AreaInterpolation

AreaInterpolation.jl is a package to perform "areal interpolation", that is, interpolating values associated with one set of polygons, to another set of polygons that overlap the first set ¹.

Similar implementations in other languages can be found in ² (R), ³ (R), and ⁴ (Python).

Quick start

The main entry point is the AreaInterpolation.interpolate([alg], source, dest; extensive = (:col_a, :col_b), intensive = (:col1, :col2)). Here source should be a DataFrame with the columns in extensive and intensive, which define how to treat the variables - whether as counts or means.

Performance

AreaInterpolation.jl offers seamless multithreading support, and integrates with the rest of the Julia ecosystem as well!

Related packages

• ConservativeRegridding.jl also implements the "direct" area-weighted interpolation algorithm, but not others like the pycnophylactic or dasymetric interpolations.

References:

Footnotes

1. GISTBOK Areal Interpolation chapter ↩

2. https://github.com/chris-prener/areal ↩

3. Area-weighted interpolation also exists in R's sf package, (see the sf documentation) ↩

4. Tobler, a Python package in the PySAL suite ↩