Paul Murrell's Home Page

Department

• My department home page.

Research

• The home page for R: A language and environment for computing and graphics
• The slides from a talk titled TeX Typesetting in R Graphics: The {xdvir} package given at useR! 2024 in Salzburg, July 2024.
• A technical report Porter-Duff Compositing Operators in R Graphics together with Thomas Lin Pedersen and Panagiotis Skintzos.
• A technical report Rendering Typeset Glyphs in R Graphics together with Thomas Lin Pedersen and Simon Urbanek.
• A technical report Constructive Solid Geometry and Function Representation in R (the 'hyperfun' package).
• A technical report Offsetting Lines and Polygons in 'grid' (new features in 'gridGeometry') together with Jack Wong.
• The slides from a talk titled Constructive Solid Geometry: The 'hyperfun' Package given at NZSA 2022 Unconference, November 22 2022.
• The slides from a talk titled Enriching the Vocabulary of R Graphics given at useR! 2022 (virtual), June 23 2022 (plus the 'shiny' dynamic document that draws the tooltip on mouse hover).
• An R Blog post Vectorised Patterns in R Graphics
• A technical report Constructive Geometry for Complex Grobs
• A technical report Vectorised Pattern Fills in R Graphics
• An R Blog post Updating Graphics Devices for R 4.2.0
• An R Blog post Groups and Paths and Masks in R Graphics
• A technical report Luminance Masks in R Graphics.
• The slides from a talk titled 'gggrid' it's g-g-great! Accessing 'grid' from 'ggplot2' given to the Department of Statistics at The University of Auckland (Nov 2021), plus speaker notes.
• A technical report The Path to Path Enlightenment: Stroking and Filling Paths in R Graphics.
• A technical report Becoming an R Graphics Groupie: Groups, Compositing Operators, and Affine Transformations in R Graphics.
• The slides from a talk titled Expanding the Vocabulary of R Graphics, given at useR!2021 (online), plus speaker notes.
• The slides from a talk titled Going Beyond Statistical Plots in R Graphics, given at ANZSC 2021 (online), plus speaker notes, plus R code for the main image.
• A technical report Accessing 'grid' from 'ggplot2' about the 'gggrid' package.
• A technical report Letting Go of Type 1 Fonts.
• A technical report Adding TikZ support to 'dvir'.
• The slides from a talk titled Integrating R Graphics and TikZ Graphics: The 'dvir' Package, given at NZSA 2020 (Auckland), plus a video recording of the talk.
• An R Blog post New Features in the R Graphics Engine.
• A technical report Catching up with R Graphics: Gradients, Patterns, Clipping Paths, and Masks.
• An R Blog post Improvements to Clipping in the R Graphics Engine.
• A technical report Improved Clipping in the R Graphics Engine.
• An R Blog post Changes to Symbol Fonts for Cairo Graphics Devices.
• A technical report The Agony and the Ecstacy: Adding LuaTeX support to 'dvir'.
• An R Blog post Changes to 'grid' units with Thomas Lin Pedersen.
• A technical report Visual Testing for Graphics in R (introducing the 'gdiff' package).
• An R Blog post A New palette() for R with Achim Zeileis, Martin Maechler, and Deepayan Sarkar.
• A technical report SVG In, SVG Out that talks about an update to 'grImport2' and using 'grImport2' combined with 'gridSVG' to import and export complex SVG images with R.
• An R Blog post HCL-Based Color Palettes in grDevices with Achim Zeileis.
• A technical report A Geometry Engine Interface for 'grid' (copy deposited on Figshare http://dx.doi.org/10.17608/k6.auckland.7796831)
• A technical report Rendering HTML Content in R Graphics (copy deposited on Figshare https://doi.org/10.17608/k6.auckland.7471526)
• The web pages for my book "R Graphics, Third Edition" (2018, Chapman Hall/CRC).
• A technical report MetaPost Three Ways (copy deposited on Figshare https://doi.org/10.17608/k6.auckland.7409639)
• A technical report Variable-Width Bezier Splines in R (copy deposited on Figshare https://doi.org/10.17608/k6.auckland.7290080)
• A technical report Building an mplib Shared Library (copy deposited on Figshare https://doi.org/10.17608/k6.auckland.7163429)
• A technical report Importing General-Purpose Graphics in R (copy deposited on Figshare https://doi.org/10.17608/k6.auckland.7108736)
• A technical report Revisiting Mathematical Equations in R: The 'dvir' package (copy deposited on Figshare https://doi.org/10.17608/k6.auckland.7033448)
• The slides from a talk titled Making ggplot2 Accessible, given at JSM 2018 (Vancouver) (with accompanying resources). This talks describes the VI.ggplot2() method in the 'BrailleR' package.
• A technical report Echoes of the Future (new echoGrob() function in 'gridGraphics'; copy deposited on Figshare https://doi.org/10.17608/k6.auckland.6843881)
• The slides from a talk titled The Minard Paradox, given at useR! 2018 (Brisbane) (with accompanying resources). This talks describes the 'vwline' package. A video recording of the talk is on You Tube.
• A technical report Rasterizing Chromatograms (an application of the 'rasterize' package; copy deposited on Figshare https://doi.org/10.17608/k6.auckland.6504368)
• A technical report Selective Raster Graphics (the 'rasterize' package; copy deposited on Figshare https://doi.org/10.17608/k6.auckland.6349496)
• A technical report Extreme Makeover: R Graphics Edition (copy deposited on Figshare https://doi.org/10.17608/k6.auckland.6199436)
• The slides from a talk titled Making Colour Accessible, given as part of the Ihaka Lectures series (Auckland, 2018), plus speaker notes and a video recording.
• A technical report Putting the Macron in Māori: Accented text in R Graphics (copy deposited on Figshare https://doi.org/10.17608/k6.auckland.5936527)
• A technical report An ISCC-NBS Colour List for 'roloc' (copy deposited on Figshare https://doi.org/10.17608/k6.auckland.5866902)
• A technical report Generating Colour Names: The 'roloc' Package for R (copy deposited on Figshare https://doi.org/10.17608/k6.auckland.5821107)
• The slides from a talk titled gridSVG: Then and Now, given at the joint IASC/ARS, NZSA, ORSNZ 2017 conference (Auckland).
• Resources for a short course Getting to Know grid Graphics (given at the joint IASC/ARS, NZSA, ORSNZ 2017 conference, Auckland, December 2017).
• A technical report Speeding up gridSVG (copy deposited on Figshare https://doi.org/10.17608/k6.auckland.5549353)
• A technical report Offset Curves for Variable-Width X-splines (copy deposited on Figshare https://doi.org/10.17608/k6.auckland.5110030)
• A technical report Variable-Width Line Ends and Line Joins (copy deposited on Figshare https://doi.org/10.17608/k6.auckland.5084701)
• A technical report Variable-width lines in R (copy deposited on Figshare https://doi.org/10.17608/k6.auckland.5023580.v1)
• A technical report Automating R Demonstration Videos (copy deposited on Figshare https://dx.doi.org/10.17608/k6.auckland.4292831.v1)
• The slides from a talk titled The Web Browser as an R Graphics Device, given at NZSA 2016 (AUT) (with accompanying resources).
• The slides from a talk titled Publish for Pleasure: Embracing Modern Tools for Research Publications, given at The University of Auckland, November 2016 (with accompanying resources).
• A technical report 'DOM' Version 0.4 (copy deposited on Figshare https://dx.doi.org/10.17608/k6.auckland.4219599.v1)
• A technical report 'DOM' Version 0.3 (copy deposited on Figshare https://dx.doi.org/10.17608/k6.auckland.4046688.v1)
• A technical report 'DOM' Version 0.2 (copy deposited on Figshare https://dx.doi.org/10.17608/k6.auckland.3842793.v1 and ResearchSpace)
• A technical report The Butterfly Affectation (a case study using grImport, grImport2, and gridSVG).
• A technical report A transformable markup document format together with Ashley Noel Hinton.
• A technical report An Introduction to the 'DOM' Package.
• A technical report OpenAPI version 0.6 together with Ashley Noel Hinton.
• A technical report OpenAPI version 0.5 together with Ashley Noel Hinton.
• A technical report An OpenAPI Pipeline for NZ Crime Data.
• A technical report An Improved Pipeline for CPI Data.
• A technical report An OpenAPI Pipeline for CPI Data.
• A technical report Importing the New R Logo.
• A technical report Debugging Display List Internals.
• A technical report OpenAPI version 0.3 together with Ashley Noel Hinton.
• A technical report Recording and Replaying the Graphics Engine Display List (with accompanying resources).
• A technical report A 'safemode' Package for R (with accompanying resources).
• A technical report Generating SVG for Web Pages with the gridSVG Package.
• The slides from a talk titled The gridGraphics Package (given at useR! 2015 in Aalborg, July 2015).
• Resources for a short course Getting to Know grid Graphics (given at useR! 2015 in Aalborg, July 2015).
• A poster titled The conduit Package, plus a handout (presented at useR! 2015 in Aalborg, July 2015).
• A technical report Introducing OpenAPI (an overview of the OpenAPI Project) together with Ashley Noel Hinton.
• A draft article "The gridGraphics Package" (introductory overview of the gridGraphics package), with accompanying resources.
• The slides from a talk titled The openapi Project (an introduction to the goals and ideas for the openapi project, plus a look at some prototype software) together with Ashley Noel Hinton (with accompanying resources). This talk was a Department of Statistics Seminar 18 Sep, 2014 and was also given at Statistics New Zealand on 16 Oct, 2014.
• A technical report on Invertible Reproducible Documents together with Eric Lim and Finlay Thompson.
• The slides from a talk titled grid Graphics from Top to Bottom (a meander through some of the basics of grid, plus dips into some more advanced uses of grid, gridSVG, and gridGraphviz) given at the Auckland R Users Group meetup on 2 May, 2014.
• The slides from a talk titled A New Zealand Price Kaleidoscope (a demonstration of a home-grown CPI visualisation tool, but the real messages were: (i) data users could make data reuses reusable [e.g., by open source'ing their code] and (ii) data providers could also consider releasing [some of] their data-producing code [e.g., CPI calculations in code form]) given at the Official Statistics User Forum 2014 conference at Te Papa, Wellington.
• A technical report on Improving the 'gridGraphviz' package in R together with Ashley Noel Hinton.
• A draft article "Enhanced Vector Image Import: The grConvert and grImport2 packages" (introductory overview of the grImport2 package (and the grConvert package); submitted to The R Journal), with accompanying resources togethe with Simon Potter.
• The slides from a talk titled Reusable Graphics (how to make reusable graphics and why you might want to) given at the NZSA+ORSNZ 2013 conference at the University of Waikato (with accompanying resources).
• A draft article "The gridSVG Package" (introductory overview of the gridSVG package; published in The R Journal), with accompanying resources.
• A technical report on Improved Importing of Vector Graphics in R (report on Simon Potter's Google Summer of Code project to improve the grImport package, which ended up producing two new packages: grConvert and grImport2) together with Simon Potter.
• The slides from a talk titled Seeing Through grid Graphics (a retrospective attempt to identify important ideas from the design of the 'grid' graphics package) given at JSM 2013 in Montreal (resources to follow).
• The slides from a talk titled R Graphics for the Web (in praise of SVG over PNG and gridsvg() over svg(), with and lots of demonstrations of what the 'gridSVG' package can do) given at the University of Western Ontario (August 2013) (resources to follow).
• A technical report on Advanced SVG Graphics in R (accessing SVG features like gradient fills, masks, and clipping paths from R) together with Simon Potter.
• A technical report on Generating Structured and Labelled SVG (why structure and labelling is important in SVG code and how to achieve it) together with Simon Potter.
• A technical report on Generating unique names in gridSVG (how grid grob names get transformed to SVG ids by gridSVG) together with Simon Potter.
• A technical report on Post-Processing grid Graphics (creating an interactive ggplot2 plot for the web).
• A draft Comment on Gelman and Unwin's discussion about statistical graphics versus information visualization (to appear in the Journal of Computational and Graphical Statistics).
• A technical report on Generating Animation Sequence Descriptions ("storyboarding" animation sequences) together with Simon Potter.
• A technical report on Writing grid Extensions (a new approach to developing custom grid grobs); published in the R Journal.
• A technical report on A Structured Approach for Generating SVG (gridSVG now uses the XML package to generate SVG) together with Simon Potter.
• A technical report on Working with the gridSVG Coordinate System (gridSVG now exports coordinate system information to SVG/javascript) together with Simon Potter.
• A technical report on Voronoi Treemaps in R (includes link to code).
• A draft article "It's Not What You Draw, It's What You Not Draw: Drawing Paths With Holes in R Graphics" (published in The R Journal), with accompanying resources.
• A draft article "Viewing Data: The rdataviewer package", (with accompanying resources).
• A table of R graphics par() memnonics.
• A draft article "What's in a Name?: The Importance of Naming grid Grobs" (published in The R Journal).
• A draft article "Debugging grid Graphics" (published in The R Journal).
• A draft article "Dynamic and Interactive R Graphics for the Web: the gridSVG package", joint with Simon Potter (with accompanying resources).
• The slides from a talk titled R Graphics: What's in it for You? (a high-level summary of the features of R graphics that allow you to customise, extend, and program R graphics [and why that is such a useful thing]) given at CSIRO R User Group Conference (October 2011), plus a page of resources.
• The slides from a talk titled What's in a name? (a naming scheme for 'lattice' and how that can be used to do fine-tuned customisations; plus a couple more gridSVG demos) given at the NZSA 2011 conference (August 2011), plus a page of resources.
• The slides from a talk on Vector Image Processing (importing a picture into R and exporting an interactive SVG version) given at the UseR! 2011 conference (August 2011), plus a page of resources.
• The resources from a short course Introduction to Grid Graphics given at the UseR! 2011 conference (August 2011).
• The slides from a talk on Is image() Everything? (the recently-added raster image support in the R graphics engine) given at the Bay Area UseR Group (July 2011), plus a page of resources.
• The slides from a talk on Dynamic and Interactive R Graphics for the Web (the gridSVG package) given at Genentech (July 2011), plus a page of resources.
• The slides from a talk on Gore: What is it Good For? (an argument for the usefulness of knowledge of and access to low-level gory details of graphics systems) given at Berkeley (July 2011), plus a page of resources.
• The web pages for my book "R Graphics, Second Edition" (2011, Chapman Hall/CRC).
• Some notes on using special glyphs within text output on an R graphics device.
• The slides from a talk on How to be a DRY lecturer given at ICOTS 8, Ljubljana, Slovenia (July 2010).
• The slides from a talk on Exploring Student Histories (plus a supporting data set and R code) given at The University of Auckland (August 2009).
• The slides from a talk on Viewing R Objects (the 'rdataviewer' package) given at The University of Auckland (July 2009).
• The web pages for my book "Introduction to Data Technologies".
• A draft article "Quality Control for Statistical Graphics: the graphicsQC package for R", joint with Stephen Gardiner (published in JSS).
• A draft article "Importing Vector Graphics: the grImport package for R" (published in JSS), plus a tar ball of supporting files, plus what some might deem a frivolous application (with the assistance of the 'animation' package).
• The slides from a talk on Automating Marking of R Code (the 'compare' package) given at The University of Auckland (October 2008). Also see the corresponding article in R News volume 8(2).
• A draft article "Drawing Diagrams with R" (published in The R Journal), plus a small R package gridDiagram (Windows binary) in support of the article.
• The slides from a talk on Reusable Documents given at NZSA2008 (University of Waikato, September 2008) [plus a longer version that there wasn't time for].
• The Handbook of Computational Statistics (Volume III) Data Visualization.
• The slides from a talk on Why Details Matter in Statistical Graphics given at the Vienna University of Technology (Nov 2007).
• The slides from a talk on Graphical Data and Data Graphics given at the University of Economics and Business Administration in Vienna (Oct 2007). Same first half as the Cambridge talk, but the second half has a much better example of extracting data from survival curves.
• The slides from a talk on Graphical Data and Data Graphics given at the MRC BSU in Cambridge (July 2007; includes demonstration of grImport being used to extract data from a plot).
• The slides from a talk on Display Lists in R (plus R code for the examples and one extended example) given at DSC 2007 in Auckland.
• The slides from a talk on Importing Graphics for Statistical Plots given at JSM 2006 in Seattle (more on grImport package). WARNING: over 6MB download.
• The cmsyasm font for producing mathematical formulas in R (in PDF or PostScript output) using LaTeX math symbols.
• The slides from a talk on fonts in plots at ASC/NZSA 2006 in Auckland (plus source files).
• The slides from a keynote at useR! 2006 "Can R Draw Graphs?" (includes mention of grImport package). WARNING: over 6MB download.
• The slides from a talk on writing graphics functions using grid given at DSC 2005 (Seattle).
• The web pages for my book "R Graphics" (2005, Chapman Hall/CRC).
• The slides from a keynote at useR! 2004; "grid Graphics and Programming".
• The slides from talks at a workshop in Tokyo (December 2003): recent developments in R, R grid graphics (slight modification of the talk given in Vancouver and Toronto), and current and future developments in R graphics.
• The slides from a talk on grid given at UBC (Vancouver) and York University (Toronto) 2003.
• The (HTML) slides from a talk on Web Delivery of R Graphics at JSM 2003.
  This talk includes material on the gridSVG package.
  The SVG content within the slides has only been verified using the Adobe SVG Viewer 3.0 under Windows and Internet Explorer.
• The slides from a course on R Graphics at DSC 2003 (and a handout).
• The slides from a course on S Graphics at Auckland Feb 2003 (and a handout).
• The slides from a talk on quality assurance for graphics at DSC 2003.
• The slides from a talk on colour at JSM 2002.
• The slides from a talk on grid at DSC 2001.

Teaching

• The slides from a departmental talk on STATS 220.
• The home page for the course STATS 220.
• Some ideas for graduate student projects (or theses or even just simple exercises).