gps

Distance between two GPS locations and also trace a route line between them

由 随声附和 提交于 2019-12-08 05:08:14
问题 i tried to find distance between two GPS locations and i got the way using MKReverseGeocoder... now,how can i trace a path between those two locations.. suggestions will be highly appreciated.. Thanks in advance.. 回答1: and for distance from two location just use bellow line to get distance CLLocationDistance distance = [yourCurrentLocation distanceFromLocation:yourDestinationLocation]; here yourCurrentLocation and yourDestinationLocation is CLLocation variable and It Returns the distance (in

Use awk to convert GPS Position to Latitude & Longitude

由 霸气de小男生 提交于 2019-12-08 04:30:28
问题 I am writing a bash script that renames files based on EXIF headers. exiftool returns the following GPS Position string, which I need to format into Latitude/Longitude coordinates for use with Google Maps API. GPS Position : 40 deg 44' 49.36" N, 73 deg 56' 28.18" W Google Maps: https://maps.googleapis.com/maps/api/geocode/json?latlng=40.7470444,-073.9411611 This is my code awk -v FS="[ \t]" '{print $0,substr($1,length($1),1)substr($2,length($2),1)}' $1 \ | sed 's/\xc2\xb0\([0-9]\{1,2\}\).\(

HOW TO: Read out GPS attached via USB (VB.NET) [closed]

由 亡梦爱人 提交于 2019-12-08 04:26:45
问题 Closed . This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed 4 years ago . How can i read out GPS-Data from a GPS-USB-Device via VB.NET? 回答1: it took me a while to gather all information and code-snippets to read latitude/longitude coordinates from a GPS attached via USB. so here is the resulting class clsGpsLocation. it includes a function that checks com ports to

iPhone App :show direction using Map

由 怎甘沉沦 提交于 2019-12-08 04:26:06
问题 in My iPhone App How Can I show directions from current location to End Point? is there any built in component or facility available on iphone which can show maps and direction using GPS and built in compass? 回答1: If you mean taking the user to the maps application based on two points, then you can do it like this: Create an NSURL that looks like this: NSURL *URL = [NSURL URLWithString:@"http://maps.google.com/maps?saddr=%f,%f&daddr=%f,%f"]; You plug in your starting address and destination

GPS Intermediate Driver Slowing down the data from a virtual serial port driver

由 你说的曾经没有我的故事 提交于 2019-12-08 03:47:36
问题 Follow on from - GPS Intermediate Driver Issues The above was not successfully answered and feel I have new information over the issue to go for a new question. The issue I am facing is the speed of which data is being delivered by the GPS Intermediate Driver. I have successfully used Pocket Putty to read the serial ports and see the exact information been exposed. COM 1 - GPS Intermediate Driver COM 6 - Serial port to PC (Input data manually) COM 8 - Virtual serial port for GPS hardware.

C, Calculating the distance between two GPS locations?

由 谁都会走 提交于 2019-12-08 03:20:23
问题 If I have two GPS locations, say 51.507222, -0.1275 and 48.856667, 2.350833, what formula could I use to calculate the distance between the two? I've heard a lot about a haversine formula, but can't find any information about it, or how to apply it to C. I've written the following code, however, it's very innacurate. Anybody know why? I can't figure it out. The problem comes from the function itself, but I don't know what it is. float calcDistance(float A, float B, float C, float D) { float

Android GPS Provider

由 僤鯓⒐⒋嵵緔 提交于 2019-12-08 03:05:25
I'm developing an android application that involves the detection of the users' location. What I would like to know is, how does this -> LocationManager.GPS_PROVIDER work? Does it uses the GPS system in the phone or does it uses the mobile company's area network location? Whenever I turn on the GPS system in my phone, the map would not load. It will only be able to detect & pinpoint the location when I deactivate it. I think the application is tapping into the GPRS or something. Thanks. LocationManager.GPS_PROVIDER uses GPS and LocationManager.NETWORK_PROVIDER uses mobile network. Map

Get Multiple Cell IDs for location using Cellular Towers C# Windows Mobile

由 假装没事ソ 提交于 2019-12-08 03:02:24
问题 Following Microsoft's documentation on RIL I've been able to implement a code that retrieves Cell ID, LAC, MCC, MNC and Signal Strength. Using these data and http://www.opencellid.org/ I'm able to retrieve latitude and longitude of that cell tower. The problem is that I need to implement some kind of triangulation algorithm to get a more accurate position. But before even thinking in triangulation, I'm going to need more than one tower ID to work with. How can I get them? I tried to create an

GPS timeout in android

由 扶醉桌前 提交于 2019-12-08 02:15:25
问题 In blackberry, we use a timeout to get the location, so that if it doesnt retun location in that much time period, we get to know. But in Android, there is no concept of timeout, can anyone please tell the alternative, that we can find out that after this much time there is no location update from GPS. 回答1: You can use two threads for this timeout. One thread tries to get the GPS fix and the other (timeout) thread, once it reaches the timeout specified, removes the registration of your

Calculate X and Y position on a PNG Map from GPS Coordinate

由 喜你入骨 提交于 2019-12-08 02:02:30
问题 I'm implementing a custom maps (image with size map_width and map_height) on an iPhone app and i try to show the current user position on this map (current_long and current_lat) I have 2 references points with a known GPS coordinates (ref1_long, ref1_lat, ref2_long and ref2_lat) and known X, Y positions in pixels (ref1_x, ref1_y, ref2_x and ref2_y) My question is: how to calculate the current_x and current_y according to these informations ? 回答1: You need to know the projection of the map.
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