Merge pull request #15453 from sunilkpai/add-nanometer-to-scaleline

Add nanometer to scaleline
openlayers · Dec 30, 2023 · ee9908a · ee9908a
2 parents 45bbb1c + 2c6ff40
commit ee9908a
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Showing 2 changed files with 7 additions and 1 deletion.
diff --git a/src/ol/control/ScaleLine.js b/src/ol/control/ScaleLine.js
@@ -284,7 +284,10 @@ class ScaleLine extends Control {
       pointResolution /= 1852;
       suffix = 'NM';
     } else if (units == 'metric') {
-      if (nominalCount < 0.001) {
+      if (nominalCount < 1e-6) {
+        suffix = 'nm';
+        pointResolution *= 1e9;
+      } else if (nominalCount < 0.001) {
         suffix = 'μm';
         pointResolution *= 1000000;
       } else if (nominalCount < 1) {

diff --git a/test/browser/spec/ol/control/scaleline.test.js b/test/browser/spec/ol/control/scaleline.test.js
@@ -504,6 +504,9 @@ describe('ol.control.ScaleLine', function () {
     let mapView;
 
     const getMetricUnit = function (zoom) {
+      if (zoom > 40) {
+        return 'nm';
+      }
       if (zoom > 30) {
         return 'μm';
       }