maps

Converting image X,Y coordinates to longitude and latitude?

删除回忆录丶 提交于 2019-12-07 00:48:30
问题 I have set values of minimum longitude and latitude of a specific static map image. That map image is a cut of some country. /** * Maximum longitude value of the map */ private float mapLongitudeMax; /** * Minimum longitude value of the map */ private float mapLongitudeMin; /** * Maximum latitude value of the map */ private float mapLatitudeMax; /** * Minimum latitude value of the map */ private float mapLatitudeMin; And I have a BufferedImage called mapImage . I have a method that I wrote

google maps marker array?

随声附和 提交于 2019-12-06 22:05:30
Hi guys and girls if any :)) this piece of code creates a null pointer exception I would like to put a couple of markers in MO LAT = Double.parseDouble(PartA); LNG = Double.parseDouble(PartB); LatLng Standort = new LatLng(LAT, LNG); MO[y] = mMap.addMarker(new MarkerOptions() .position(Standort) .icon(BitmapDescriptorFactory.fromResource(R.drawable.kreis))); builder.include(MO[y].getPosition()); Array type expected - found com.google.android.gms.maps.model.maker Definition private static Marker MOrt = null; I don't know my answer help you out or not. First of all declare array , than add points

Google Maps API vs Google Maps Engine?

大城市里の小女人 提交于 2019-12-06 19:25:26
问题 I'm brand new to web technologies, and in researching a web app that I want to create I got a little bogged down. I want to be able to use a Google Map on my site, including the functionality that allows you to use layers and draw shapes and lines on top of it, but I'm confused at the difference between the Google Maps API and Google Maps Engine and which one would best suit me. Is one of those a better option for me? There seems to be a lot of red tape on getting Maps Engine for a site, but

币小站日志2--我的“币小站”是否违法?爬虫的法律边界在哪里?

空扰寡人 提交于 2019-12-06 18:14:41
币小站日志2--我的“币小站”是否违法?爬虫的法律边界在哪里? 案例分享 我在github上找到了一个项目,10日前才更新过,汇总了一些和爬虫相关的按键( https://github.com/HiddenStrawberry/Crawler_Illegal_Cases_In_China ) 10天前是最后一次提交。读取之后发现 爬虫的法律边界到底在哪里? 软件在现实生活中是在太重要了,而现在又是个数据为王的时代。法律可能事无巨细的面面俱到 但是法律没规定不代表什么软件就真的可以为所欲为 ,我们真实世界里还是有写规则无论是在软件的数字世界,还是在游戏的虚拟世界都是应当遵守的 1、损害他人物权的事不能做。 比如我看你家数据好多,我想拿来用用可以么?如果你没有不同意,那我觉得是可以的,就像我想看看你家院墙的画,你是不能告我的。但是虽然你家院墙在大街边,但我也不能把它推倒了看。对应到爬虫中,你爬人家的数据,加入损害到人家的服务器正常运行了,或者用***到别人机器人里面把别人数据删了。这就一定是不能做的, 所以我们写爬虫的时候,不要过于追求效率,慢点没关系,拿别人数据的同时也尊重下别人。别开几百个线程把人家服务器搞死了。 2、别人不让看的数据就不要爬。 比如人家明明是vip才能看的数据,你非要爬出来让所有人都看得到。用院墙上的画的例子来说,别人既然用布蒙上了,你就不能把布撕开

SpringBoot2.2版本配置绑定

只愿长相守 提交于 2019-12-06 16:52:50
具体可以查看这篇:https://www.cnblogs.com/dalianpai/p/11772382.html 原始的 /** * @author WGR * @create 2019/12/6 -- 15:14 */ @Component @ConfigurationProperties("person") public class Person { private String lastName; private Integer age; private Boolean boss; private Map<String, Object> maps; private List<Object> lists; @Override public String toString() { return "Person{" + "lastName='" + lastName + '\'' + ", age=" + age + ", boss=" + boss + ", maps=" + maps + ", lists=" + lists + '}'; } @Override public int hashCode() { return Objects.hash(lastName, age, boss, maps, lists); } public String getLastName(

android generate bitmap from google map without mapView

懵懂的女人 提交于 2019-12-06 16:52:46
问题 I want to generate a bitmap file using google maps without passing data through a mapView, like a background thread (downloading tiles in order to write the bitmap) Does anyone has an idea? an example is: entering coordinates and after clicking a button, the .png is generated in the SD Card, containing the COMPLETE loaded tiles. any proposals? thanks!!! 回答1: This method returns url with map image public static String getMapUrl(Double lat, Double lon, int width, int height) { final String

HTML5 Geolocation API和Google Maps API结合实现路线导航

百般思念 提交于 2019-12-06 16:52:42
HTML5提供了地理位置定位功能(Geolocation API),能确定用户位置,我们可以借助HTML5的该特性开发基于地理位置信息的应用。本文结合实例给大家分享如何使用HTML5,借助百度、谷歌地图接口来获取用户准确的地理位置信息。 定位功能(Geolocation)是HTML5的新特性,因此只有在支持HTML5的现代浏览器上运行,特别是手持设备如iphone,地理定位更加精确。首先我们要检测用户设备浏览器是否支持地理定位,如果支持则获取地理信息。注意这个特性可能侵犯用户的隐私,除非用户同意,否则用户位置信息是不可用的,所以我们在访问该应用时会提示是否允许地理定位,我们当然选择允许即可。 function getLocation(){ if (navigator.geolocation){ navigator.geolocation.getCurrentPosition(showPosition,showError) }else{ alert("浏览器不支持地理定位。") } } 上面的代码可以知道,如果用户设备支持地理定位,则运行 getCurrentPosition() 方法。如果getCurrentPosition()运行成功,则向参数showPosition中规定的函数返回一个coordinates对象,getCurrentPosition()

How to create a simple draggable marker in OpenLayers

天大地大妈咪最大 提交于 2019-12-06 15:43:14
Very simple question, how can I create a draggable marker in an OpenLayers map, and get the latlon when its been dragged. From google, it seems that you can have draggable vectors, but not draggable markers. I've seen some references to OpenLayers.Control.DragMarker , but this doesn't seem to be in the "core" library. It's used in this example but that seems to be using a custom OpenLayers JS file, so I have no idea how to go about including that in my code. Code thus far (to add a simple marker): var layer = new OpenLayers.Layer.TMS( "TMS The Layer","", { url: '', serviceVersion: '.',

What is the “Simplest” way to add a scale to a map in ggmap

◇◆丶佛笑我妖孽 提交于 2019-12-06 15:34:17
问题 For real, I searched everywhere, and coding a scale in a map is so hard... Adding scale bar to ggplot map Is there a way to add a scale bar (for linear distances) to ggmap? Could it be possible to make a simple line that scale differently to the zoom preset that we select in the function? I have this simple map: library(ggmap) pngMAP_df2 = get_map(location = c(-90.5, -0.5), source = "google", zoom = 8,color = "bw") s = ggmap(pngMAP_df2) s I wanted to add as well GPS coordinate in this graph:

Windows Phone 8 - HowTo display current position on the map

被刻印的时光 ゝ 提交于 2019-12-06 15:23:01
As the title suggest I am struggeling with the display of the current location of the user on the map. Afaik there a two ways to display the current user location: In Code: create a ellipse, set it as content of a MapOverlay , set the GeoCoordinate of the MapOverlay, add this overlay to a MapLayer and add this to the map - but I cannot access the MapOverlay anymore and thus I cannot change (update) the position of the user. Is there a way to update the user position without having to redraw all the map layers? XAML and Code: In Windows Phone 7 I was able to add a Pushpin to the map and let the