manuelbieh/geolib
Geolib
Geolib est une bibliothèque de calcul géospatial et un outil d'analyse de points. Elle fournit une collection d'utilitaires pour calculer les distances, les azimuts et les zones entre les coordonnées, ainsi que pour convertir les mesures géographiques et les formats de coordonnées.
La bibliothèque dispose d'un parseur de géométrie Well-Known Text pour convertir les chaînes WKT en structures de coordonnées pour l'analyse de polygones. Elle inclut des outils spécialisés pour le geofencing et la contention de points, permettant de déterminer si une coordonnée tombe dans un polygone défini ou un rayon spécifié.
Le toolkit couvre de larges domaines de capacités, incluant l'analyse de proximité de localisation, le calcul d'azimut de navigation et la transformation de données. Il peut calculer des points centraux, déterminer des boîtes englobantes et trier les coordonnées par proximité pour identifier les voisins les plus proches.
La bibliothèque fournit également des utilitaires pour valider les coordonnées et traduire les distances, zones et vitesses entre différentes unités standard métriques et impériales.
Features
- Geospatial Calculations - Provides a comprehensive suite of mathematical functions for calculating distances, bearings, and spatial relationships on geographic coordinates.
- Coordinate Distance Calculation - Provides high-accuracy distance calculations between geographic coordinates using the Haversine formula to account for Earth's curvature.
- WKT and WKB Serialization - Converts Well-Known Text strings into usable coordinate structures to represent shapes and polygons.
- Point-in-Polygon Detection - Determines if a coordinate is inside a polygon by counting intersections of a ray with the polygon's edges.
- Proximity Verifications - Verifies if a specific coordinate point falls within a defined radius of another point.
- Point Containment Checks - Verifies if a specific coordinate lies within a defined polygon or within a specified radius.
- Geofencing - Checks if a specific coordinate falls within a defined polygon or within a set radius of another point.
- Coordinate Format Conversions - Maps numerical latitude and longitude values between decimal degrees and degrees-minutes-seconds formats.
- Coordinate Format Transformations - Transforms coordinates between decimal and sexagesimal representations for human readability.
- Geospatial Point Analysis - Implements functions for determining point containment, proximity, and calculating bounding boxes for sets of coordinates.
- Location Proximity Analysis - Sorts lists of coordinates by distance to find the nearest neighbors or the center of a group.
- Navigation Bearing Calculations - Determines the compass direction between two points or calculates a destination based on a bearing and distance.
- Spherical Bearing Calculations - Determines the compass direction between two points using spherical trigonometry.
- Travel Speed Imputers - Determines the speed of travel between two coordinates based on the time elapsed between them.
- Nearest Neighbor Analysis - Sorts a list of coordinates by distance to a reference point to identify the nearest neighbors.
- Path Measurement Utilities - Calculates the total length of a path connecting multiple coordinates or the surface area of a polygon.
- Bounding Box Calculations - Provides utilities to calculate the bounding box enclosing a set of geographic coordinates.
- Point-to-Polygon Transformation - Converts WKT strings into coordinate arrays to represent polygon shapes.
- Compass Heading Calculation - Identifies the cardinal direction from one coordinate point to another using bearing calculations.
- Cardinal Direction Mapping - Converts numeric degree headings into human-readable compass directions.
- Destination Point Calculators - Determines the coordinates of a destination given a starting point, distance, and bearing.
- Point-to-Line Distance Calculations - Computes the shortest distance between a specific point and a line defined by two coordinates.
- Measurement Unit Converters - Provides utilities for translating distances, areas, and speeds between different metric and imperial standard units.
- Travel Speed Calculators - Calculates travel speed between timed coordinates and converts results into units like mph or kmh.
- WKT Geometry Parsers - A tool for converting Well-Known Text strings into coordinate structures to represent and analyze polygon shapes.
- Proximity Search - Orders a list of coordinates by their distance to a reference point to find the closest locations.
- Geospatial Distance Calculations - Provides utilities to compute the shortest distance between a specific coordinate and a line defined by two points.
- Bounding Box Generation - Calculates the minimum and maximum latitude and longitude that encompass a set of coordinates.
- Geometry Center Retrieval - Calculates the central geographic coordinate of a collection of points or a bounding box.
- Data Processing Tools - Provides fundamental geospatial operations and calculations.
- JavaScript Geospatial Libraries - Basic geospatial operations like distance calculation.
