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add slope, focal and cost distance with Stencils.jl #447

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@rafaqz rafaqz commented May 13, 2023

Use Stencils.jl for fast parallel/GPU focal and slope filters, and a (single threaded but still fast) cost_distance model.

This PR will likely take a bit to be finalised and may need some changes to Stencils.jl.

Closes #410

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codecov-commenter commented May 13, 2023

Codecov Report

Merging #447 (43a34df) into main (00eb7ab) will decrease coverage by 2.12%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##             main     #447      +/-   ##
==========================================
- Coverage   80.04%   77.93%   -2.12%     
==========================================
  Files          41       44       +3     
  Lines        3989     4097     +108     
==========================================
  Hits         3193     3193              
- Misses        796      904     +108     
Impacted Files Coverage Δ
ext/RastersStencilsExt/cost_distance.jl 0.00% <0.00%> (ø)
ext/RastersStencilsExt/focal.jl 0.00% <0.00%> (ø)
ext/RastersStencilsExt/slope_aspect.jl 0.00% <0.00%> (ø)

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rafaqz commented Jun 3, 2023

After discussion with @evetion, this could instead go in:

https://github.com/Deltares/GeoArrayOps.jl

And we could make it all Rasters.jl compatible, if it isn't already

@rafaqz rafaqz closed this Feb 6, 2024
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Accumulation Cost or Cost distance feature
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