~/talk

Wrangling GeoTIFFs in the browser

Talkat FOSS4G SotM Oceania 2019 · 2019-11-12..11-15· [webassembly, javascript]
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slides:none on file

Shows running full GeoTIFF decode and analysis entirely in the browser using geotiff.js, georaster/plotty, geoblaze and gpu.js plus d3 for contours. Demonstrations include real‑time color ramps and clamping, on‑the‑fly contouring and iso‑bands, per‑polygon statistics over climate projections and raster algebra to compute wet‑bulb temperature, and an overview of ~330,000 bushfire runs that load individual GeoTIFFs on demand. Works but is limited by download size, decoding CPU/GPU cost, caching and need for COGs or tiling.

AI-written summary · about

  1. 0:00Introduction to GeoTIFFs
  2. 2:07Libraries for GeoTIFF processing
  3. 3:32Limitations of WMS for GeoTIFFs
  4. 5:00Visualizing GeoTIFFs in browser
  5. 5:44Web-based GeoTIFF analytics
  6. 8:14Library details and capabilities
  7. 10:47Limitations and challenges
  8. 12:35Demo of bushfire simulation
  9. 13:39Interactive climate projections
  10. 16:10Future improvements and optimizations
  11. 18:16Closing and Q&A
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