how to get index when click point element?

[wiztensai]

hi, thanks for this great library. how to get index? because i want to show alert dialog when user click pointElement

[entronad]

The GeomElement.selectionChannel's stream will eject a value when you select an element item. This value contains a set of selected indexes. see details in:
https://pub.dev/documentation/graphic/latest/graphic/GeomElement/selectionChannel.html

[wiztensai]

do you have its example?

[entronad]

graphic/example/lib/pages/interaction_channel_dynamic.dart

Line 185 in f808963

Container(

[wiztensai]

thanks bro!!

heatmapChannel.stream.listen((event) {
      print(event);
});