Spend and population estimation: provenance and assumptions
Track-B Phase B: fix gis category — correct Denmark/Iceland EUR currency mislabeling in spend-population-provenance and trade-area-data-sources (neither is eurozone), flag pending DKK/ISK re-derivation rather than fabricate figures; fix non-wikilinked See-also bullets; add missing audience/See-also to transaction-summary-report-protocol
@@ -11,7 +11,7 @@ status: active audience: customer-woodfine bcsc_class: current-fact language_protocol: PROSE-TOPIC last_edited: 2026-08-25 last_edited: 2026-09-04 editor: pointsav-engineering short_description: "Provenance chain behind catchment population and spend estimates — WorldPop rasters, H3 aggregation, and per-capita multipliers, with their stated weaknesses." paired_with: gis/spend-population-provenance.es.md @@ -126,12 +126,14 @@ Multipliers are annual per-capita expenditure proxies expressed in local currenc | Austria | €3,000 | €950 | €1,000 | EUR | | Portugal | €2,400 | €600 | €700 | EUR | | Greece | €2,200 | €500 | €600 | EUR | | Denmark | €3,500 | €1,200 | €1,100 | EUR | | Iceland | €4,000 | €1,500 | €1,500 | EUR | | Denmark | €3,500\* | €1,200\* | €1,100\* | DKK\* | | Iceland | €4,000\* | €1,500\* | €1,500\* | ISK\* | | Poland | PLN 8,000 | PLN 2,000 | PLN 2,500 | PLN | **Currency note.** Because multipliers are in local currency and are not FX-normalised, cross-country spend comparisons are not directly meaningful. Rankings are most defensible within a single country or within the eurozone. \* Denmark and Iceland are not eurozone members; their multipliers are shown here still denominated in euros pending re-derivation in DKK and ISK, and are not yet comparable to the eurozone figures above them. ## How to read a spend or population figure 1. **Population and spend are modelled estimates, not counts.** They are built from open data and carry the errors described above. @@ -162,5 +164,4 @@ All forward-looking items above are stated as planned or intended; they describe - [[trade-area-methodology]] — how the polygon over which population and spend are summed is defined - [[co-location-tiering-scoring]] — how the spend figure feeds the planned strength score - the settlement-level rollup that aggregates cluster-level figures - the orchestration layer that runs the spend and population pipeline - [[trade-area-data-sources]] — the population and spend data sources and per-capita multiplier table