use precise international inchesPerMeter

test scalebar text
2020-08-04 11:31:02 +01:00
parent 1b77409b63
commit 857f4e01ac
2 changed files with 50 additions and 1 deletions
--- a/src/ol/control/ScaleLine.js
+++ b/src/ol/control/ScaleLine.js
@@ -468,7 +468,7 @@ class ScaleLine extends Control {
    );
    const dpi = this.dpi_ || DEFAULT_DPI;
    const mpu = this.viewState_.projection.getMetersPerUnit();
-    const inchesPerMeter = 39.37;
+    const inchesPerMeter = 1000 / 25.4;
    return parseFloat(resolution.toString()) * mpu * inchesPerMeter * dpi;
  }