google-maps

问题 So I have a map here How can I, using Google Maps API, detect whether or not a given coordinate is within that polygon? Is that possible? Thanks in advance. 回答1: Yes it is possible. See this function: http://github.com/tparkin/Google-Maps-Point-in-Polygon 回答2: Google provides one already var bermudaTriangle = new google.maps.Polygon({ paths: [ new google.maps.LatLng(25.774, -80.190), new google.maps.LatLng(18.466, -66.118), new google.maps.LatLng(32.321, -64.757) ] }); google.maps.event

问题 I have a problem integrating google map in fragment in android. I know how to do it in activity but fragment reference on this site are very old and not working in 2018. I don't have any error.below is fragment file. Any help will be highly appreciated. I have added API key and proper manifest file. package com.example.narmail.truck30mint.Api.Fragments; import android.Manifest; import android.content.Context; import android.content.DialogInterface; import android.content.pm.PackageManager;

问题 I want to write an app to display markers from one of my custom maps in Google Maps. How do I access this data? There must be an API for it but I can't find information anywhere. 回答1: If you have created a Google My Maps map through the browser tools, you can just copy the link to your My Map and then pass it to the Google Map Application on the device. Intent intent = new Intent("android.intent.action.VIEW"); intent.setComponent(ComponentName.unflattenFromString("com.google.android.apps.maps

问题 I want to write an app to display markers from one of my custom maps in Google Maps. How do I access this data? There must be an API for it but I can't find information anywhere. 回答1: If you have created a Google My Maps map through the browser tools, you can just copy the link to your My Map and then pass it to the Google Map Application on the device. Intent intent = new Intent("android.intent.action.VIEW"); intent.setComponent(ComponentName.unflattenFromString("com.google.android.apps.maps

问题 I followed the tutorial here to add an inforwindow to the individual clusters of markercluster at any zoom level. http://krisarnold.com/2010/10/15/adding-info-windows-to-map-clusters-with-google-maps-api-v3/ I want to add the info of the markers (e.g. their 'title' s to a list displayed in the info window when clicked on the markercluster object.) contained in respective cluster. So if I have 3 clusters at a particular zoom level in view, each having 5 markers insider it. How do I display a

问题 I'm using google maps in my application, and I have a webserver with a databse filled with lat/lon values. I want to mark them on the map, but I also want to cluster them together if they are within a certain pixel-distance of eachother. I figure if I retrieve all my points from the database, I should be able to do something like this (pseudocode): clusters[]; while(count(points)) { cluster[]; point = points.pop(); boundingbox = pixelsToBB(point, pixeldistance, zoomlevel); query = "select *

问题 I'm using google maps in my application, and I have a webserver with a databse filled with lat/lon values. I want to mark them on the map, but I also want to cluster them together if they are within a certain pixel-distance of eachother. I figure if I retrieve all my points from the database, I should be able to do something like this (pseudocode): clusters[]; while(count(points)) { cluster[]; point = points.pop(); boundingbox = pixelsToBB(point, pixeldistance, zoomlevel); query = "select *

问题 I am trying to set up OpenLayers to not display the vector layer just before a zoom starts and make it reappear after a zoom ends. I have the zoom ends part already established like this: map = new OpenLayers.Map('map_element', { eventListeners: { "zoomend": mapEvent}}); function mapEvent(event) { if(event.type == "zoomend") { hide_vector_layer(); } } But I don't see any kind of event listener for the start of a zoom in the documentation. There is a "movestart" which covers moving, panning,

问题 I am trying to set up OpenLayers to not display the vector layer just before a zoom starts and make it reappear after a zoom ends. I have the zoom ends part already established like this: map = new OpenLayers.Map('map_element', { eventListeners: { "zoomend": mapEvent}}); function mapEvent(event) { if(event.type == "zoomend") { hide_vector_layer(); } } But I don't see any kind of event listener for the start of a zoom in the documentation. There is a "movestart" which covers moving, panning,

问题 I am trying to set up OpenLayers to not display the vector layer just before a zoom starts and make it reappear after a zoom ends. I have the zoom ends part already established like this: map = new OpenLayers.Map('map_element', { eventListeners: { "zoomend": mapEvent}}); function mapEvent(event) { if(event.type == "zoomend") { hide_vector_layer(); } } But I don't see any kind of event listener for the start of a zoom in the documentation. There is a "movestart" which covers moving, panning,