2016-05 An Improved Pipeline for CPI Data
This report provides an update on a previous report, “An OpenAPI Pipeline for CPI Data”, which described the construction of an OpenAPI pipeline to produce …
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2016-04 An OpenAPI Pipeline for CPI Data
This report documents the creation of an OpenAPI pipeline from information on a web page that explores CPI data. The purpose of creating this pipeline …
2016-03 Importing the New R Logo
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 …
2016-02 Debugging Display List Internals
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 …
2016-01 OpenAPI version 0.3
The OpenAPI project aims to help people connect with data. OpenAPI is a software architecture for wrapping component pieces of data analysis – datasets, programming …
2015-07 Recording and Replaying the Graphics Engine Display List
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 …
2015-06 A ‘safemode’ Package for R
The ‘safemode’ package provides a safemode() function that creates a “safe mode” session in R. In “safe mode”, all symbols have an “age” (a last-modified …
2015-05 Generating SVG for Web Pages with the gridSVG Package
This document describes several different techniques for including SVG images within a web page and points out the important SVG attributes that control the final …
2015-04 Helping people to connect with data
This articles explores the problem of helping people connect with data. In the first section I examine the importance of connecting people with data, and …
2015-03 Uncertainty Evaluation of Computer Simulation Models (Draft Report)
Deterministic agricultural and agro-ecosystem systems models have an important role worldwide. Although these models are mathematically deterministic, there are many possible sources of uncertainty that …