I have a google map app and the user is able to perform a marker search.
The search has the current mapBounds so that I can search only in the current view. However, if I don't have any results in the current view - I'm trying to do a search within 100km of the center of the map.
If I find location within 100km I want to zoom out the map in order to show the locations I've found.
On the server I go through all my locations and get the sw and ne points. So basically in my ajax response I can directly create latLngBounds (no need to loop through the markers locations and extend the bounds).
The issue is whenever I try to do map.fitBounds(mynewbounds); nothing happens. The map stays as it is.
It seems that since the center of the map is the center of the new bounds, the map doesn't want to move. If I do map.pantobounds then the map moves to the northwest corner of the bounds.
The behavior of pantoBounds is expected according to the documentation:
https://developers.google.com/maps/documentation/javascript/reference
If the bounds is larger than the map, the map will be shifted to include the northwest corner of the bounds
Any ideas how to make the map zoom out in order to contain the new bounds?
Okay, I just figured out what is going on. Right before I set the boundaries I was trying to remove my zoom_out and dragend events. Unfortunately I opted in for using the clearListeners event, which was removing all events set on the map (even the one that are not set by me). So it seems that fitBounds issues are zoom_changed event, but the map was not responding to it, as all listeners were removed.
Once I removed the correct events by using removeListener(listenerInstance) the fitBounds function started to behave as expected.
So just as a warning to everyone else! Don't use clearListeners if you don't know what you are doing. It removes all events assigned to the map object which can lead to nasty behavior!
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I'm using a MapBox GL map in my web application. It has some interactivity features that I handle through pointermove events. When the user moves the pointer over the map (it might also be outside the map, which has different functionality) I can show a custom marker element (simple <div>, position is absolute to the document) over the map where the pointer currently is. When the drag operation is completed, I need to know the map coordinates under that point.
So what I need is a method to convert a screen or document position (X, Y) to the coordinates (Lat, Lng) on the map in its current view state.
All I found was the getCenter method that gives me the center of the map (not the pointer positition) or the project method that seems to do the exact opposite of what I need. There also seems to be the map's "mousemove" event or similar, which could give me the coordinates in the event data, but I'm not using that event, because the drag operation could have started outside the map. Seems I need the reverse operation of the project method. Is there any?
After digging through the map's source code regarding the "mousemove" event, I found the Map.unproject method. It seems to be what I need. It wants x/y coordinates relative to the map element, not the document though. I just didn't find it and Google didn't know what I mean either. Maybe this answer teaches Google a bit more about possible search terms not mentioned elsewhere.
I have an web application, written using Angular.js and angular-leaflet-directive, that displays a selection of roads on a map. I have included some bookmarks for easy navigation to certain areas and so was basing map extent navigation on using the center and zoom attributes.
I am now also including functionality to determine whether a road is visible in the current map extent, using:
map.getBounds().contains([roadLatA, roadLngA]) || map.getBounds().contains([roadLatB, roadLngB]), where A and B refer to the end points of a road.
This works perfectly on page load but after any sort of interaction (e.g. drag, zoom events) when getBounds() is called again, it returns the same LatLng for each corner of the bounding box, which are the values that are set as the default center coordinates. After a lot of refactoring I cannot find a way to incorporate both center and getBounds() successfully.
Is it possible or is there a limitation within either angular-leaflet-directive or leaflet.js that means the two methods of setting map extent conflict with each other?
I have now resolved the problem, the issue was in calling leafletData.getMap() without passing in the id of the map element.
This behaviour was throwing me as the initial getMap() call (without an id) was returning the correct map object, but on subsequent calls (after user interaction) the $promise was not being resolved and so I wasn't getting undefined or any other errors. I guess the getBounds() function was then being called on the wrong map object.
I have a map application that can be seen here:
http://chrismcaleenan.com/map/?page_id=25
Each of the Malaysian states in the application will have an InfoWindow that displays additional information. You can see an example of this by mousing over 'Kedah' either in the main data table on the right or on the state itself in the map.
The problem, as you can see, is that the map pans in order to position the InfoWindow. Is there a way to fix the map position and set the InfoWindow size or position so that it is fully displayed without panning? In the Kedah example, one could have the InfoWindow positioned directly to the right and/or use a shorter tail.
One option would be to create a custom graphic for each state, but I'd rather avoid this as I will be running into the same issue with add'l data (e.g. click Kedah to zoom - will have InfoWindows on all data points on zoom).
If you're playing around double-clicking the water will zoom back out and reset map.
Thanks!
Yes, and sometimes the pan pulls the mouse outside of the state, which causes the InfoWindow to disappear. I know that's not what you want. The Google Maps demo catalog includes a sample that I think will give you what you want for your map. It's named SmartInfoWindow. Take a look, click on some of the markers, check out how the SmartInfoWindow behaves, and see if that might help you achieve what you want. It's not perfect, but it keeps the pan at the absolute minimum.
How can I add a listener to google maps so that When it already has marker at say position x,y then another marker when added to the map to the same location will displace both the new and old markers in the vicinity of x,y so that they dont overlap.
also for e.g. there are 2 markers close but not overlapping, we add a third marker overlapping on of them, then we displace all three to form an equilateral triangle.
I ran into this issue also, Diodeus is correct that if you want to actually move one of the markers locations you would have to keep a store of your markers and as you are getting ready to plot check if that specific lat lng has already been plotted, if so at that point you would adjust the lat lng. The problem I ran into was that then one of your markers is in an incorrect location and/or it is still not viewable depending on the degree of zoom in correlation to the displacement that you add to your lat/lng.
I would recommend looking into marker clustering personally. This seems to be the route to go in these situations if you don't want to have a marker on your map with the incorrect location and still want the end user to be able to know that their are multiple markers on the same location.
Hope this helps.
I have a marker on a Google Map using the v3 Javascript API that is beneath another marker. When I click on the topmost marker, I would like to have the click event bubble up (down?) to the bottom-most marker with the goal of providing an optional menu for the user to choose which marker they meant to click.
Is this possible with the google.maps.event.addListener for click events?
Can I query the map for all markers that are contained by a given location, apart from hacking it myself?
As far as I know there isn't a builtin way to cycle through the markers on the click event. You can control the zIndex of each marker via the MarkerOptions which will override the default stacking based on vertical position:
All markers are displayed on the map
in order of their zIndex, with higher
values displaying in front of markers
with lower values. By default, markers
are displayed according to their
vertical position on screen, with
lower markers appearing in front of
markers further up the screen.
It think you will have to code this up yourself. I would love to hear how that goes.