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houses: zero-pad Leefbaarometer grid cell ids (cells west of x=100 km, e.g. Zevenhuizen, Rotterdam)
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Stan Runge
2026-10-24 15:45:26 +00:00
parent 113eb54cd9
commit a04e5faebe
2 changed files with 4 additions and 2 deletions
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1
src/lib/house-tracker/liveability.test.ts
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@@ -5,6 +5,7 @@ describe('leefbaarometer helpers', () => {
it('names the 100 m cell by its lower-left corner in hectometres', () => {
expect(gridCellId([106050.4, 446899.9])).toBe('E1060N4468');
expect(gridCellId([105866.161, 446838.902])).toBe('E1058N4468');
expect(gridCellId([92050, 437250])).toBe('E0920N4372');
});
it('labels classes 1-9', () => {
expect(lbmClassLabel(1)).toBe('zeer onvoldoende');

5
src/lib/house-tracker/liveability.ts
View File

@@ -243,9 +243,10 @@ async function wfsArea(layer: string, cql: string): Promise<LbmArea | null> {
};
}
/** 100 m cell id as used by the Leefbaarometer grid: lower-left corner in hectometres. */
/** 100 m cell id as used by the Leefbaarometer grid: lower-left corner in hectometres,
* zero-padded to 4 digits (E0920N4372 west of x = 100 km, e.g. Rotterdam, Zevenhuizen). */
export const gridCellId = ([x, y]: [number, number]) =>
`E${Math.floor(x / 100)}N${Math.floor(y / 100)}`;
`E${String(Math.floor(x / 100)).padStart(4, '0')}N${String(Math.floor(y / 100)).padStart(4, '0')}`;
export async function liveabilityAt(parts: AddressParts): Promise<Liveability | null> {
const geo = await geocode(parts);