geopoints

问题 In my UWP app, I use a Geopoint class: using Windows.Devices.Geolocation; . . . List<Geopoint> locations; In a Winforms app, this is not available - Geopoint is not recognized. Is there an analogous class available for Winforms apps? The same is true for the BasicGeoposition object - not recognized. UPDATE I want the GeoPoint and BasicGeoposition classes so I can do things like this: BasicGeoposition location = new BasicGeoposition(); location.Latitude = 36.59894360222391; // Monterey == 36

问题 I am having the hardest time querying a GeoPt field with Objectify. I made sure there's an @Index annotation about the GeoPt field. However, the statement below doesn't seem to work ofy().load() .type(GeoStat.class) .filter("geoPt.latitude >=", neLat) .limit(10); Is querying GeoPt field possible in Objectify? 回答1: The datastore does not support querying a GeoPt in this way. If you wish to query on latitude, index it separately (possibly writing to a private field in an @OnSave method).

问题 Is there anyway i can escape GeoPoint as first order in this postion? If i remove GeoPoint from orderby it triggered the below error and if i put the GeoPoint as first orderby, as instructed as below, it mislead the second orderby priceSort.. Uncaught Error: Invalid query. You have a where filter with an inequality (<, <=, >, or >=) on field 'GeoPoint' and so you must also use 'GeoPoint' as your first Query.orderBy(), but your first Query.orderBy() is on field 'priceSort' instead. const

问题 I want to save address ( a relational object ) with geopoints, so as to later retrieve all Events which have address near to provided location, it will be all based on coordinates. Using following piece of code - $address = new ParseObject("Address"); $point = new ParseGeoPoint(23.80, -120.90); $address->set("location", $point); $address->save(); Type of location in my db is geopoint, but it gives me continuous error- Internal Server Error . Error code :exception 'Exception' with message 'Can

问题 I'm trying to develop application that uses GPS locations for services. Each service should has a location (GeoPoint). I'm trying to get my current location and save it to parse database. I tried to use getCurrentLocationInBackground but unfortunately there is not guide on how to use this. I used the below code but unfortunately it't not working. Please help! void getLocation() { // ParseGeoPoint location = null; Criteria criteria = new Criteria(); criteria.setAccuracy(Criteria.ACCURACY_LOW);

问题 I have the following classes public class MyLayer { public List<MyLocation> Locations { get; set; } } public class MyLocation { public string Name { get; set; } public MyCoordinate Coordinate { get; set; } } public class MyCoordinate { public double Lat { get; set; } public double Lon { get; set; } } And this code to index objects var node = new Uri("http://localhost:9200"); string indexName = "geopoint-tests2"; var settings = new ConnectionSettings( node, defaultIndex: "geopoint-tests2" );

问题 I need to implement a GeoPointField with Doctrine2. It seems that Zend and Doctrine don't support it natively... Is there a best practice for validating such an input? In the database I'd use a simple string field, right? 回答1: /^(\-?\d+(?:\.\d+)?),?\s*(\-?\d+(?:\.\d+)?)$/ This regexp validates and captures GEO input: Latitude, Longitude Latitude Longitude Coords copied directly from GoogleMaps 来源： https://stackoverflow.com/questions/14067212/zend-framework-2-doctrine-2-how-to-use

问题 In my app I am trying to make it possible to calculate the distance a person walks. To do this I have created a LocationHelper class that should get me the current GeoPoint every 30 seconds or 10 meters. I already have a method that returns the distance in meters between two GeoPoints that I know works, because I have used it in a previous project. I also have an Activity called WalkActivity where I call the method getDistance() in LocationHelper and display it in a TextView that is updated

问题 I am using PFQueryTableViewController as part of ParseUI to load a table of objects based on the currentUser's geolocation. I have seen several other (older) forum posts (like here) detailing that the queryForTable function should return nil if a value like currentLocation:PFGeoPoint? is nil. Then wait on the background process in viewDidLoad to get the PFGeoPoint and loadObjects() , thus calling the queryForTable function again. I am seeing others say that Swift's ParseUI libraries may not

问题 I have a DB with Geopoints. I need to do a query to get all geopoints in the radius of X meters of me. How can i do this? I think the best way is get the minimal lat/long possible point, and the max lat/long point and get all of them for which: geopoint > minPoint AND geopoint < MaxPoint Other ideas? 回答1: You can use this class to get de distance between to points: How to use: double distInKm = GeoMath.getDistance(12.345, -8.788, 12.33, -8.77); Or, if point1 and point2 are GeoPoint: double