Examples: visualization, C++, networks, data cleaning, html widgets, ropensci.

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jsonlite — by Jeroen Ooms, a year ago

A Robust, High Performance JSON Parser and Generator for R

A fast JSON parser and generator optimized for statistical data and the web. Started out as a fork of 'RJSONIO', but has been completely rewritten in recent versions. The package offers flexible, robust, high performance tools for working with JSON in R and is particularly powerful for building pipelines and interacting with a web API. The implementation is based on the mapping described in the vignette (Ooms, 2014). In addition to converting JSON data from/to R objects, 'jsonlite' contains functions to stream, validate, and prettify JSON data. The unit tests included with the package verify that all edge cases are encoded and decoded consistently for use with dynamic data in systems and applications.

RMySQL — by Jeroen Ooms, a year ago

Database Interface and 'MySQL' Driver for R

A 'DBI' interface to 'MySQL' / 'MariaDB'. The 'RMySQL' package contains an old implementation based on legacy code from S-PLUS which being phased out. A modern 'MySQL' client based on 'Rcpp' is available from the 'RMariaDB' package on 'Github': < https://github.com/rstats-db/RMariaDB>.

V8 — by Jeroen Ooms, a year ago

Embedded JavaScript Engine for R

An R interface to Google's open source JavaScript engine. V8 is written in C++ and implements ECMAScript as specified in ECMA-262, 5th edition. In addition, this package implements typed arrays as specified in ECMA 6 used for high-performance computing and libraries compiled with 'emscripten'.

curl — by Jeroen Ooms, 8 months ago

A Modern and Flexible Web Client for R

The curl() and curl_download() functions provide highly configurable drop-in replacements for base url() and download.file() with better performance, support for encryption (https, ftps), gzip compression, authentication, and other 'libcurl' goodies. The core of the package implements a framework for performing fully customized requests where data can be processed either in memory, on disk, or streaming via the callback or connection interfaces. Some knowledge of 'libcurl' is recommended; for a more-user-friendly web client see the 'httr' package which builds on this package with http specific tools and logic.

jsonld — by Jeroen Ooms, a year ago

JSON for Linking Data

JSON-LD is a light-weight syntax for expressing linked data. It is primarily intended for web-based programming environments, interoperable web services and for storing linked data in JSON-based databases. This package provides bindings to the JavaScript library for converting, expanding and compacting JSON-LD documents.

unix — by Jeroen Ooms, a year ago

Unix System Utilities

Bindings to system utilities found in most Unix systems such as POSIX functions which are not part of the Standard C Library.

magick — by Jeroen Ooms, 8 months ago

Advanced Graphics and Image-Processing in R

Bindings to 'ImageMagick': the most comprehensive open-source image processing library available. Supports many common formats (png, jpeg, tiff, pdf, etc) and manipulations (rotate, scale, crop, trim, flip, blur, etc). All operations are vectorized via the Magick++ STL meaning they operate either on a single frame or a series of frames for working with layers, collages, or animation. In RStudio images are automatically previewed when printed to the console, resulting in an interactive editing environment. The latest version of the package includes a native graphics device for creating in-memory graphics or drawing onto images using pixel coordinates.

rsvg — by Jeroen Ooms, a year ago

Render SVG Images into PDF, PNG, PostScript, or Bitmap Arrays

Renders vector-based svg images into high-quality custom-size bitmap arrays using 'librsvg2'. The resulting bitmap can be written to e.g. png, jpeg or webp format. In addition, the package can convert images directly to various formats such as pdf or postscript.

antiword — by Jeroen Ooms, a year ago

Extract Text from Microsoft Word Documents

Wraps the 'AntiWord' utility to extract text from Microsoft Word documents. The utility only supports the old 'doc' format, not the new xml based 'docx' format. Use the 'xml2' package to read the latter.

cld2 — by Jeroen Ooms, a year ago

Google's Compact Language Detector 2

Bindings to Google's C++ library Compact Language Detector 2 (see < https://github.com/cld2owners/cld2#readme> for more information). Probabilistically detects over 80 languages in plain text or HTML. For mixed-language input it returns the top three detected languages and their approximate proportion of the total classified text bytes (e.g. 80% English and 20% French out of 1000 bytes). There is also a 'cld3' package on CRAN which uses a neural network model instead.