nakarte

commit 072b6d2735058693e995288c0e4e41ffca5b478a
parent dfe4627add1500ebfff0da831948470e5709102a
Author: Sergej Orlov <wladimirych@gmail.com>
Date:   Wed, 22 Feb 2017 11:47:20 +0300

[elevation profile] if track has no points show notification, do not throw exceptions

Diffstat:
M
src/lib/leaflet.control.elevation-profile/index.js
 | 
8
+++++++-

1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/src/lib/leaflet.control.elevation-profile/index.js b/src/lib/leaflet.control.elevation-profile/index.js
@@ -36,6 +36,9 @@ function gradientToAngle(g) {
 }
 
 function pathRegularSamples(latlngs, step) {
+    if (!latlngs.length) {
+        return [];
+    }
     var samples = [],
         lastSampleDist = 0,
         lastPointDistance = 0,
@@ -204,10 +207,13 @@ L.Control.ElevationProfile = L.Class.extend({
             L.setOptions(this, options);
             this.path = latlngs;
             var samples = this.samples = pathRegularSamples(this.path, this.options.samplingInterval);
+            if (!samples.length) {
+                notify('Track is empty');
+                return;
+            }
             var self = this;
             this.horizZoom = 1;
             this.dragStart = null;
-
             this._getElevation(samples)
                 .then(function(values) {
                         self.values = values;