Fast raster extraction and manipulation in R

velox is an R package for performing fast extraction and manipulation operations on geospatial raster data. velox is fast because:

velox is fully interoperable with the raster, sp, and sf packages.

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Optimized for speed

Aggregating September 2017 nightlight emissions for 2268 Swiss communes takes 0.84 seconds in velox and 54.76 seconds in raster.


velox currently offers the following features:

  • Raster value extraction given polygons, lines, or points
  • Focal value calculation (i.e.┬ámoving window filters)
  • Rasterization of polygons or lines
  • Raster aggregation
  • Cropping
  • Image patch flattening and reconstruction