https://github.com/jancaha/qgis-qmapshaper

QGIS plugin for running mapshaper directly from QGIS.
https://github.com/jancaha/qgis-qmapshaper

python3 qgis qgis-plugin qgis-processing

Last synced: about 1 year ago
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QGIS plugin for running mapshaper directly from QGIS.

• Host: GitHub
• URL: https://github.com/jancaha/qgis-qmapshaper
• Owner: JanCaha
• Created: 2022-01-28T23:04:04.000Z (over 4 years ago)
• Default Branch: master
• Last Pushed: 2023-12-17T21:29:32.000Z (over 2 years ago)
• Last Synced: 2023-12-17T22:22:36.814Z (over 2 years ago)
• Topics: python3, qgis, qgis-plugin, qgis-processing
• Language: Python
• Homepage: https://jancaha.github.io/qgis-qmapshaper/
• Size: 4.32 MB
• Stars: 12
• Watchers: 2
• Forks: 2
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

          
# QMapshaper

[![Tests for Plugin QMapshaper](https://github.com/JanCaha/qgis-qmapshaper/actions/workflows/test_plugin.yaml/badge.svg)](https://github.com/JanCaha/qgis-qmapshaper/actions/workflows/test_plugin.yaml)

QGIS plugin to turn [mapshaper](https://github.com/mbloch/mapshaper) into QGIS tool.

## Installation

Requires installation of NodeJS, npm and mapshaper.

### Linux

On most Linux distributions this should do:

```

sudo apt install nodejs

sudo apt install npm

npm install mapshaper

```

You can also install mapshaper globally for the system.

```

npm install -g mapshaper

```

### Windows

On Windows the setup may vary. You then need the path to `mapshaper` folder in `node_modules`. See details below.

## Setting up

In **QGIS settings** under **Processing** under **QMapshaper** the **_mapshaper_** folder needs to be set up.

On Linux this tends to be: `/home/user_name/node_modules/mapshaper`, where you just replace `user_name` with your user name. If this is not the case you have to investigate, where the folder is. Best way might be to search for file **mapshaper-gui** which is located in the `mapshaper/bin` directory.

## Tools

So far there is processing tool **Simplify vector** usable in complex workflows. There is also **Interactive Simplifier** which is GUI tool that allows playing around interactively with the simplification parameters.

## Examples

### Plugin Settings

The settings requires `Mapshaper folder` and `Mapshaper tool name`. The tool name for Linux and Windows wary, but the plugin does it's best to set it up correctly. For Linux and MacOS it should be `mapshaper-xl` while on Windows `mapshaper-xl.cmd` should be the correct programme.

![](website/pages/images/plugin_settings.png)

### Interactive Tool

![](website/pages/images/interactive_tool.gif)

### Use Case

![](website/pages/images/use_case.gif)