# HG changeset patch
# User Bernhard Reiter <bernhard@intevation.de>
# Date 1540539343 -7200
# Node ID 3f14b73414e2438bb0598eed3e79a54bd894d549
# Parent  7ec2133c6404999fd01a4ba0121245326b5b8104
client: correct and improve area measurement

 * Correct the conversion to km².
 * Offer m² if we are blow 0.1 km², otherwise round to 1000 m²

diff -r 7ec2133c6404 -r 3f14b73414e2 client/src/map/Maplayer.vue
--- a/client/src/map/Maplayer.vue	Thu Oct 25 23:16:53 2018 +0200
+++ b/client/src/map/Maplayer.vue	Fri Oct 26 09:35:43 2018 +0200
@@ -162,7 +162,12 @@
         const areaSize = getArea(event.feature.getGeometry());
         // also place the a rounded areaSize in a property,
         // so identify will show it
-        event.feature.set("area (km²)", Math.round(areaSize) / 1000);
+        if (areaSize > 100000) {
+          // convert into 1 km² == 1000*1000 m² and round to 1000 m²
+          event.feature.set("area (km²)", Math.round(areaSize / 1000) / 1000);
+        } else {
+          event.feature.set("area (m²)", Math.round(areaSize));
+        }
       }
       if (this.drawMode === "LineString") {
         const length = getLength(event.feature.getGeometry());