Blog Archives

YAML: Define an R function

August 18, 2016
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YAML to define hierarchic models Glenn is using the data.tree package to model commercial mortgage-backed securities. If you don’t know what that is, you can read it all up on Wikipedia. But in a nutshell, CMBS (or REMIC) are financial instruments that bundle multiple commercial real estate mortgages, and securitize (or bundle) them into tradeable entities. The post

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R profiling

June 5, 2016
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R profiling

Profiling in R R has a built in performance and memory profiling facility: Rprof. Type  into your console to learn more. The way the profiler works is as follows: you start the profiler by calling Rprof, providing a filename where the profiling data should be stored you call the R functions that you want to analyse you The post

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Reference semantics in R

June 1, 2016
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Question I recently got a mail from Václav on reference semantics in data.tree, reading as follows: Dear Christoph, I am rather inexperienced when it comes to environments in R and henceforth I apologize if my question is basic; however, my colleagues are no better than me to answer my question. I would have a question iro The post

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Solving Math Puzzles with data.tree

May 29, 2016
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I got a note from Karim Lahrichi, who even thinks about math when he’s supposed to be drinking beer. The bar puzzle they were trying to solve goes like this: Using all of the numbers 1, 3, 4, 6 exactly once, and any combination of: addition, subtraction, multiplication and division (and parenthesis to group operations however you The post

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Password protect Shiny Apps

February 19, 2016
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Password protect Shiny Apps

In this post, we explain how you can password protect apps hosted on Shiny Open Source server. This tutorial is the fourth in our Shiny AWS series. It builds on the previous tutorials, namely: Setting up an AWS instance for R Installing Shiny Server on AWS Shiny https As with the other tutorials in the series, The post

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R data.tree 0.3 “Apple Tree” on CRAN: Now with tree plot!

February 13, 2016
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R data.tree 0.3 “Apple Tree” on CRAN: Now with tree plot!

Read about the exciting new features of the latest data.tree release. generate tree plots! The post R data.tree 0.3 “Apple Tree” on CRAN: Now with tree plot! appeared first on ipub.

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ahp 0.2.4 on CRAN

January 18, 2016
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ahp 0.2.4 on CRAN

The latest version of the ahp package contains lots of new features and visualizations! The post ahp 0.2.4 on CRAN appeared first on ipub.

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Shiny https: Securing Shiny Open Source with SSL

December 23, 2015
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Shiny https: Securing Shiny Open Source with SSL

As described in my Shiny overview post, there are different versions of Shiny server. Among other limitations, the open source flavor does not come with built-in support for https and user access control. In this post, we explain how you can nevertheless turn your Shiny Open Source server into a Shiny https server. This tutorial builds on The post

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R ahp package on github

December 21, 2015
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R ahp package on github

AHP lets you analyse complex decision making problems. We have recently released the initial version of the R ahp package on github: gluc/ahp. What is AHP? The Analytic Hierarchy Process is a decision making framework developed by Thomas Saaty. Read this entry on Wikipedia for more information. There is commercial software available to use this methodology for The post

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Installing RStudio Shiny Server on AWS

December 1, 2015
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Installing RStudio Shiny Server on AWS

In this beginner’s level tutorial, you’ll learn how to install Shiny Server on an AWS cloud instance, and how to configure the firewall. It will take just a few minutes! Why? Playing around with Shiny is simple enough: all you need is is the R package called shiny, which you can get directly from CRAN. Making your The post

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