I've put together a little snippet on js fiddle so you can see what I am working with.
Basically I am trying to hook up a "Zoom" button so that once a path is created you can click the zoom button and the map zooms to fit the path. All of the answers I have found work by having an array of markers which I do not have. Any suggestions would be greatly appreciated.
http://jsfiddle.net/A3NBZ/
Well, in fact you do have an array of markers! It's stored in the Polyline that you're creating when the user is clicking on the map. To retrieve the points on which the user has clicked, simply use Polyline.getPath(). You can then add those points (as geocodezip mentioned) to a LatLngBounds object and use google.maps.Map.fitBounds() to adjust the map view to the given bounds.
Here's a simple implementation of the zoom method, based on the code example you've provided (you can see it working here).
function zoom() {
var bounds = new google.maps.LatLngBounds();
geodesic.getPath().forEach(function(latLng) {
bounds.extend(latLng);
});
map.fitBounds(bounds);
}
Similar to the examples you have seen with markers, add all the google.maps.LatLngs in the path to a google.maps.LatLngBounds object (using bounds.extend()), then call map.fitBounds on the resulting bounds object.
updated jsfiddle
Related
I am trying to filter my markers in my Here maps. I managed to hide my Noisemarkers on filter, but the weight of my clusterMarkers are still the same as before.
I was wondering if there is a way in Here maps to get the new weight of clusters after hiding some markers.
My current code is the following for hiding markers:
var markerHidden = getCorrectMarker(df.dealersArray[dealerNumberHidden], arrayOfMarkers);
if (markerHidden) {
markerHidden.setVisibility(false);
}
Is there a way to update all clusters on the map with only visible markers or not?
Visibility of marker can be set to False only at the map level, however at cluster level, no method defined for limiting the visibility.
Please refer API reference documentation of clustering:
https://developer.here.com/documentation/maps/topics_api/h-clustering-intro.html
I have a map that has markers programmatically placed on it based on values in my database. When you click on a marker, it will go to a detail page for that location.
My problem is that when the map is sufficiently zoomed out, markers that are close enough to each other appear as a single marker, in effect hiding some of the markers. Is there a way to tell programmatically whether a marker is part of a group of markers or is hidden/covered up by other markers?
My intention is to do something like this for each dynamically generated marker:
marker.addListener('click', function() {
// if marker is not hiding any other markers
window.location.href = markerURL;
// else if it is hiding markers/is part of a group of markers
map.setZoom(15);
map.setCenter(marker.getPosition());
});
I have checked the Marker API documentation, but can't seem to find any useful methods. getClickable and getVisible always return true in my case, regardless of whether a marker is covered by another marker. Any suggestions? Thank you!
I ended up going with MarkerClusterer to solve my problem. I was hoping for a simpler solution, but this turned out to be pretty simple after all.
The only thing I needed to add to my existing marker-generating code was a list: var markers = [];, and then I called markers.push(marker); on all of my markers. The final step was to create a new MarkerClusterer object:
var markerCluster = new MarkerClusterer(map, markers, options);
And MarkerClusterer handles the rest more or less (the options parameter is optional, but I used it to set the path to my images and set the maximum zoom level). Now, in the situations where previously my markers were stacked on top of each other, making it impossible to see or click certain markers at certain zoom levels, I instead see a cluster with a number indicating the number of markers in that cluster. Clicking the cluster icon will further zoom in, revealing my markers.
All of this was done following the simple usage example on their github page, but they have pretty good documentation too. Most of my time getting this to work right was actually spent styling the cluster icons to match my site's color scheme...
I am working on a Google Streetview indoor application using the Google Maps JS API. I am using panorama pictures that are available on Google Streetview. I sometimes want to programatically change the position, for instance when somebody clicks on a position in a small map. However, when I call panorama.getPosition() I automatically get redirected to a different position. I can actually see the position_changed event being triggered twice.
I already sort of found the cause of this issue. It has something to do with the starting/entrance positions Google maps uses for Streetview Indoor.
The two orange circles depict the two possible starting/entrance points into the building. When dropping the pegman over these circles you will enter the building in Streetview Indoor.
It looks like when these starting points exist, the Google Maps API does not let you programatically set the position to some position other then any of the starting points. It will always redirect you to one of the starting points. This is obviously not what I want.
//The starting/entrance position is lat: 52.089988, lng: 5.178041
//The position I want to go to
var goToPosition = {lat: 52.0898852, lng: 5.1780344};
//Position changed EventListener
google.maps.event.addListener(panorama, 'position_changed', function() {
var newPosition = panorama.getPosition();
console.log('changed position to:', newPosition.lat(), newPosition.lng());
});
//Calling setPosition with goToPosition
panorama.setPosition(goToPosition);
//Will result in two console.logs directly printed after another:
changed position to: 52.0898852 5.1780344 //goToPosition
changed position to: 52.089988 5.178041 //starting position
The console.logs show that it looks like the position is being changed twice directly after each other, ending the position at the starting position.
I'm wondering if any body else has encountered this problem and if there is a known workaround for this. I am in contact with the photographer that uploaded the panorama pictures to Google. Maybe there's something in the way these pictures are uploaded to Google and configured. I wonder if this can even be fixed in my application code, or if it's an API problem or even expected behavior.
Thanks!
I found the solution for my problem, partly thanks to #LilDevil's answer.
Each panorama for a position has a panorama ID. If you know the panorama ID in advance, it can be used to move to that position using setPano().
I store panorama ID together with the lat,lng of a position. When clicking on the map I calculate the known position that is nearest to the clicked position. I can then look up the panorama ID that belongs to this position and use it to move to that panorama using setPano().
This doesn't seem to be a very clean way to solve the problem, because the panorama ID might change over time (for instance when new panorama pictures are uploaded to Google Streetview). However, I couldn't find anything in the documentation that says this method shouldn't be used. The documentation says that this method should be used when dealing with custom panorama pictures, which is not the case in my situation. Also, in this specific situation we are in control of when new panorama pictures will be uploaded (because it's for Google Indoor) so I can change the stored panorama ID's if that happens.
You can't just set the panorama to any coords. You need to use getPanorama() with your start coords and a radius, to find the coords to the nearest panorama, then set the pano to those coords. Some examples on https://developers.google.com/maps/documentation/javascript/streetview?hl=en
Is there an equivalent in Baidu like fitBounds in GoogleMap?
I have multiple markers on a Baidu map and I would like to show all the markers with the proper positioning and zoom level.
Just stumbling upon this thread. The answer to this question is:
var points = [Point_1,...,Point_n];
map.setViewport(points);
points is simply an array containing objects of type BMap.Point that you want within the map viewport.
Docs: http://developer.baidu.com/map/reference/index.php?title=Class:%E6%80%BB%E7%B1%BB/%E6%A0%B8%E5%BF%83%E7%B1%BB
Although this answer worked for me, with the change of direct latlng object instead of BMap.Point object to make it work.
It is possible to show multiple markers on Baidu Map.
Check their example here
I have displayed Baidu Map with an area of 230x125 so I have shown the China on the area like below:
var map = new BMap.Map("id_of_map_loading_area");
var point = new BMap.Point(101.841797,35.433724); //China on the center of the area
map.centerAndZoom(point,3); // Change value 3 to see difference
map.enableScrollWheelZoom(); // Zoom effect to the map using mouse.
How can I set it up so when a user clicks the submit button, the map will resize itself to fit directions as it is on yelp maps when finding directions?
Thanks
Well, without much information in your question, just add a style modification in your map direction handler. In it's simplest form: But without knowing more about your particular setup, I can't do much more.
HTML:
<FORM onSubmit="findDirections()">
JavaScript:
function findDirections() {
// Change map width
document.getElementsById("directions_map").style.width = "600px";
// Do google maps lookup, etc
}
Do you mean how to set center and zoom of map to have direction fit in such a view? If so, you can obtain points of this direction, add them to create LatLngBounds (using the extend method) and use Map.fitBounds with prepared bounds as parameter.