maps

Placing thousands of pins on google map in android app

由 落爺英雄遲暮 提交于 2019-12-05 07:52:59
问题 I'm working with my programmers and have an issue that we're trying to find a simple / opensource solution to as i'm sure others have come across the same issue before... In simple terms we're trying to place thousands of pins on a google map within an android application.... We managed to solve the problem of placing thousands of pins on a google map within xcode by using a clustering algorithm that placed them in clusters and gave the number of pins in a particular area, then as you zoom in

How to add maps in java GUI (like GMap.net for c#)?

由 不问归期 提交于 2019-12-05 07:26:41
问题 C# has a a nice library/api to use for creating/using maps with winforms found at Gmap.net Does java have any libraries like this? The closest thing I've found was worldwind but this doesn't look half as good as what GMap.net does in winforms 回答1: These libraries might help Generic Swing component: https://github.com/msteiger/jxmapviewer2 Integration with JavaFX: http://fxexperience.com/2011/05/maps-in-javafx-2-0/ 来源： https://stackoverflow.com/questions/15709870/how-to-add-maps-in-java-gui

笔记：Map

由 放肆的年华 提交于 2019-12-05 07:22:35
JDK1.8：List -> Map： 　　　　Map<String, String> maps = userList.stream().collect(Collectors.toMap(User::getId, User::getAge, (key1, key2) -> key2)); 来源： https://www.cnblogs.com/unknownCode/p/11913512.html

Pie charts clustering on Google Maps [batchgeo-like]

由 青春壹個敷衍的年華 提交于 2019-12-05 07:21:28
问题 Anybody knows how to remake something similar to what Batchgeo does when clusters/groups markers with dynamic pie charts? Example: batchgeo map with pie clustering Thanks, Regards 回答1: I don't have a full how to for you, but do have some pointers which might help you and appear to be used by BatchGeo. I would study the cluster example on Google maps: https://developers.google.com/maps/articles/toomanymarkers Which covers clustering pretty well... then you would need to look at changing the

illegal state exception when trying to change a marker on a Google Maps v2 Api from a Google Cloud Messaging message

由 青春壹個敷衍的年華 提交于 2019-12-05 07:17:42
I am writing an android app and I have markers on a Google Map that should be changed to a position that I receive by GCM. I have a global static List in which I save the marker together with an id and the position. I can change the positions of the Objects in the list in my GCMBaseIntentService when I receive a message, but when I want to execute the following code: mMarker.setPosition(new LatLng(member.getLatitude(),member.getLongitude())); I get the following Exception: 01-13 18:52:38.118: E/AndroidRuntime(7605): FATAL EXCEPTION: IntentService[GCMIntentService-1041237551356-1] 01-13 18:52

Any disadvantage to using arbitrary objects as Map keys in Java?

由 落爺英雄遲暮 提交于 2019-12-05 06:36:16
I have two kinds of objects in my application where every object of one kind has exactly one corresponding object of the other kind. The obvious choice to keep track of this relationship is a Map<type1, type2> , like a HashMap. But somehow, I'm suspicious. Can I use an object as a key in the Map, pass it around, have it sitting in another collection, too, and retrieve its partner from the Map any time? After an object is created, all I'm passing around is an identifier, right? So probably no problem there. What if I serialize and deserialize the key? Any other caveats? Should I use something

Google map 入门

由 非 Y 不嫁゛ 提交于 2019-12-05 06:30:27
1 <!DOCTYPE html> 2 <html> 3 <head> 4 <meta name="viewport" content="initial-scale=1.0, user-scalable=no" /> 5 <style type="text/css"> 6 html { height: 100% } 7 body { height: 50%; margin: 0; padding: 0 } 8 #map_canvas { height:100% ;width: 100%;} 9 </style> 10 </head> 11 <body onload="initialize()"> 12 <div id="map_canvas" ></div> 13 14 </body> 15 <script type="text/javascript"> 16 function initialize() { 17 var mapOptions = { 18 center: new google.maps.LatLng(39.92, 116.46), //（纬度，经度） 19 zoom: 8, 20 mapTypeId: google.maps.MapTypeId.ROADMAP 21 }; 22 var map = new google.maps.Map(document

谷歌地图开发填坑记录

由 别说谁变了你拦得住时间么 提交于 2019-12-05 06:29:29
1.坑一：引用 <script src="http://ditu.google.cn/maps/api/js?key=申请的key&callback=initMap&libraries=drawing" async defer></script> （刚开始用的.com的地址，发现不能翻墙，地图出不来） （后台换成https://ditu.google.cn/maps/api/js，卫星地图出不来） 最后使用的这个http://ditu.google.cn/maps/api/js。终于没问题了 2.坑二：使用卫星地图 map = new google.maps.Map(document.getElementById('map'), { mapTypeControl: false, //地图类型控件 fullscreenControl: false, //全屏控件 streetViewControl: false, //是否显示街景小人 scaleControl: false, //是否显示地图缩放控件 zoomControl: false, center: { lat: 33.42, lng: 107.40 }, zoom: 4 ,mapTypeId: 'hybrid'//显示普通视图和卫星视图的混合显示 // ,mapTypeId: 'satellite' });//刚开始使用的

怎么编写properties文件

由 烂漫一生 提交于 2019-12-05 06:24:52
1. 注释 在properties中注释是采用#号开头的方式来进行注释的 2. 编写properties文件 在properties中，一行就是一个键值对，简单的理解就是一行可以保存一个变量，键和值之间用=号隔开 记住，不用打双引号（“”）打了的话读取的时候会读取到（“”）除非你自己需要双引号 不要有重复的键，要不然后面的值会覆盖前面的值 3. 部分例子 # String person.last-name=john # int person.age=112 # boolean person.boss=false # Date person.birth=2019/11/12 # List<Object> person.dogs[0].name=jj person.dogs[0].age=111 person.dogs[1].name=tom person.dogs[1].age=111 # Map<String, Object> person.maps.Jack=jackc2 person.maps.Iris=yili8 person.maps.Panda=pandax person.maps.Adun=gengwang person.maps.Caedmon=chuankwa # List person.lists[0]=1 person.lists[1]=2 person

jvectormap region colors

由 一个人想着一个人 提交于 2019-12-05 05:49:19
Im using the jvectormap plugin , and I am trying to set the colors of each of the regions on the map. However, after applying the code below the map is displayed but with no colours applied. It just shows the map in white. I have read multiple examples and questions on this matter, but I cant seem to get it to work for me. Example 1 of setting random colours on a map. Documentation Similar question to mine, however it doesn't solve my problem. jQuery('#mapDiv').vectorMap({ map: 'au_merc_en', backgroundColor: 'none', colors: { AU-SA: '#4E7387', AU-WA:'#333333', AU-VIC:'#89AFBF', AU-TAS:'#817F8E
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