🌐 CLI tool to reduce and simplify Vector Tile features in an MBTiles container
MIT License
Reduce and simplify all features of all or any vector tiles in an MBTiles container.
Helpful in case
your maximal projection size is much smaller than the tiles' one
you want to create a ultra-low-bandwidth MBTiles version
The upstream library tilegrinder
uses the native protobuf wrapper library node-protobuf
for its magic
To let it build during npm install
, take care of following things:
Linux: libprotobuf
must be present (apt-get install build-essential pkg-config libprotobuf-dev
)
OSX: Use homebrew
to install protobuf
with brew install pkg-config protobuf
Windows: node-protobuf
includes a pre-compiled version for 64bit systems
npm install -g tileshrink
$ tileshrink --help
tileshrink
Reduce and simplify Vector Tile features in an MBTiles container
Examples
$ tileshrink --shrink 4 input.mbtiles output.mbtiles
$ tileshrink --shrink 4 --output files input.mbtiles /foor/bar/
Options
--extent pixel desired extent of the new layers [deault: 1024]
--precision float affects the level of simplification [deault: 1]
--shrink zoom maximal zoomlevel to apply the shrinking
--include zoom maximal zoomlevel to import untouched layers from [optional]
--output type mbtiles (default) or files
--help displays this help screen
made with ⠀❤⠀⠀at https://github.com/rastapasta/tileshrink
Copyright (c) 2016 Michael Straßburger
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.