How to clear the trail?

[ghost]

Please see this SO question

[perliedman]

I posted a reply on SO, but here's a copy of it:

To remove features, the easiest is to just no longer provide those features to the success callback.

So, to remove the trail, you would add some condition under which the trail should no longer be visible and call success like this:

                success({
                    type: 'FeatureCollection',
                    features: [data, trail]
                });

Likewise, if you want to remove the marker as well, call success with empty features:

                success({
                    type: 'FeatureCollection',
                    features: []
                });