1 files changed, 6 insertions, 3 deletions
diff --git a/app/map.js b/app/map.js
index d27a009..d63da17 100644
--- a/app/map.js
+++ b/app/map.js
@@ -817,14 +817,17 @@ export class MapEl {
 	 * @param {AreaParam} param
 	 */
 	updateArea(param) {
-		const values = this.#collection?.statisticalAreas.map((area) => area.getValue(param));
+		const values = this.#collection?.statisticalAreas
+			.map((area) => area.getValue(param))
+			.filter((x) => !Number.isNaN(x))
+			.sort();
 		const range = { max: Math.max(...values), min: Math.min(...values) };
 		const statAreaPolygons = this.svg.querySelectorAll("#statistical-areas polygon");
 		statAreaPolygons.forEach((polygon) => {
 			const areaId = polygon.getAttribute("data-id");
 			const area = this.#collection?.statisticalAreas.find((a) => a.id === areaId);
-			if (area) {
-				const value = area.getValue(param);
+			const value = area?.getValue(param);
+			if (area && value && !Number.isNaN(value)) {
 				const normalized = MapMath.normalize(value, range.min, range.max);
 				polygon.setAttribute(
 					"fill",