Method evidence record

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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Areal Interpolation (Cross-Areal Data Transfer)

Taxonomic method record · process-pipeline / human-geography

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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Related methods

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Same method familyChoropleth Classificationmachine-suggested · Relational suggestion, not evidence.Same method familyDasymetric Mappingmachine-suggested · Relational suggestion, not evidence.Same method familyModifiable Areal Unit Problemmachine-suggested · Relational suggestion, not evidence.Same method familyPopulation Potential Modelmachine-suggested · Relational suggestion, not evidence.