About

This is a wrapper-type plugin, bases on amazing:

• very fast 2D concave hull algorithm in JavaScript by Vladimir Agafonkin
• C++ port of mapbox's JS concaveman, with a Python wrapper

Core functionality:

• choose Point layer
• generate concave hull for all or selected points in that layer

Installation

Open osgeo4w shell and run:

python -m ensurepip --upgrade
pip install cffi

Copy "lib" folder with supplied DLL to plugin dir

$APPDATA%\QGIS\QGIS3\profiles\default\python\plugins\concaveman_qgis

Dependencies

Plugin depends on the following Python libraries:

• shapely
• numpy
• scipy
• cffi

Binary dependencies:

• concaveman-cpp compiled library
  DLL for Windows is inluded
  SO for Linux should be compiled from source

License

GPLv3