FOSS4G 2022 general tracks

State of GeoRasterLayer: A LeafletJS Plugin for Visualizing GeoTIFFs (and soon other rasters)
2022-08-26, 14:45–15:15 (Europe/Rome), Room Onice

GeoRasterLayer is a LeafletJS Plugin for visualizing GeoTIFFs. This presentation will show live demos of new features and discuss the roadmap for the next couple of years.

Features

  • Support for nearly all projections, thanks to proj4-fully-loaded and epsg.io
  • Super faster rendering thanks to a simple nearest neighbor interpolation
  • Use of web workers means seamless integration that doesn't block main thread
  • Loads large geotiffs greater than a hundred megabytes
  • Supports custom rendering including custom colors, directional arrows, and context drawing
  • Doesn't depend on WebGL

Videos

Examples

  • Loading the georaster-layer-for-leaflet library along with GeoBlaze via a script tag. You can view the source code here and the live demo here.
  • Combining two Cloud Optimized GeoTIFFs together to create an NDVI map. You can view the source code here and the live demo here.
  • Identifying Wildfires from a Landsat 8 Scene. You can view the source code here and the live demo here.
  • Visualizing Population COG. You can view the source code here and the live demo here.
  • Display a COG that represents only one band of a Landsat scene. You can view the source code here and the live demo here.
  • Display a COG with YCbCr Photometric Interpretation. You can view the source code here and the live demo here.

Daniel Dufour is the CEO of GeoSurge, a geospatial tech company with a focus on data compression, natural language processing, remote sensing, and visualization. He created or co-created several open-source geospatial projects, including geotiff.io, georaster, georaster-layer-for-leaflet, geoblaze, geowarp, and proj4-fully-loaded.

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