Hello I have a problem which is somewhat complex and being new to OpenLayers I don't really know how to start...
The task is this: 1) init: - loading a trace from a GPX File (incl. timestamps) - showing this trace as a polyline on a map - adding a marker at the starting point of the trace 2) functionality A: - the user should be able to drag the marker, but not to every position on the map position, but only along the polyline to one of the vertices of the trace - after dragend the GPS-timestamp of the vertex the marker is now positioned on shall be written to a div-field B: - the user should be able to commit a timecode through a form and then the marker will be moved to the first vertex with a timestamp latter than the user-given time The two most important (and most difficult) questions: - how do limit the dragging of a marker to a set of points (snap the marker position to the point closest to the mouseposition while dragging) - how do I handle the timestamp information from GPX-files as an attribute of a polyline vertex? Thanks a lot for your help Markus Havemann -- View this message in context: http://www.nabble.com/Snap-Marker-to-Polyline---Import-timestamps-from-GPX-tp19289324p19289324.html Sent from the OpenLayers Users mailing list archive at Nabble.com. _______________________________________________ Users mailing list Users@openlayers.org http://openlayers.org/mailman/listinfo/users