Leaflet: How to add multiple markers onto featureGroup
I am trying to do something like : https://github.com/IvanSanchez/Leaflet.Polyline.SnakeAnim/blob/master/demo-group.gif where I have multiple markers.
In the example code https://github.com/IvanSanchez/Leaflet.Polyline.SnakeAnim/blob/master/demo-group.html each location has been manually added using
var trd = [63.5, 11],
mad = [40.5, -3.5],
lnd = [51.5, -0.5],
ams = [52.3, 4.75],
vlc = [39.5, -0.5];
var route = L.featureGroup([
L.marker(trd),
L.polyline([trd, ams]),
L.marker(ams),
L.polyline([ams, lnd]),
L.marker(lnd),
L.polyline([lnd, mad]),
L.marker(mad),
L.polyline([mad, vlc]),
L.marker(vlc)
]);
My question is, if I have many markers (e.g. 500 markers), how can I create the route without manually adding each marker and polyline to the L.featureGroup.
var bounds = new L.LatLngBounds();
for (var i = 0; i < mTool.length; i++) {
var loc = new L.LatLng(mTool[i].lat, mTool[i].lon);
bounds.extend(loc);
var marker = new L.Marker(loc);
map.addLayer(marker);
}
map.fitBounds(bounds);
Answers:
EDIT: What you want to do is provided by the same github project of IvanSanchez. Please read demo.html instead of demo-group.html
This is easily done by looping through an array of markers, as you rightly hinted at it. The code could be as below:
var markers = [[63.5, 11],
[40.5, -3.5],
[51.5, -0.5],
[52.3, 4.75],
[39.5, -0.5]];
var route = L.featureGroup().addTo(map);
var n = markers.length;
for (var i = 0; i < n-1; i++) {
var marker = new L.Marker(markers[i]);
var line = new L.polyline([markers[i],markers[i+1]]);
route.addLayer(marker);
route.addLayer(line);
};
route.addLayer(new L.Marker(markers[n-1]));
map.fitBounds(route.getBounds());
I created a working example on gist (here).