Question 1

How do I use gdal3.js in a React application?

Accepted Answer

Install via npm and copy the WASM files to your static directory using a plugin like CopyWebpackPlugin. Initialize initGdalJs with the correct paths, similar to the Vue example provided in the README.

Question 2

gdal3.js vs node-gdal: which is better for Node.js?

Accepted Answer

Choose node-gdal for server-side applications where performance is critical, as it's a native binding. Use gdal3.js if you need cross-platform compatibility or plan to share code with browser environments.

Question 3

How to convert a Shapefile to GeoJSON in the browser with gdal3.js?

Accepted Answer

Load the Shapefile using Gdal.open, then call Gdal.ogr2ogr with options like '-f GeoJSON' and '-t_srs EPSG:4326'. Retrieve the output bytes with Gdal.getFileBytes for download or display.

Question 4

Does gdal3.js support Cloud Optimized GeoTIFF (COG)?

Accepted Answer

Yes, COG is listed under write-only raster formats in the README. You can create Cloud Optimized GeoTIFFs using gdal_translate with the '-of COG' option and appropriate creation flags.

Question 5

How to handle large files with gdal3.js in a browser?

Accepted Answer

Use Web Workers to offload processing and prevent UI blocking. Be mindful of browser memory limits, as all data is processed client-side; consider chunking or streaming for very large datasets.

Question 6

Is gdal3.js production ready for commercial use?

Accepted Answer

It's actively maintained with recent updates and a live GUI, but evaluate performance and bundle size for your use case. The LGPL license requires compliance with open-source terms for distribution.

gdal3.js

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