Areal Interpolation
Areal interpolation is the family of methods for transferring attribute data — populations, counts, rates — from one set of areal units (the source zones) onto a different, incompatible set (the target zones). The need arises constantly in geography because census tracts, postal zones, electoral districts, and grid cells rarely align, yet analysts must combine data reported on mismatched geographies. The methods range from simple area-proportional weighting through ancillary-informed dasymetric refinement to Waldo Tobler's 1979 volume-preserving pycnophylactic smoothing, each trading simplicity for accuracy.
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Kilder
- Tobler, W. R. (1979). Smooth pycnophylactic interpolation for geographical regions. Journal of the American Statistical Association, 74(367), 519–530. DOI: 10.1080/01621459.1979.10481647 ↗
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ScholarGate. (2026, June 22). Areal Interpolation (Cross-Areal Data Transfer). ScholarGate. https://scholargate.app/da/human-geography/areal-interpolation
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- Choropleth ClassificationHuman Geography↔ sammenlign
- Dasymetric MappingHuman Geography↔ sammenlign
- Modifiable Areal Unit ProblemHuman Geography↔ sammenlign
- Population Potential ModelHuman Geography↔ sammenlign
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