SVGAnnotation: The SVGAnnotation Package
In duncantl/SVGAnnotation: Tools for post-processing SVG plots created in R

Description Author(s)

This package provides facilities for annotating and enhancing static SVG documents created with R's regular graphics systems (grz, lattice and grid). We can add interactivity, animation and filtering effects. With SVG we can customize the appearance of the elements using Cascading Style Sheets, either as files or inlined into the SVG document. We can programmatically control the elements of the SVG at viewing time using ECMAScript/JavaScript code. We can embed the SVG within HTML (and other formats such as FO and hence PDF) and can access the objects with JavaScript in a bi-directional manner.

This package has high-level facilities for annotating regular R plots such as scatterplots, pairs() plots, lattice plots, etc. These include animate, addToolTips, addLink, addAxesLinks.

The package also provides intermediate level tools for finding elements in the SVG document that correspond to components in the statistical display, e.g. axes labels, the title of a plot, the plot regions, the points within a plot region. Having found these elements, we can pass these elements to other high- to intermediate-level tools such as the ones we mentioned above to add the annotations.

Functions such as addCSS and addECMAScripts allow us to insert content into the SVG to control the appearance and viewing time behavior, including serializing R objects as JavaScript variables that can be used at viewing time.

There are additional, lower level facilities for working with aspects of the SVG elements. For example, there are functions to extract, process the SVG path of an element and its sub-elements and to compute bounding boxes, the type of shape, etc.

The help files for this package do provide reference material for the functions and some examples. However, the best place to find the high-level information about the functions and the package generally is to look at the relatively extensive set of examples. These are available online at http://www.omegahat.org/SVGAnnotation/tests/examples.html

Duncan Temple Lang

duncantl/SVGAnnotation documentation built on May 15, 2019, 5:57 p.m.