geojson_vi

Added

• Support for null geometry values in GeoJSONFeature and GeoJSONFeatureCollection according to the GeoJSON spec.

Fixed

• Issue with GeoJSONFeature.fromMap(...) and GeoJSONFeatureCollection.fromMap(...) not allowing null geometry values.
• Updated findNearestFeature to handle features with null geometry.
• Updated bbox calculation to handle null geometry.

Added

• None

Changed

• Enhanced the _removeBbox function to include null safety checks and an identity comparison to optimize performance and reliability. This improvement prevents unnecessary computations by checking if the input bounding boxes (bbox1 and bbox2) are identical or if bbox2 is null, thereby returning bbox1 directly under these conditions.

Deprecated

• None

Removed

• None

Fixed

• None

Security

• None

Added

• Added isPointInside method in GeoJSONPolygon to check if a point is inside a given polygon.
• Added isPointInsideComplex in GeoJSONPolygon to determine if a point lies within a complex polygon while considering holes.
• Added optimalPointInside method to GeoJSONPolygon for calculating the optimal point within a polygon, enhancing label placement in geospatial analyses.

• Resolved RangeError in equality comparison for GeoJSONPolygon when comparing polygons with different point counts (Issue #23).
• Improved equality comparison for GeoJSONMultiPolygon and GeoJSONMultiLineString to handle nested structures more effectively, addressing the concerns raised in Issue #23

• Fix centroid calculation to address algebraic sign issues for clockwise and counterclockwise polygons (Issue #22).
• Update part-of directive to use the URI instead of the library name.

• Updated the equality operator (==) and hashCode methods for the objects
• Revised the implementation of the toMap() method to ensure correct behavior
• Added comprehensive unit tests to verify the functionality of the objects
• Add findNearestFeature function to GeoJSONFeatureCollection
• Rename distance calculation function to calculateHaversineDistance and move to geojson_utils.dart
• Add utils/geojson_utils.dart
• Updated unit tests for GeoJSONLineString and GeoJSONPolygon.
• Added perimeter function to GeoJSONPolygon.
• Updated Earth's radius in distance calculation.

This new release of geojson_vi v2.1.0 continues to uphold our commitment to providing a robust, reliable, and efficient tool for developers working with GeoJSON data in Dart and Flutter. While maintaining full compliance with the RFC 7946 standard, we have introduced key enhancements allowing more versatility in managing and manipulating your geospatial data.

Key Highlights of the v2.1.0 Release:

Improved find properties functionality

We have significantly upgraded the findProperties method within the GeoJSONFeatureCollection class. Now, it comes with an optional contains parameter, enabling you to perform an approximate search on properties. This enhanced feature can cater to use cases where you need to find properties that contain certain keywords, enhancing the flexibility of data search within your GeoJSON collections.

Codebase Refactor for Improved Maintainability

In our commitment to constantly improving the codebase, we have refactored imports and applied the 'part of' directive for better code organization. This would facilitate easier understanding, modification, and code navigation, enhancing maintainability.

Comprehensive Documentation & Unit Tests

In addition to software enhancements, we believe in empowering our developers with rich resources. The update comes with extensive updates to README.md file and unit tests for various GeoJSON classes. This includes unit tests for GeoJSONPoint, GeoJSONMultiPoint, GeoJSONLineString, GeoJSONMultiLineString, GeoJSONPolygon, GeoJSONMultiPolygon, GeoJSONGeometryCollection, and GeoJSONFeature classes, equipping you with a comprehensive guide to maximize the utilization of geojson_vi.

Example Usage

To make the journey smoother for our users, we have added an example usage of the newly enhanced findProperties feature in the GeoJSONFeatureCollection class. This practical example will help you understand the functionality better and implement it seamlessly in your applications.

As always, we are eager to hear from our community. Please don't hesitate to give me feedback, suggestions, or any issues you encounter. Your active participation helps us to keep refining and enhancing geojson_vi.

Enjoy coding with geojson_vi v2.1.0!

Happy Geospatial Coding!

• Add example usage of findProperties in GeoJSONFeatureCollection
• Add feature search in findProperties with containment
• Refactor imports and apply 'part of' directive

• Add dartdoc comments to source code

• Fix Unhandled Exception: type 'int' is not a subtype of type 'String?'

• Fix GeometryCollection.bbox crashes when geometries is empty list #15

• Fix casting null value of "properties" to map #18

• Fix empty map casting

• Fixes "The coordinates MUST be one or more elements" in GeoJSONGeometryCollection #16

• fixes issue 13 - multipolygon assert
• adds indent parameter toJSON

• Updated API documentation

• Removed: load, save methods
• Fixed: formatting issues

• Fixed: formatting issues
• Changed: README

• Internal refactor
• Migrate to null-safety

• Fixed bbox of multipolygons
• Adds unit tests to:
  • points
  • polygons
  • multipolygons

• Changed toMap to toMap()

• Added toString() to save GeoJSON objects as string

• GeoJSON from GeoJSON String Objects is supported: FeatureCollection, Feature and all the Geometries like Point, MultiPoint, LineString, MultiLineString, Polygon, MultiPolygon and GeometryCollection string

• Create GeoJSON from GeoJSON String Objects, clear cache

• Formatting issues

• Added distance getter for LineString

• Fixed bbox reading

• Removed debugging info

• Removed debugging info

• Make properties member public

• Added bbox properties and fixed minor bugs

• Handles errors

• Export FeatureCollection

• Make the id property of the feature writable

• Make the title property of the feature writable

• Removed some sample data files

• Compatible with runtime flutter-web of web

• Compatiple with Flutter

• Update the document

• Refactoring the code, create instance from a cache if available

• Format code

• Compatibility issues

• Compatibility issues

• Added calculate area example into the readme

• Update the package export

• Update the document

• Update the document

• Fix encode issues

• Update GeoJSON UML model

• Update the document

• Update the package description

• Update the package description

• Update the package description

• Fix formatting issues

• Update the package description

• Update the package description

• Update the document

• Initial version, created by chuyentt