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https://github.com/rastapasta/tileshrink

🌐 CLI tool to reduce and simplify Vector Tile features in an MBTiles container
https://github.com/rastapasta/tileshrink

Last synced: 25 days ago
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🌐 CLI tool to reduce and simplify Vector Tile features in an MBTiles container

Host: GitHub
URL: https://github.com/rastapasta/tileshrink
Owner: rastapasta
License: mit
Created: 2016-11-10T20:16:51.000Z (almost 8 years ago)
Default Branch: master
Last Pushed: 2019-11-06T00:40:11.000Z (about 5 years ago)
Last Synced: 2024-10-12T16:34:04.439Z (27 days ago)
Language: CoffeeScript
Homepage:
Size: 17.6 KB
Stars: 31
Watchers: 7
Forks: 7
Open Issues: 3
Metadata Files:
- Readme: README.md
- License: LICENSE

Awesome Lists containing this project

awesome-vector-tiles - tileshrink - Reduce the layer extent and simplify the resulting geometries of all vector tiles in an MBTiles (CLI Utilities)

README

# tileshrink
[![npm version](https://badge.fury.io/js/tileshrink.svg)](https://badge.fury.io/js/tileshrink)
![dependencies](https://david-dm.org/rastapasta/tileshrink.svg)
![license](https://img.shields.io/github/license/rastapasta/tileshrink.svg)

Reduce and simplify all features of all or any [vector tiles](https://github.com/mapbox/vector-tile-spec/tree/master/2.1) in an [MBTiles](https://www.mapbox.com/help/an-open-platform/#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

## Requirements

* The upstream library [`tilegrinder`](https://github.com/rastapasta/tilegrinder) uses the native protobuf wrapper library [`node-protobuf`](https://github.com/fuwaneko/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`](http://brew.sh/) to install `protobuf` with `brew install pkg-config protobuf`

* Windows: `node-protobuf` includes a pre-compiled version for 64bit systems

## How to install it?

npm install -g tileshrink

## How to use it?

```
$ 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
```

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.