Multiple markers with the same latitude & longitude

[BramDC3]

I'm working on a Flutter app that has a list of learning opportunities that can happen on the same location, but right now the markers on the map just stack. I don't think there's a way yet to display the number of markers that overlap.

[johnpryan]

Not out of the box, but you can manually "cluster" the pins on the client side or cluster them some other way. Since everything is a widget, it's fairly simple to overlay text containing the number over a pin widget.

Let me know if you need more guidance!

[BramDC3]

Thanks for the reply, but I have no idea how to do that though :/ Op wo 12 sep. 2018 om 20:15 schreef John Ryan <notifications@github.com>:

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Not out of the box, but you can manually "cluster" the pins on the client side or cluster them some other way. Since everything is a widget, it's fairly simple to overlay text containing the number over a pin widget. Let me know if you need more guidance! — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub <https://github.com/apptreesoftware/flutter_map/issues/100#issuecomment-420746898>, or mute the thread <https://github.com/notifications/unsubscribe-auth/Ae1SG_jg_IQwqHQhcE8sqTDLkifd0WM4ks5uaU89gaJpZM4Wkxpd> .

[johnpryan]

You could take a look at https://github.com/Leaflet/Leaflet.markercluster for inspiration, but the plugin would need to be ported to Dart in order to use it...

Since this is harder than most contributions, I'll leave this open for anyone that wants to try.

[zhen1991]

Hi!
I have a little bit the same problem i wanna add a gruop of marker to my map and i am using flutter map !
any idea about how to do it??
thnx:)

[etzuk]

You could take a look at https://github.com/Leaflet/Leaflet.markercluster for inspiration, but the plugin would need to be ported to Dart in order to use it...

Since this is harder than most contributions, I'll leave this open for anyone that wants to try.

I need this feature too. I probably implement that.

@johnpryan What do you think about adding MarkerClusterLayer as a layer? (same as marker,circle ...)
For example:
class MarkerCluster { final List<Marker> markers; final WidgetBuilder builder; MarkerCluster(this.markers, this.builder); }

[johnpryan]

@etzuk I'm not opposed if someone would like to implement that as a plugin. There's different strategies to cluster markers, as well as different APIs (cluster radius, etc)

[aytunch]

You could take a look at https://github.com/Leaflet/Leaflet.markercluster for inspiration, but the plugin would need to be ported to Dart in order to use it...
Since this is harder than most contributions, I'll leave this open for anyone that wants to try.

I need this feature too. I probably implement that.

@johnpryan What do you think about adding MarkerClusterLayer as a layer? (same as marker,circle ...)
For example:
class MarkerCluster { final List<Marker> markers; final WidgetBuilder builder; MarkerCluster(this.markers, this.builder); }

@etzuk Did you have a chance to look in to this issue/feature? Seems like lots of us are interested in it:)

[csjames]

Would users specify their own centroid and markers for each cluster, or would clustering need to also be handled by the lib?

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On Mon, 4 Feb 2019 at 22:27, aytunch ***@***.***> wrote: You could take a look at https://github.com/Leaflet/Leaflet.markercluster for inspiration, but the plugin would need to be ported to Dart in order to use it... Since this is harder than most contributions, I'll leave this open for anyone that wants to try. I need this feature too. I probably implement that. @johnpryan <https://github.com/johnpryan> What do you think about adding MarkerClusterLayer as a layer? (same as marker,circle ...) For example: class MarkerCluster { final List<Marker> markers; final WidgetBuilder builder; MarkerCluster(this.markers, this.builder); } @etzuk <https://github.com/etzuk> Did you have a chance to look in to this issue/feature? Seems like lots of us are interested in it:) — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#100 (comment)>, or mute the thread <https://github.com/notifications/unsubscribe-auth/ALluZXmeWVvnDgKsOZy9kKT8WooQ7Md8ks5vKLO5gaJpZM4Wkxpd> .

[johnpryan]

I haven't had time to put serious thought into this feature. I imagine that there would be two builders; one for the case where a pin is not clustered, and one that is clustered (with a number indicating the number of pins) and as @csjames mentioned some way of specifying the cluster distance (e.g. https://www.elastic.co/guide/en/elasticsearch/guide/current/geo-aggs.html)

[flutter-painter]

Any chance to put this on top ?
Markerclusterer would be a must for our users.
Here is another reference in .js :
Supercluster :

• https://gis.stackexchange.com/questions/261987/custom-icon-for-clusters-in-mapbox-gl-js
• https://www.npmjs.com/package/supercluster

How about reusing :

• https://github.com/jolleekin/modern_charts/blob/master/lib/src/pie.dart

To get :