This node-gdal-async binding for Node.js provides a feature-complete way of reading, writing, and manipulating geospatial data, raster and vector, synchronously and asynchronously using GDAL.
// sample: open a shapefile and display all features as geojson
const dataset = gdal.open("states.shp");
dataset.layers.get(0).features.forEach(function(feature) {
console.log(feature.getGeometry().toJSON());
});
// same thing, but asynchronously, allowing integration in server-side multi-user code
const dataset = await gdal.openAsync("states.shp");
const features = (await dataset.layers.getAsync(0)).features;
const len = await features.countAsync();
for (let i = t; i < len; i++) {
features.getAsync(i, (error, feature) => {
console.log(feature.getGeometry().toJSON());
});
}
See ASYNCIO.md for some performance considerations when designing code
that will run multiple parallel operations on the same dataset.