Blog Archives

2016-15 Automating R Demonstration Videos

December 7, 2016
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This document describes a proof-of-concept for producing R demonstration videos in a fully-automated manner. The “script” for the video consists of a text file containing code chunks paired with text commentary. The video is produced by running the code while … Continue reading →

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2016-14 ‘DOM’ version 0.4

November 9, 2016
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This report describes changes in version 0.4 of the ‘DOM’ package for R. The main change in this version is the addition of new functions that allow control over the Cascading Style Sheet (CSS) content of a web page. This … Continue reading →

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2016-13 ‘DOM’ Version 0.3

October 20, 2016
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This report describes changes in version 0.3 of the ‘DOM’ package for R. This version represents a major refactoring of the package code, including its user-facing API. These changes were made in order to facilitate the addition of new features … Continue reading →

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2016-12 ‘DOM’ Version 0.2

September 13, 2016
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This report describes changes in version 0.2 of the ‘DOM’ package for R. Version 0.1 of ‘DOM’ allowed HTML content to be added to a web page (or removed or modified); version 0.2 adds the ability to append SVG content … Continue reading →

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2016-11 The Butterfly Affectation

August 30, 2016
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This report documents a variety of approaches to including an external vector image within an R plot. The image presents particular challenges because it contains features that are not natively supported by the R graphics system, which makes it hard … Continue reading →

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2016-10 A transformable markup document format

July 28, 2016
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Many technologies now exist for writing a document in a format that can be transformed into various output formats for sharing. This report proposes that using markup, rather than one of the Markdown languages, is a good fit for writing … Continue reading →

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2016-09 An Introduction to the ‘DOM’ Package

July 26, 2016
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The ‘DOM’ package for R provides functions to dynamically manipulate the content of a web page that is being viewed within a web browser. The package provides an R interface that is analogous to the DOM (Document Object Model) functions … Continue reading →

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2016-03 Importing the New R Logo

February 16, 2016
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The R project has a new logo (shown below). On his blog, Bob Rudis showed how to draw the new R logo as part of an R plot. The purpose of this report is demonstrate an alternative way to draw … Continue reading →

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2016-02 Debugging Display List Internals

February 15, 2016
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This report documents the process of debugging a problem with the recording and replaying of R plots from one R session to another. The purpose of this report is to record the source of the problem, to record the solution … Continue reading →

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2015-07 Recording and Replaying the Graphics Engine Display List

December 20, 2015
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In the development version of R (to be R 3.3.0), it is possible again to save the result of recordPlot() from one R session and then load it and replay it, with replayPlot(), in a different R session. This recording … Continue reading →

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