latitude-longitude

问题 F3 c8 42 14 - latitude //05.13637° should be nearby this coordinate 5d a4 40 b2 - longitude //100.47629° should be nearby this coordinate this is the hex data i get from GPS device, how to convert to readable coordinate? i don't have any manual document.please help.thanks 22 00 08 00 c3 80 00 20 00 dc f3 c8 42 14 5d a4 40 b2 74 5d 34 4e 52 30 39 47 30 35 31 36 34 00 00 00 this is my full bytes i received,but the engineer told me that F3 c8 42 14 is latitude and 5d a4 40 b2 is longitude 回答1: I

问题 F3 c8 42 14 - latitude //05.13637° should be nearby this coordinate 5d a4 40 b2 - longitude //100.47629° should be nearby this coordinate this is the hex data i get from GPS device, how to convert to readable coordinate? i don't have any manual document.please help.thanks 22 00 08 00 c3 80 00 20 00 dc f3 c8 42 14 5d a4 40 b2 74 5d 34 4e 52 30 39 47 30 35 31 36 34 00 00 00 this is my full bytes i received,but the engineer told me that F3 c8 42 14 is latitude and 5d a4 40 b2 is longitude 回答1: I

问题 i have the following two tables:- GeoShapes GeoShapeId INT IDENTITY Name VARCHAR(100) ShapeFile GEOGRAPHY [ this is a closed Polygon of Lat/Longs ] CrimeLocations CrimeLocationId INT IDENTITY LatLong GEOGRAPHY [ this is a Lat/Long Point ] Now, i have around 10K GeoShape results and around 500CrimeLocations. I'm trying to figure out which GeoShapes all 500 crime lat/long points exist inside of. :( I just don't get it! I was trying to do an STIntersects on a subquery but that didn't work. Any

问题 This question already has answers here : Closed 6 years ago . Possible Duplicate: Distance between geopoints I have some latitudes and longitudes and i need to find the nearest locations with these latitude and longitudes from my current place 回答1: try this, public class getDistanceList { /** * * @param lat1 Latitude of the First Location * @param lng1 Logitude of the First Location * @param lat2 Latitude of the Second Location * @param lng2 Longitude of the Second Location * @return distance

问题 This question already has answers here : Closed 6 years ago . Possible Duplicate: Distance between geopoints I have some latitudes and longitudes and i need to find the nearest locations with these latitude and longitudes from my current place 回答1: try this, public class getDistanceList { /** * * @param lat1 Latitude of the First Location * @param lng1 Logitude of the First Location * @param lat2 Latitude of the Second Location * @param lng2 Longitude of the Second Location * @return distance

问题 I use Google Maps js API v3. I can show directions with waypoints based on this. What I want is getting the points of the direction. Lets say the direction line goes from Budapest to Warsaw. I want to get all latitude and longitude on that line. But I don't find any build in function or workaround for this. I don't copy code here as the tutorial works for me, I can start from that. (Of course it isn't a good idea to make lot of waypoints.) I've seen this question. It isn't solution for my

问题 I've got an sqlite db with long and lat of shops and I want to find out the closest 5 shops. So the following code works fine. if(sqlite3_prepare_v2(db, sqlStatement, -1, &compiledStatement, NULL) == SQLITE_OK) { while (sqlite3_step(compiledStatement) == SQLITE_ROW) { NSString *branchStr = [NSString stringWithUTF8String:(char *)sqlite3_column_text(compiledStatement, 0)]; NSNumber *fLat = [NSNumber numberWithFloat:(float)sqlite3_column_double(compiledStatement, 1)]; NSNumber *fLong = [NSNumber

问题 How to find the nearest 100 meters latitude and longitude depending upon the current location, i have created a database in SQLITE3 which consists of set of latitudes and longitudes and corresponding there location name. Depending upon the current location i want to fetch the nearest 100 meters latitude and longitude in objective C, I am using the following code to get the Current location, - (void)viewDidLoad { [super viewDidLoad]; databaseName = @"searchdata.sql"; NSArray *documentPaths =

问题 I am developing an application that is supposed to show addresses that are in a specific distance of a location. I know how to find the distance between two points, but the problem is I am not sure what would be the best approach in terms of performance. One way is to retrieve all addresses and check them one by one toward the selected address in back-end but is there any way to minimize the number of items that I retrieve from database, rather than using the memory? whats the best approach

问题 Need help here. I am trying to create a new column that will list the number of restaurants with in 200 meters of a restaurant using latitude and longitude. I couldn't find anything on stackoverflow, and I am no R ninja. Any help would be appreciated! head() business_id restaurantType full_address open city 1 --5jkZ3-nUPZxUvtcbr8Uw Greek 1336 N Scottsdale Rd\nScottsdale, AZ 85257 1 Scottsdale 2 --BlvDO_RG2yElKu9XA1_g Sushi Bars 14870 N Northsight Blvd\nSte 103\nScottsdale, AZ 85260 1