Markers position when zooming

[marianoarga]

Marker moves out when I zoom in or out, the position moves around, how can I keep it in the same coordinates? Is this spected? Tried OpenMaps and MapBox.
UPDATE:
This is only reproduce when using non "square" marker proportions...

new Marker(
  width: 180.0,
  height: 60.0,
...

Using square width and height seems to solve this issue.

[vinicentus]

+1 I'd like to see this fixed

[johnpryan]

This could be a math / rounding issue with coordinates. Can you make sure you are setting the pin position correctly and not to the center of the icon?

[marianoarga]

@johnpryan I dont understand the question, the coordinates are ok, always comparing with a google maps pinned marker.
I have tried with widgets other than an Icon, Card for example, in order to be more descriptive about the marker inside the map, but got the same issue.
The marker itself seems to be pinned at the choosen widgets's center o bottom center, not sure, but in a squared size little Icon the bug isn't noticeable.

[johnpryan]

Sorry - I meant to say did you try setting the AnchorPos attribute of the marker? https://github.com/apptreesoftware/flutter_map/blob/master/lib/src/layer/marker_layer.dart#L70

[alfanhui]

I have a fix for this in my project at home, please bear with me a few days to prepare a PR.

It's either todo with min/max zoom and the starting zoom or/and with the allignment attributes of the marker.

[marianoarga]

@johnpryan AnchorPos solve this issue (Having non-square Marker), thank you.

[johnpryan]

cool, thanks for filing an issue!