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fasterize - Fast Polygon to Raster Conversion

Provides a drop-in replacement for rasterize() from the 'raster' package that takes polygon vector or data frame objects, and is much faster. There is support for the main options provided by the rasterize() function, including setting the field used and background value, and options for aggregating multi-layer rasters. Uses the scan line algorithm attributed to Wylie et al. (1967) <doi:10.1145/1465611.1465619>. Note that repository originally was hosted at 'Github' 'ecohealthalliance/fasterize' but was migrated to 'hypertidy/fasterize' in March 2025, and can be found indexed on 'R universe' <https://cran.r-universe.dev/fasterize>.

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rasterrcpprcpparmadillosfspatialcpp

11.27 score 187 stars 11 dependents 1.5k scripts 1.7k downloads

vapour - Access to the 'Geospatial Data Abstraction Library' ('GDAL')

Provides low-level access to 'GDAL' functionality. 'GDAL' is the 'Geospatial Data Abstraction Library' a translator for raster and vector geospatial data formats that presents a single raster abstract data model and single vector abstract data model to the calling application for all supported formats <https://gdal.org/>. This package is focussed on providing exactly and only what GDAL does, to enable developing further tools.

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cppgdalgdal-apicpp

9.71 score 90 stars 5 dependents 84 scripts 398 downloads

PROJ - Generic Coordinate System Transformations Using 'PROJ'

A wrapper around the generic coordinate transformation software 'PROJ' that transforms coordinates from one coordinate reference system ('CRS') to another. This includes cartographic projections as well as geodetic transformations. The intention is for this package to be used by user-packages such as 'reproj', and that the older 'PROJ.4' and version 5 pathways be provided by the 'proj4' package.

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proj

9.58 score 16 stars 15 dependents 137 scripts 1.6k downloads

geojson - Classes for 'GeoJSON'

Classes for 'GeoJSON' to make working with 'GeoJSON' easier. Includes S3 classes for 'GeoJSON' classes with brief summary output, and a few methods such as extracting and adding bounding boxes, properties, and coordinate reference systems; working with newline delimited 'GeoJSON'; and serializing to/from 'Geobuf' binary 'GeoJSON' format.

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geojsongeospatialconversiondatainput-outputbboxpolygongeobufcrsndgeojsonspatial

9.34 score 32 stars 14 dependents 4.0k downloads

ncmeta - Straightforward 'NetCDF' Metadata

Extract metadata from 'NetCDF' data sources, these can be files, file handles or servers. This package leverages and extends the lower level functions of the 'RNetCDF' package providing a consistent set of functions that all return data frames. We introduce named concepts of 'grid', 'axis' and 'source' which are all meaningful entities without formal definition in the 'NetCDF' library <https://www.unidata.ucar.edu/software/netcdf>. 'RNetCDF' matches the library itself with only the named concepts of 'variables', 'dimensions' and 'attributes'.

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8.22 score 13 stars 13 dependents 202 scripts 5.3k downloads

trip - Tracking Data

Access and manipulate spatial tracking data, with straightforward coercion from and to other formats. Filter for speed and create time spent maps from tracking data. There are coercion methods to convert between 'trip' and 'ltraj' from 'adehabitatLT', and between 'trip' and 'psp' and 'ppp' from 'spatstat'. Trip objects can be created from raw or grouped data frames, and from types in the 'sp', sf', 'amt', 'trackeR', 'mousetrap', and other packages, Sumner, MD (2011) <https://figshare.utas.edu.au/articles/thesis/The_tag_location_problem/23209538>.

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7.99 score 12 stars 2 dependents 150 scripts 684 downloads

tidync - Tidy Approach to 'NetCDF' Data Exploration and Extraction

Tidy tools for 'NetCDF' data sources. Explore the contents of a 'NetCDF' source (file or URL) presented as variables organized by grid with a database-like interface. The hyper_filter() interactive function translates the filter value or index expressions to array-slicing form. No data is read until explicitly requested, as a data frame or list of arrays via hyper_tibble() or hyper_array().

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7.90 score 94 stars 4 dependents 5 scripts 853 downloads

decido - Bindings for 'Mapbox' Ear Cutting Triangulation Library

Provides constrained triangulation of polygons. Ear cutting (or ear clipping) applies constrained triangulation by successively 'cutting' triangles from a polygon defined by path/s. Holes are supported by introducing a bridge segment between polygon paths. This package wraps the 'header-only' library 'earcut.hpp' <https://github.com/mapbox/earcut.hpp> which includes a reference to the method used by Held, M. (2001) <doi:10.1007/s00453-001-0028-4>.

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cpp

7.87 score 16 stars 16 dependents 21 scripts 1.5k downloads

vaster - Tools for Raster Grid Logic

Provides raster grid logic, operations that describe a discretized rectangular domain and do not require access to materialized data. Grids are arrays with dimension and extent, and many operations are functions of dimension only: number of columns, number of rows, or they are a combination of the dimension and the extent the range in x and the range in y in that order. Here we provide direct access to this logic without need for connection to any materialized data or formats. Grid logic includes functions that relate the cell index to row and column, or row and column to cell index, row, column or cell index to position. These methods are described in Loudon, TV, Wheeler, JF, Andrew, KP (1980) <doi:10.1016/0098-3004(80)90015-1>, and implementations were in part derived from Hijmans R (2024) <doi:10.32614/CRAN.package.terra>.

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raster

7.73 score 8 stars 4 dependents 45 scripts 315 downloads

silicate - Common Forms for Complex Hierarchical and Relational Data Structures

Generate common data forms for complex data suitable for conversions and transmission by decomposition as paths or primitives. Paths are sequentially-linked records, primitives are basic atomic elements and both can model many forms and be grouped into hierarchical structures. The universal models 'SC0' (structural) and 'SC' (labelled, relational) are composed of edges and can represent any hierarchical form. Specialist models 'PATH', 'ARC' and 'TRI' provide the most common intermediate forms used for converting from one form to another. The methods are inspired by the simplicial complex <https://en.wikipedia.org/wiki/Simplicial_complex> and provide intermediate forms that relate spatial data structures to this mathematical construct.

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hierarchical-datasimplicial-complexspatial-datastructural-primitivestopologytriangulation

7.31 score 55 stars 7 dependents 117 scripts 368 downloads

silicate - Common Forms for Complex Hierarchical and Relational Data Structures

Generate common data forms for complex data suitable for conversions and transmission by decomposition as paths or primitives. Paths are sequentially-linked records, primitives are basic atomic elements and both can model many forms and be grouped into hierarchical structures. The universal models 'SC0' (structural) and 'SC' (labelled, relational) are composed of edges and can represent any hierarchical form. Specialist models 'PATH', 'ARC' and 'TRI' provide the most common intermediate forms used for converting from one form to another. The methods are inspired by the simplicial complex <https://en.wikipedia.org/wiki/Simplicial_complex> and provide intermediate forms that relate spatial data structures to this mathematical construct.

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hierarchical-datasimplicial-complexspatial-datastructural-primitivestopologytriangulation

7.31 score 55 stars 7 dependents 117 scripts 281 downloads

geographiclib - Access to 'GeographicLib'

Bindings to the 'GeographicLib' C++ library <https://geographiclib.sourceforge.io/> for precise geodetic calculations including geodesic computations (distance, bearing, paths, intersections), map projections (UTM/UPS, Transverse Mercator, Lambert Conformal Conic, and more), grid reference systems (MGRS, Geohash, GARS, Georef), coordinate conversions (geocentric, local Cartesian), and polygon area on the WGS84 ellipsoid. All functions are fully vectorized.

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cpp

7.15 score 9 stars 3 dependents 10 scripts 780 downloads

palr - Colour Palettes for Data

Colour palettes for data, based on some well known public data sets. Includes helper functions to map absolute values to known palettes, and capture the work of image colour mapping as raster data sets.

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7.07 score 3 stars 4 dependents 59 scripts 2.8k downloads

quadmesh - Quadrangle Mesh

Create surface forms from matrix or 'raster' data for flexible plotting and conversion to other mesh types. The functions 'quadmesh' or 'triangmesh' produce a continuous surface as a 'mesh3d' object as used by the 'rgl' package. This is used for plotting raster data in 3D (optionally with texture), and allows the application of a map projection without data loss and many processing applications that are restricted by inflexible regular grid rasters. There are discrete forms of these continuous surfaces available with 'dquadmesh' and 'dtriangmesh' functions.

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7.05 score 27 stars 1 dependents 69 scripts 479 downloads

tabularaster - Tidy Tools for 'Raster' Data

Facilities to work with vector and raster data in efficient repeatable and systematic work flow. Missing functionality in existing packages is included here to allow extraction from raster data with 'simple features' and 'Spatial' types and to make extraction consistent and straightforward. Extract cell numbers from raster data and return the cells as a data frame rather than as lists of matrices or vectors. The functions here allow spatial data to be used without special handling for the format currently in use.

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6.92 score 48 stars 87 scripts 255 downloads

ceramic - Download Online Imagery Tiles

Download imagery tiles to a standard cache and load the data into raster objects. Facilities for 'AWS' terrain <https://registry.opendata.aws/terrain-tiles/> terrain and 'Mapbox' <https://www.mapbox.com/> servers are provided.

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6.60 score 95 stars 167 scripts 253 downloads

graticule - Meridional and Parallel Lines for Maps

Create graticule lines and labels for maps. Control the creation of lines or tiles by setting their placement (at particular meridians and parallels) and extent (along parallels and meridians). Labels are created independently of lines.

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6.46 score 17 stars 1 dependents 114 scripts 311 downloads

ximage - Draw Images of Raster Data and Related Adornments

Draw images easily, set up a plot with an image, specify where that image should be placed. Image plot by default reflects the index of the image data itself, or can be specified in simple extent terms 'xmin,xmax,ymin,ymax'. Numeric matrices, integer arrays, byte arrays, character arrays, and native rasters are supported. Flat vectors are supported in a limited sense with a heuristic to guess at the likely dimensionality and some helpers. A combination of image() and rasterImage() from the 'graphics' package with their good features in one place.

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6.24 score 9 stars 24 scripts 159 downloads

lazysf - Delayed Read for 'GDAL' Vector Data Sources

Lazy read for drawings. A 'dplyr' back end for data sources supported by 'GDAL' vector drivers, that allows working with local or remote sources as if they are in-memory data frames. Basic features work with any drawing format ('GDAL vector data source') supported by the 'gdalraster' package.

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spatial-gdal-sf-dbi

5.94 score 29 stars 10 scripts 247 downloads

controlledburn - Sparse Polygon Rasterization with Exact Coverage Fractions

Rasterize polygons without materializing any pixel values. Computes exact coverage fractions for polygon-grid intersections and returns results in a sparse two-table format: run-length encoded interior cells and individually weighted boundary cells. The scanline algorithm is O(perimeter) in both time and memory. Uses the exactextract algorithm by Daniel Baston, vendored from the 'exactextractr' package. Derived from the 'fasterize' package by Noam Ross.

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compressionlazypolygonsrastercpp

5.94 score 18 stars 20 scripts

reproj - Coordinate System Transformations for Generic Map Data

Transform coordinates from a specified source to a specified target map projection. This uses the 'PROJ' library directly, via the 'PROJ' package. The 'reproj()' function is generic, methods may be added to remove the need for an explicit source definition. This is for use primarily to transform generic data formats and direct leverage of the underlying 'PROJ' library. (There are transformations that aren't possible with 'PROJ' and that are provided by the 'GDAL' library, a limitation which users of this package should be aware of.) The 'PROJ' library is available at <https://proj.org/>.

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5.91 score 3 stars 13 dependents 47 scripts 1.5k downloads

textures - Quad Mesh Primitives and Texture Mapping for Grids

Generate quad mesh primitives from the compact specification of a regular grid, its dimension and extent. Provides fast generation of mesh indexes and vertices, an unexpanded intermediate form (the grid edge coordinates), and a compact serializable specification for meshes that are generated on demand. Meshes are 'mesh3d' objects as used by the 'rgl' package, constructed without requiring any graphics engine, with support for texture mapping (Heckbert (1986) <doi:10.1109/MCG.1986.276672>) where an image is draped over a mesh whose density is independent of the image resolution. A C++ header library is installed so that other packages may generate mesh components via 'LinkingTo'.

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cpp

5.90 score 11 stars 2 dependents 12 scripts 243 downloads

wkpool - Vertex Pool Topology for Well-Known Geometry

Establishes and maintains vertex pool topology for geometry handled by 'wk'. Segments are the atomic unit, vertices are shared via integer references into a pool. Topology is made discoverable via coincident vertex detection while not requiring modification of the input data. Topological data models follow principles described in Worboys and Duckham (2004, ISBN:978-0415283755). The edge-based topology geometry decomposed into vertices and directed edge pairs is a simplification of the quad-edge case in Guibas & Stolfi (1985) <doi:10.1145/282918.282923>.

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cpp

5.48 score 6 stars 6 scripts 103 downloads

crsmeta - Extract Coordinate System Metadata

Obtain coordinate system metadata from various data formats. There are functions to extract a 'CRS' (coordinate reference system, <https://en.wikipedia.org/wiki/Spatial_reference_system>) in 'EPSG' (European Petroleum Survey Group, <http://www.epsg.org/>), 'PROJ4' <https://proj.org/>, or 'WKT2' (Well-Known Text 2, <http://docs.opengeospatial.org/is/12-063r5/12-063r5.html>) forms. This is purely for getting simple metadata from in-memory formats, please use other tools for out of memory data sources.

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5.31 score 6 stars 22 dependents 4 scripts 1.0k downloads

unjoin - Separate a Data Frame by Normalization

Separate a data frame in two based on key columns. The function unjoin() provides an inside-out version of a nested data frame. This is used to identify duplication and normalize it (in the database sense) by linking two tables with the redundancy removed. This is a basic requirement for detecting topology within spatial structures that has motivated the need for this package as a building block for workflows within more applied projects.

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5.16 score 12 stars 8 dependents 259 downloads

anglr - Mesh Topology and Visualization for Spatial Data

Gives direct access to generic 3D tools and provides a full suite of mesh-creation and 3D plotting functions. By extending the 'rgl' package conversion and visualization functions for the 'mesh3d' class a wide variety of complex spatial data can be brought into 3D scenes. These tools allow for spatial raster, polygons, and lines that are common in 'GIS' contexts to be converted into mesh forms with high flexibility and the ability to integrate disparate data types. Vector and raster data can be seamlessly combined as meshes, and surfaces can be set to have material properties based on data values or with image textures. Textures and other data combinations use projection transformations to map between coordinate systems, and objects can be easily visualized in an interactive scene at any stage. This package relies on the 'RTriangle' package for high-quality triangular meshing which is licensed restrictively under 'CC BY-NC-SA 4.0'.

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5.14 score 84 stars 110 scripts 9 downloads

affinity - Raster Georeferencing, Grid Affine Transforms, Cell Abstraction

Tools for raster georeferencing, grid affine transforms, and general raster logic. These functions provide converters between raster specifications, world vector, geotransform, 'RasterIO' window, and 'RasterIO window' in 'sf' package list format. There are functions to offset a matrix by padding any of four corners (useful for vectorizing neighbourhood operations), and helper functions to harvesting user clicks on a graphics device to use for simple georeferencing of images. Methods used are available from <https://en.wikipedia.org/wiki/World_file> and <https://gdal.org/user/raster_data_model.html>.

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4.85 score 14 stars 8 scripts 379 downloads

dsn - Data Source Name and Description Helpers for Use with 'GDAL'

Simple helpers for 'GDAL' data source names ('DSN'), prefix and suffix and other handling. 'GDAL' is the Geospatial Data Abstraction Library <https://gdal.org/>, not used by this package directly.

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4.75 score 7 stars 3 dependents 18 scripts 136 downloads

sfdct - Constrained Triangulation for Simple Features

Build a constrained high quality Delaunay triangulation from simple features objects, applying constraints based on input line segments, and triangle properties including maximum area, minimum internal angle. The triangulation code in 'RTriangle' uses the method of Cheng, Dey and Shewchuk (2012, ISBN:9781584887300). For a low-dependency alternative with low-quality path-based constrained triangulation see <https://CRAN.R-project.org/package=decido> and for high-quality configurable triangulation see <https://github.com/hypertidy/anglr>. Also consider comparison with the 'GEOS' lib which since version 3.10.0 includes a low quality polygon triangulation method that starts with ear clipping and refines to Delaunay.

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4.73 score 3 stars 36 scripts 244 downloads

sds - Spatial Data Sources

Functions for descriptions of spatial data sources that can be read directly with or without download. Most sources are readable by 'GDAL' software. There are functions for imagery, elevation, and a variety of easily accessible data streams including image tile servers, links to online files, and geographic data services.

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4.68 score 8 stars 2 dependents 20 scripts

whatarelief - Get topography elevation and online imagery data

Obtain elevation data, topography relief for any region on the Earth. Topography and bathymetry data is supported by default. Sensible defaults exist for usage, with a matrix of entire planet topography(and bathymetry) returned. The geographic extent can be modified (from whole-planet) to a simple region in longitude/latitude by 'xmin,xmax,ymin,ymax' range, or by specifying a grid exactly with extent, dimension, projection in generic or spatial formats ('terra' or 'raster'). Online sources for data are used, 'GEBCO' General Bathymetric Chart of the Oceans (GEBCO) as a background (to ~500m resolution), and Copernicus GLO-30 Digital Elevation Model for higher resolution (to ~30m resolution). Custom source/s of topography may be input to override defaults, links to file/s or URLs as required.

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cloudonlinerasterspatial

4.49 score 52 stars 12 scripts

tissot - Tissot Indicatrix for Map Projection Distortion

Compute and visualize the 'Tissot Indicatrix' for map projections. The indicatrix characterizes projection distortion by computing scale factors, angular deformation, areal distortion, and convergence at arbitrary points. Based on the calculations shared by Bill Huber on <https://gis.stackexchange.com/a/5075/482>. Uses 'PROJ' for coordinate transformation and distortion factor computation. Developed using the method published in Snyder, JP (1987) <doi:10.3133/pp1395>.

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4.43 score 18 stars 5 scripts 166 downloads

tripEstimation - Metropolis Sampler and Supporting Functions for Estimating Animal Movement from Archival Tags and Satellite Fixes

Data handling and estimation functions for animal movement estimation from archival or satellite tags. Helper functions are included for making image summaries binned by time interval from Markov Chain Monte Carlo simulations.

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4.19 score 4 stars 13 scripts 236 downloads

area - Calculate Area of Triangles and Polygons

Calculate the area of triangles and polygons using the shoelace formula. Area may be signed, taking into account path orientation, or unsigned, ignoring path orientation. The shoelace formula is described at <https://en.wikipedia.org/wiki/Shoelace_formula>.

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cpp

3.93 score 13 stars 13 scripts 218 downloads

lazyraster - Generate Raster Data Lazily from 'GDAL'

Read raster data at a specified resolution on-demand via 'GDAL' (the Geospatial Data Abstraction Library <https://gdal.org/>). Augments the 'raster' package by never reading data from a raster source until necessary for generating an in-memory 'raster' object. A 'lazyraster' object may be cropped and converted to 'raster' object, and by default will only read a small amount of data sufficient for an overall summary. The amount of data read can be controlled by specifying the output dimensions.

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3.59 score 27 stars 29 scripts 7 downloads

zaro - Zarr via Arrow

Low-level Zarr interface (V2 and V3) built on Arrow filesystem and codec infrastructure. Provides direct access to Zarr stores on local filesystems, S3, and GCS via Arrow, with fallback to GDAL virtual filesystems for HTTP and other protocols via gdalraster. Supports Kerchunk JSON and Parquet reference stores for virtual Zarr access to existing archives. Automatically detects Zarr version and handles S3 region redirects.

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3.44 score 11 stars 6 scripts

ffraster - Native Raster Files

Provides a loose couplings between the facilities of `raster` and `ff`, to allow a file-backed raster grid to be modified as if it were an array in memory.

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3.40 score 5 stars 10 scripts

location - Geocode Place Names via Nominatim

A minimal interface to the Nominatim geocoding API (OpenStreetMap). Converts place name strings to coordinates and returns structured results. Designed to be used by other packages that need lightweight geocoding.

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3.22 score 334 scripts

rustycogs - TIFF Virtualization and Decoding via Rust

Extract byte-range chunk references from cloud-hosted TIFF and COG files without reading pixel data. Uses the Rust 'async-tiff' and 'object_store' crates for async I/O across S3, GCS, Azure, HTTP, and local storage. Returns a data frame of tile offsets and metadata suitable for constructing Kerchunk or Zarr virtual stores.

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rustcargo

3.18 score 6 stars 9 scripts

readwfs - Read Vector Features from Web Feature Services and Friends

Read vector features from OGC Web Feature Services (WFS), OGC API Features (OAPIF), and ArcGIS REST FeatureServer/MapServer endpoints. Uses GDAL's OGR vector drivers via 'gdalraster' for connection handling and returns tibbles with 'wk' geometry columns. Provides service discovery, layer listing, capability inspection, and bbox-filtered feature retrieval. Aims to make navigating public vector web services less painful.

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3.18 score 3 stars 4 scripts

cmemsarco - Cloud-Native Access to Copernicus Marine ARCO Zarr Stores

Build and query a catalog of Copernicus Marine Service (CMEMS) Analysis-Ready Cloud-Optimized (ARCO) Zarr datasets. Provides GDAL-ready data source names for direct access to 'timeChunked' and 'geoChunked' Zarr stores without file downloads or directory listings. Default DSNs use '/vsicurl/' for zero-configuration access. Catalog is built by walking the CMEMS STAC API at <https://stac.marine.copernicus.eu>.

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3.18 score 1 stars

guerrilla - Illustrate Various Methods of Interpolation for Irregular Data

Examples of interpolating irregular data, to illustrate the mechanics of various methods and some easy tools to run them.

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3.15 score 14 stars 4 scripts

grout - Abstract Raster Tiling Schemes

Impose a tiling scheme on a raster grid defined by its dimension and extent. Computes tile counts, pixel offsets (suitable for spatial library windowed reads), and geographic extents for each tile. Also supports standard Web Mercator and geodetic tiling profiles with zoom levels, and provides a spatial map of what each chunk covers for interrogating virtual raster stores. Based on the analysis of Lamb (1994, ISBN-13: 978-0748403158) "Tiling very large rasters" in 'Advances in GIS Research: Proceedings of the Sixth International Symposium on Spatial Data Handling', volume 1, pages 449-461.

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3.08 score 8 stars 1 dependents 7 scripts

isoraster - Create Contour Lines and Contour Polygons from a Raster

Creates nice smooth 'marching squares' contour lines and polygons.

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2.65 score 9 stars 4 scripts

scgraph - Common Forms for Graph Structures

Provides support for the 'silicate' common form data structure for igraph.

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edgesigraphsc-form

2.62 score 7 stars 12 scripts

timenow - Quick Timezone-Aware Timestamps

Simple helpers to report the current time in UTC and your local timezone, with sensible detection heuristics when the system timezone is UTC. Supports fuzzy matching of timezone names like "Perth Australia".

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2.60 score 4 stars 7 scripts

polymer - Flexible and Intuitive Overlay Methods

General intersections via a triangle pool from disparate polygon inputs. Overlap is determined via finite-element decomposition of all component edges in all inputs into triangles. Then triangles instances are classified (by point-in-polygon lookup) by objects within layers.

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2.54 score 7 stars 3 scripts

topography - Provide Some Straightforward Configuration Sources to Online Topography Data

Provides a list of some online data sources for topography (elevation, bathymetry) data and adds augmentation required for use by spatial tools.

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2.40 score 5 stars 10 scripts

scdb - Database Backend for Common Form Data

Creates a database backend from `silicate` data.

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2.38 score 3 stars 16 scripts

L3bin - Integerized Sinusoidal Binning Scheme for Level 3 Data

The NASA Ocean Biology processing Group L3 bin scheme, based on the sinusoidal map projection. Psuedo code for the binning scheme was published in Appendix A of NASA Technical Memorandum 104566, Vol. 32., listed in URL.

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2.30 score 4 stars 2 scripts

filearchy - Write Imagery to Tiles

Create directory structure of image tiles.

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gdalpngrastertiles

2.30 score 4 stars 2 scripts

quad - Intermediate Forms of Raster Grids

Raster grids and quads as first class types with helpers. Provides a low level API for generating mesh index and vertices from the simplest abstraction of raster grid, input dimension and (optionally) extent to generate components of meshes for downstream visualization and efficient coordinate transformation. API functions may be 'Linked To' in the R headers library way.

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gridmeshquadrastercpp

2.30 score 1 stars 4 scripts 3 downloads

gdalwebsrv - GDAL Imagery Services 'GDAL_WMS' (Web Map Services)

Provide imagery services via GDAL's Web Map Services. <https://gdal.org/drivers/raster/wms.html>

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2.30 score 4 stars 1 scripts

vtkr - Read a Limited Subset of Visualization Toolkit Formats

Read some VTK formats. VTK is the Visualization Toolkit <https://en.wikipedia.org/wiki/VTK>.

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2.30 score 4 stars 3 scripts

rearcut - Constrained Triangulation of Polygons by 'Ear Clipping/Cutting'

Constrained triangulation of polygons implemented by the 'Mapbox' 'Javascript' library 'earcut'.

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2.30 score 4 stars 4 scripts

grout - Abstract Raster Tiling Schemes

Impose a tiling scheme on a raster grid defined by its dimension and extent. Computes tile counts, pixel offsets (suitable for spatial library windowed reads), and geographic extents for each tile. Also supports standard Web Mercator and geodetic tiling profiles with zoom levels, and provides a spatial map of what each chunk covers for interrogating virtual raster stores. Based on the analysis of Lamb (1994, ISBN-13: 978-0748403158) "Tiling very large rasters" in 'Advances in GIS Research: Proceedings of the Sixth International Symposium on Spatial Data Handling', volume 1, pages 449-461.

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2.18 score 1 dependents 7 scripts

vsils - Scan 'CRAN' Packages for 'GDAL'-Readable Files

Queries a package source tarball directly from CRAN (via 'GDAL' virtual file system) and identifies files that 'GDAL' can read. No package or file download is required.

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2.18 score 1 stars 4 scripts

wince - Write NetCDF Files for the Obvious Situations

Create a 3D 'NetCDF' with time or depth as the third dimension, and convention-conforming coordinate system metadata. Eventually we'll set this up to write slice by slice which is easy once the file is instantiated, but atm it's purely an experiment. We might include capability to create 4D ones too.

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2.18 score 3 stars 3 scripts

granulated - Define Rectangular Regions with Granularity

A granule is a rectangular extent with an implied discretization. The default granularity is 1x1, the range is a whole divisor of itself. This is the general concept of a raster, a rectangular window with discretization. The common extent or bounding box concept can be thought of as the degenerate case (1x1).

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2.18 score 3 stars 1 scripts

activate - Activate to Determine the Context of Subsequent Manipulations

A simple context-controlling mechanism to 'activate' a named sub-entity in an object. The generic functions are provided with bare default methods. It is expected that other packages will import the generic and specialize it.

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2.18 score 1 stars 1 dependents 4 scripts

bigcurve - Adaptive Densifying of Lines

Densify lines adaptively, as required by the curvature a map projection imposes on them. Vertices are inserted along great circle arcs only where the projected curve deviates from a straight chord by more than a tolerance, following the adaptive resampling scheme of 'd3-geo' by Mike Bostock.

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projcpp

2.00 score 2 stars 4 scripts

plover - What the Package Does (One Line, Title Case)

Point in polygon.

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cpp

2.00 score 2 stars 1 scripts

pfft - What the Package Does (one line, title case)

What the package does (one paragraph).

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2.00 score 2 stars 3 scripts

gdalblock - Block-Based Access to GDAL Raster Datasets

Provides an S7 class for block-based (tiled) access to raster datasets via GDAL. Wraps 'gdalraster' to expose block structure and efficient block-level reading.

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1.70 score 1 stars

earthcircle - Create Those Geographic Circles

Create geographic circles, note this is not the Tissot Inidicatrix see hypertidy/tissot for that.

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1.70 score 1 stars 2 scripts

xisoband - Light Wrapper of 'isoband' to do it the Hypertidy Way

Provide use of isoband package using matrix and extent like 'rasterImage', rather than degenerate rectilinear coordinates (like old R image/matlab/netcdf).

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1.70 score 1 stars 2 scripts

gridcol - Gridded Vectors

Vectors for cell indexes from raster grids.

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1.70 score 1 stars 3 scripts

tidyff - Create Native raster Files With ff

Couplings between raster and ff files.

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1.70 score 1 stars 6 scripts

CMIP5files - What the Package Does (one line, title case)

What the package does (one paragraph).

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1.70 score

cells - Grid Logic

Grid logic for rasters. Grid logic involves a rectangular extent and a 'grain', the discretization of that extent into rectangular cells. This logic exists in several packages but here is intended to be completely independent of data usage.

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1.36 score 1 stars 23 scripts

starc - A Provider-Agnostic STAC Reference Cache

Harvests SpatioTemporal Asset Catalog (STAC) discovery results into an append-only Parquet reference store: queries, acquisitions, products, and assets as separate levels, with all asset references recorded verbatim and no fixed band vocabulary. Markers and coverage are derived views, never stored state. Stores references, never pixels.

Last updated

1.30 score 2 stars 1 scripts

mgrsrev - What the Package Does (One Line, Title Case)

What the package does (one paragraph).

Last updated

1.00 score
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