How could I move a bounding box to a new center using Leaflet? There is a getCenter() method, but not a setCenter() one...

  • why downvoted ?
    – gordie
    Feb 15, 2020 at 10:12
  • I suspect this is a XY problem. Assuming that "a bbox can be moved" shows lack of knowledge of projections, which leads me to suspect there is some deeper problem in here. So, what's the use case for moving a bbox around? Feb 15, 2020 at 20:31
  • @ IvanSanchez: I want to be able to place an image on a map and dynamically move it.
    – gordie
    Feb 16, 2020 at 8:50
  • 2
    Bounding box is property of object(s), not a thing by itself. You can move object(s) and by moving them, bounding box will move. So please edit your question and describe what you want to do (like in a comment to IvanSanchez).
    – TomazicM
    Feb 16, 2020 at 10:12
  • Yeah, this is a XY problem indeed. @gordie doesn't want to move a bounding box, but to move an overlaid image instead. I'm gonna guess that a plugin like github.com/w8r/Leaflet.Path.Drag or github.com/ScanEx/Leaflet.imageTransform would cover the use case. Feb 16, 2020 at 19:25

1 Answer 1


I managed to do it doing like that :

  var anchorPos = anchorMarker.getLatLng();
  var bounds = overlay.getBounds();

  anchorMarker.on('drag', function (e) {
    var oldPos = anchorPos;
    var newPos = e.target.getLatLng();

    var offset = [
      newPos.lat - oldPos.lat,
      newPos.lng - oldPos.lng,

    var northWestPos = new L.LatLng(bounds.getNorth() + offset[0],bounds.getWest() + offset[1]);
    var southEastPos = new L.LatLng(bounds.getSouth() + offset[0],bounds.getEast() + offset[1]);

    bounds = L.latLngBounds(northWestPos,southEastPos);
    anchorPos = newPos;

  • The problem with that approach is that the size of the bounding boxes is different (when measured on visible pixels on the screen at any given zoom level, or on projected map units). Feb 16, 2020 at 19:20
  • Marker setLatLng method would be much simpler and the right method to use if object (image?) size has to stay the same at all zoom lavels.
    – TomazicM
    Feb 16, 2020 at 20:09

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge that you have read and understand our privacy policy and code of conduct.

Not the answer you're looking for? Browse other questions tagged or ask your own question.