gps

Distance for GPS Application [duplicate]

由 孤街浪徒 提交于 2020-01-13 15:55:15
问题 This question already has answers here : Closed 7 years ago . Possible Duplicate: How to track distance via GPS on Android? I have designed a GPS application and its telling my location well. But Now I want to include more feature. How I will make a radius there? to have a surrounding area of 5 or 6 km! How I can mention the distance between a place on that area and my place? 回答1: I feel like this question is starting to turn into a lot of questions. I decided to tackle this answer by

Distance for GPS Application [duplicate]

由 最后都变了- 提交于 2020-01-13 15:53:36
问题 This question already has answers here : Closed 7 years ago . Possible Duplicate: How to track distance via GPS on Android? I have designed a GPS application and its telling my location well. But Now I want to include more feature. How I will make a radius there? to have a surrounding area of 5 or 6 km! How I can mention the distance between a place on that area and my place? 回答1: I feel like this question is starting to turn into a lot of questions. I decided to tackle this answer by

Distance for GPS Application [duplicate]

由 穿精又带淫゛_ 提交于 2020-01-13 15:53:14
问题 This question already has answers here : Closed 7 years ago . Possible Duplicate: How to track distance via GPS on Android? I have designed a GPS application and its telling my location well. But Now I want to include more feature. How I will make a radius there? to have a surrounding area of 5 or 6 km! How I can mention the distance between a place on that area and my place? 回答1: I feel like this question is starting to turn into a lot of questions. I decided to tackle this answer by

iPhone SDK: Do I need to ask user for permissions to use GPS?

由 独自空忆成欢 提交于 2020-01-13 09:56:05
问题 In my iPhone application I need to use GPS (CoreLocation to be exact) to get current position of the device. I know that most (if not all) applications using GPS have a popup implemented asking the user to allow GPS access. Is that done automatically by the iPhone SDK or should I implement such functionality myself? I've tried to run my app on iPhone Simulator and it didn't ask for permissions at all so I'm wondering if the same thing will happen on the actual phone. And if I implement that

android - eclipse: display google maps using coordinates obtained using gps

由 一世执手 提交于 2020-01-13 06:11:34
问题 I am trying to create an app that will obtain the users location via gps, display the users location in google maps, and then update after a certain amount of time/movement. I currently have an app that will obtain the users location via gps and update itself every 10meters/10,000 miliseconds, but currently all it does is display what the coordinates are. I have it set up to connect to google maps, but at the minute it is simply setting the map to some coordinates that I have manually entered

New Android Geofence Api - Sample code does not alert/notify when at location

由 こ雲淡風輕ζ 提交于 2020-01-12 03:51:32
问题 I need some clarity on the sample code supplied with Geofence guide as posted here : https://developer.android.com/training/location/geofencing.html I ran the code and I see that geofences are created correctly, but what I really want is a way to get alerted when I drive to those geofenced locations. Right now, when I go past those geofenced spots, nothing happens (ReceiveTransitionsIntentService does not get called), no notifications nothing. Do I also have to listen to periodic location

fake Geolocation in chrome automation

由 ﹥＞﹥吖頭↗ 提交于 2020-01-11 12:54:08
问题 I need to automate geolocation in chrome using python script. I have to fake the latitude and longitude. I followed some links in stackoverflow but they gave errors. chromeDriver.executeScript("window.navigator.geolocation.getCurrentPosition=function(success){var position = {"coords" : {"latitude": "555","longitude": "999"}};success(position);}"); is there any other way i can change the location? 回答1: You have to escape double quotes inside a string please try with below code: driver.execute

趣味GPS

由 痞子三分冷 提交于 2020-01-11 12:52:17
作者：Vamei 出处：http://www.cnblogs.com/vamei 欢迎转载，也请保留这段声明。谢谢！ 简介 GPS的全称是全球定位系统(the Global Positioning System)。它属于美国政府，并由洛杉矶的联合项目办公室(JPO, Joint Program Office)管理。 1957年，苏联发射第一颗人造卫星。为了确定卫星的位置，多个地面基站同时观测卫星发出的电波，并据此计算从基站到卫星的距离。这个想法很快被美国人发展下去: 既然多个地面基站可以确定空中的卫星位置，那么空中的多个基站也就可以确定地面上的位置了。GPS卫星组成的网络就构成这样的一个空中基站网络。地面上的使用者只需要接收来自多个GPS卫星的信号，就可以计算出自己所在的位置。第一颗GPS卫星发射于1978年2月22日，最早的GPS系统只进行二维定位，但很快，GPS系统允许包括高度在内的三维定位。 出埃及记，上帝是GPS？ GPS产生的初期主要是由美国国防部赞助。显而易见，这样一个全天候，不受天气干扰的全球定位系统，有着极为重要的军事意义。GPS系统第一次大显身手也是在海湾战争。当时的GPS系统还没有完成，所以美国空军调整了GPS卫星的轨道，以便更好的服务于海湾地区。有一些部队，比如坦克部队，并没有使用过GPS接收器，甚至于用胶布把GPS接收器固定在车内。即使如此

Restricting plot to shapefile boundaries in r

由 给你一囗甜甜゛ 提交于 2020-01-11 09:55:18
问题 I have analysed a dataset of GPS points using density.ppp to generate a sort of heatmap of intensity of the points, as shown below: However, I would like the image to be limited to the borders of the shapefile, similar to below: The first image is called as x <- readShapePoly("dk.shp") xlim<-c(min(912),max(920)) ylim<-c(min(8023),max(8030)) a<-ppp(cases@coords[,1], cases@coords[,2], xlim, ylim, unitname=c("km")) plot(density.ppp(a, 0.1), col=COLORS) plot(x, add=T, border="white") where cases

Converting coordinates into map addresses

由 那年仲夏 提交于 2020-01-11 08:04:38
问题 I am developing a GPS Server and tracking system: How can I convert latitudes and longitudes data got from a GPS tracking device into address data so that the client application report be displaying road names instead of coordinates? How can I map the coordinate data so that tracker position be displayed on a map i.e. google maps or vector maps? I'll highly appreciate your answers or suggestions 回答1: Use a reverse geocoder. http://code.google.com/apis/maps/documentation/geocoding/
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