conference next week. For maximum impact, I wanted to use a fast virtual machine in Azure. It is actually very easy to build a fresh machine (cloud or otherwise) that contains R as well as RStudio server. In essence, all you have to...

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How to store and use webservice keys and authentication details with R

November 25, 2015
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by Andrie de Vries (@RevoAndrie) I frequently get asked the question how you can safely store login details and passwords for use by R, without exposing these details in your script. Yesterday Jennifer Bryan asked this question on twitter and a small storm of views and tweets erupted. Do we have any sort of consensus whether user’s API keys...

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Enhancements to the AzureML package to connect R to AzureML Studio

November 18, 2015
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by Andrie de Vries We have written on several occasions about AzureML, the Microsoft machine learning studio that is part of the Cortana Analytics suite: Running R in the Azure ML cloud Call R functions from any application with the AzureML package Using miniCRAN in Azure ML In September we announced that the AzureML package for R allows you...

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