GeoDa WASM

GeoDa WASM is a WebAssembly module that provides spatial data analysis capabilities from the GeoDa C++ library for use in web browsers and Node.js applications.

✨ Features

• 🗺️ Spatial Data Analysis Tools: Dive into a world of spatial insights.
• 📐 Support for Various Geometry Types: Points, Lines, Polygons - we've got you covered!
• 🔄 Spatial Weights Calculations: Calculate with precision.
• 📊 Local Spatial Autocorrelation Statistics (LISA): Discover patterns like never before.
• 📈 Spatial Regression Analysis: Uncover relationships in your data.
• 🗺️ Mapping and Classification Methods: Visualize your data beautifully.

🚀 Installation

Get started in a flash with your favorite package manager:

npm install geoda-wasm

or

yarn add geoda-wasm

🛠️ Usage

🔧 Basic Initialization

typescript
import {initGeoDa} from 'geoda-wasm';
// Initialize using CDN-hosted WASM file
const geoda = await initGeoDa();

🏗️ Working with Geometries

The library supports three main geometry types:

• Points
• Lines
• Polygons

You can create geometry collections from various data formats:

• GeoJSON
• Binary Features (Arrow format)
• Point Layer Data

import {
createPointCollectionFromBinaryFeatures,
createLineCollectionFromBinaryFeatures,
createPolygonCollectionFromBinaryFeatures
} from 'geoda-wasm';
// Example with point data
const pointCollection = createPointCollectionFromBinaryFeatures(pointsArray, geoda);

🏗️ Building from Source

📋 Prerequisites

• CMake (3.5 or higher)
• Emscripten
• Node.js (18.19.0 recommended)
• Yarn (4.0.0 recommended)

🛠️ Build Steps

1. Clone the repository
2. Build the WASM module:

cd src/js
yarn install
yarn wasm

3. Build the JavaScript wrapper:

yarn build

cd src/js
yarn test

📜 License

This project is licensed under the MIT License. Authors: Luc Anselin and Xun Li.

🤝 Contributing

Contributions are welcome! Please feel free to submit a Pull Request.