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yyjsonr - Fast 'JSON', 'NDJSON' and 'GeoJSON' Parser and Generator

A fast 'JSON' parser, generator and validator which converts 'JSON', 'NDJSON' (Newline Delimited 'JSON') and 'GeoJSON' (Geographic 'JSON') data to/from R objects. The standard R data types are supported (e.g. logical, numeric, integer) with configurable handling of NULL and NA values. Data frames, atomic vectors and lists are all supported as data containers translated to/from 'JSON'. 'GeoJSON' data is read in as 'simple features' objects. This implementation wraps the 'yyjson' 'C' library which is available from <https://github.com/ibireme/yyjson>.

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zlib

12.30 score 167 stars 91 dependents 77 scripts 32k downloads

ggpattern - 'ggplot2' Pattern Geoms

Provides 'ggplot2' geoms filled with various patterns. Includes a patterned version of every 'ggplot2' geom that has a region that can be filled with a pattern. Provides a suite of 'ggplot2' aesthetics and scales for controlling pattern appearances. Supports over a dozen builtin patterns (every pattern implemented by 'gridpattern') as well as allowing custom user-defined patterns.

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11.98 score 394 stars 8 dependents 3.3k scripts 11k downloads

nara - Native Raster Image Tools

Native rasters are a core R image format which use a compact color representation. This color representation closely aligns with graphics device internals meaning that these images can be rendered quickly. This package provides functions to quickly create, manipulate and composite native rasters.

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gfxgraphicspkg

8.31 score 63 stars 1 dependents 52 scripts 316 downloads

emphatic - Exploratory Analysis of Tabular Data using Colour Highlighting

Tools for exploratory analysis of tabular data using colour highlighting. Highlighting is displayed in any console supporting 'ANSI' colours, and can be converted to 'HTML', 'typst', 'latex' and 'SVG'. 'quarto' and 'rmarkdown' rendering are directly supported. It is also possible to add colour to regular expression matches and highlight differences between two arbitrary R objects.

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6.82 score 145 stars 13 scripts 392 downloads

ggsvg - SVG Glyphs for Ggplot

Use SVG graphics as glyphs when plotting points with ggplot2.

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6.63 score 143 stars 99 scripts

callme - Easily Compile and Call Inline 'C' Functions

Compile inline 'C' code and easily call with automatically generated wrapper functions. By allowing user-defined headers and compilation flags (preprocessor, compiler and linking flags) the user can configure optimization options and linking to third party libraries. Multiple functions may be defined in a single block of code - which may be defined in a string or a path to a source file.

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c

6.39 score 25 stars 28 scripts 288 downloads

colorfast - Fast Conversion of R Colors to Color Component Values and Native Packed Integer Format

Color values in R are often represented as strings of hexadecimal colors or named colors. This package offers fast conversion of these color representations to either an array of red/green/blue/alpha values or to the packed integer format used in native raster objects. Functions for conversion are also exported at the 'C' level for use in other packages. This fast conversion of colors is implemented using an order-preserving minimal perfect hash derived from Majewski et al (1996) "A Family of Perfect Hashing Methods" <doi:10.1093/comjnl/39.6.547>.

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6.26 score 10 stars 11 dependents 11 scripts 806 downloads

isocubes - Voxel Data Visualization with Isometric Cubes

A voxel is a representation of a value on a regular, three-dimensional grid; it is the 3D equivalent of a 2D pixel. Voxel data can be visualised with this package using fixed viewpoint isometric cubes for each data point. This package also provides sample voxel data and tools for transforming the data.

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6.18 score 75 stars 10 scripts 231 downloads

rmonocypher - Easy Encryption of R Objects using Strong Modern Cryptography

Encrypt R objects to a raw vector or file using modern cryptographic techniques. Password-based key derivation is with 'Argon2' (<https://en.wikipedia.org/wiki/Argon2>). Objects are serialized and then encrypted using 'XChaCha20-Poly1305' (<https://en.wikipedia.org/wiki/ChaCha20-Poly1305>) which follows RFC 8439 for authenticated encryption (<https://en.wikipedia.org/wiki/Authenticated_encryption>). Cryptographic functions are provided by the included 'monocypher' 'C' library (<https://monocypher.org>).

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5.93 score 19 stars 1 dependents 4 scripts 226 downloads

tickle - Easily Build Tcl/Tk UIs

Wrap tcltk to make GUI creation easier.

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5.90 score 131 stars 11 scripts

ctypesio - Read and Write Standard 'C' Types from Files, Connections and Raw Vectors

Interacting with binary files can be difficult because R's types are a subset of what is generally supported by 'C'. This package provides a suite of functions for reading and writing binary data (with files, connections, and raw vectors) using 'C' type descriptions. These functions convert data between 'C' types and R types while checking for values outside the type limits, 'NA' values, etc.

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5.62 score 7 stars 2 dependents 6 scripts 298 downloads

lofifonts - Text Rendering with Bitmap and Vector Fonts

Alternate font rendering is useful when rendering text to novel graphics outputs where modern font rendering is not available or where bespoke text positioning is required. Bitmap and vector fonts allow for custom layout and rendering using pixel coordinates and line drawing. Formatted text is created as a data.frame of pixel coordinates (for bitmap fonts) or stroke coordinates (for vector fonts). All text can be easily previewed as a matrix or raster image. A selection of fonts is included with this package.

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5.55 score 11 stars 13 scripts 358 downloads

minipdf - PDF Document Creator

PDF is a standard file format for laying out text and images in documents. At its core, these documents are sequences of objects defined in plain text. This package allows for the creation of PDF documents at a very low level without any library or graphics device dependencies.

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pdfpkg

5.35 score 45 stars 4 scripts 314 downloads

fastpng - Read and Write PNG Files with Configurable Decoder/Encoder Options

Read and write PNG images with arrays, rasters, native rasters, numeric arrays, integer arrays, raw vectors and indexed values. This PNG encoder exposes configurable internal options enabling the user to select a speed-size tradeoff. For example, disabling compression can speed up writing PNG by a factor of 50. Multiple image formats are supported including raster, native rasters, and integer and numeric arrays at color depths of 1, 2, 3 or 4. 16-bit images are also supported. This implementation uses the 'libspng' 'C' library which is available from <https://github.com/randy408/libspng/>.

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5.30 score 20 stars 7 scripts 758 downloads

governor - Speed Limiter to Control Rate of Execution of Loops

It can be necessary to limit the rate of execution of a loop or repeated function call e.g. to show or gather data only at particular intervals. This package includes two methods for limiting this execution rate; speed governors and timers. A speed governor will insert pauses during execution to meet a user-specified loop time. Timers are alarm clocks which will indicate whether a certain time has passed. These mechanisms are implemented in 'C' to minimize processing overhead.

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5.16 score 8 stars 1 dependents 12 scripts 217 downloads

satire - Define and Solve Boolean Satisfiability ('SAT') Problems

Boolean satisifiability ('SAT') tests whether there are sets of variables which satisfy a Boolean formula. This package provides tools for defining 'SAT' problems and includes a 'DPLL'-based 'SAT' solver based upon Davis & Putnam (1960) <doi:10.1145/321033.321034>. Built-in capabilities for Tseytin transformation (Tseytin (1968) <doi:10.1007/978-3-642-81955-1_28>) allows for the input of complex Boolean formula. Cardinalility constraints are implemented using commander variables (Klieber & Kwon (2007) <https://www.cs.cmu.edu/~wklieber/papers/2007_efficient-cnf-encoding-for-selecting-1.pdf>) and sequential counters (Sinz (2005) <doi:10.1007/11564751_73>). Tools for reading and writing 'DIMACS' files are also included.

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sat

5.10 score 7 stars 2 dependents 15 scripts

insitu - By-Reference Routines for Numeric Vectors

Using by-reference semantics, functions in this package are crafted to modify the input objects in-place and avoid allocating new memory. By avoiding memory allocations (and the associated garbage colection these require), operations performed by-reference can be faster than those performed with R's default copy-on-modify semantics.

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4.57 score 37 stars 9 scripts

poissoned - Poisson Disk Sampling in 2D and 3D

Poisson disk sampling is a method of generating blue noise sample patterns where all samples are at least a specified distance apart. Poisson samples may be generated in two or three dimensions with this package. The algorithm used is an implementation of Bridson (2007) "Fast Poisson disk sampling in arbitrary dimensions" <doi:10.1145/1278780.1278807>.

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4.41 score 16 stars 32 scripts 199 downloads

flexo - Simple Tools for Lexing/Parsing Text Data

Simple tools for lexing/parsing text data.

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4.38 score 8 stars 8 scripts

bitstreamio - Read and Write Bits from Files, Connections and Raw Vectors

Bit-level reading and writing are necessary when dealing with many file formats e.g. compressed data and binary files. Currently, R connections are manipulated at the byte level. This package wraps existing connections and raw vectors so that it is possible to read bits, bit sequences, unaligned bytes and low-bit representations of integers.

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4.30 score 4 stars 4 scripts 259 downloads

xxhashlite - Extremely Fast Hashing of R Objects, Raw Data and Files using 'xxHash' Algorithms

Extremely fast hashing of R objects using 'xxHash'. R objects are hashed via the standard serialization mechanism in R. Raw byte vectors and strings can be handled directly for compatibility with hashes created on other systems. This implementation is a wrapper around the 'xxHash' 'C' library which is available from <https://github.com/Cyan4973/xxHash>.

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4.28 score 38 stars 3 scripts 265 downloads

zstdlite - Fast Compression and Serialization with 'Zstandard' Algorithm

Fast, compressed serialization of R objects using the 'Zstandard' algorithm. The included zstandard connection ('zstdfile()') can be used to read/write compressed data by any code which supports R's built-in 'connections' mechanism. Dictionaries are supported for more effective compression of small data, and functions are provided for training these dictionaries. This implementation provides an R interface to advanced features of the 'Zstandard' 'C' library (available from <https://github.com/facebook/zstd>).

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zstd

4.20 score 32 stars 7 scripts

lz4lite - Extremely Fast Compression and Serialization with LZ4

'LZ4' is an extremely fast compression standard with compression speeds of hundreds of megabytes per second, and decompression speeds of over a gigabyte per second. Use this package to compress data and serialize arbitrary objects to files or raw vectors.

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4.00 score 20 stars 7 scripts

picohdr - Read, Write and Manipulate High Dynamic Range Images

High Dynamic Range (HDR) images support a large range in luminosity between the lightest and darkest regions of an image. To capture this range, data in HDR images is often stored as floating point numbers and in formats that capture more data and channels than standard image types. This package supports reading and writing two types of HDR images; PFM (Portable Float Map) and OpenEXR images. HDR images can be converted to lower dynamic ranges (for viewing) using tone-mapping. A number of tone-mapping algorithms are included which are based on Reinhard (2002) "Photographic tone reproduction for digital images" <doi:10.1145/566654.566575>.

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4.00 score 318 downloads

rbytecode - R Byte Code Assembler/Disassembler

Assembler/Disassembler for R's byte code.

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bytecode

3.53 score 40 stars 17 scripts

rdoom - Doom

Doom.

Last updated

3.40 score 25 stars 1 scripts

tigerfb - Tiny Graphics Engine for an R Frame Buffer

A cross-platform graphics device which offers simple update via pre-rendered images with keyboard and mouse feedback.

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libglvndlibx11

3.38 score 8 stars 2 dependents 2 scripts

rectpacker - Rectangle Packing

Rectangle packing is a packing problem where rectangles are placed into a larger rectangular region (without overlapping) in order to maximise the use of space. Rectangles are packed using the skyline heuristic as discussed in Lijun et al (2011) "A Skyline-Based Heuristic for the 2D Rectangular Strip Packing Problem" <doi:10.1007/978-3-642-21827-9_29>. A function is also included for determining a good small-sized box for containing a given set of rectangles.

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3.30 score 4 stars 3 scripts 153 downloads

cryptorng - Access System Cryptographic Pseudorandom Number Generators

Generate random numbers from the Cryptographically Secure Pseudorandom Number Generator (CSPRNG) provided by the underlying operating system. System CSPRNGs are seeded internally by the OS with entropy it gathers from the system hardware. The following system functions are used: arc4random_buf() on macOS and BSD; BCryptgenRandom() on Windows; Sys_getrandom() on Linux.

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3.00 score 2 stars 3 scripts 312 downloads

serializer - Expose R's Serialization Interface

Expose R's serialization interface for serialing/unserializing R objects to/from raw vectors and connections.

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2.81 score 13 stars 7 scripts