I am working on functionality where I need to animate car driving on the map which is similar to what Uber has for customer application.
Current approach: I receive latest driver's coordinate from the api after particular polling interval, I use latest lat long and last known lat long to calculate directions using MKDirection. Currently I am able to animate car on this polyline received via directions api but I am not sure how to calculate heading to rotate car in a particular directions.
Note: Client's requirement is to use apple's native maps and api available and not to use Google Maps api.
Any insights on computing heading will be helpful.
Have you looked at this answer? https://stackoverflow.com/a/12696424/1364963
This should outline how to calculate a heading from two GPS coordinates.
Related
I just want some hint of how can I create an app in iOS which can do following.
When a user is at point X, user will click on start button so app will start a timer and track the movement. User will be on a horse and user needs to ride in a full circle. When user comes back to point X the app should draw the route taken by the user on the horse.
Aim is to ride completely in a circle. I want to make this app to
practice and see how close to a circle I ride.
I tried to look at GPS locator but I am not sure whether it will give me efficient results because the circle I ride can be as small as 60m or less in radius.
I don't know if iOS GPS can be this accurate. I read article on motion sensor and how to track rotation and acceleration.
But I am not quite sure how to use that to my advantage.
I just need some tips like which API to use etc.
Using the Standard Positioning Service one can achieve 15 meter
horizontal accuracy 95% of the time. This means that 95% of the time,
the coordinates you read from your GPS receiver display will be within
15 meters of your true position on the earth.
More Information click here
For integrate Map and draw path using current position google map is good option for integrate in iOS mobile .
small and range and get accurate result use indoor position system.
For more information about Indoor positioning system (IPS) click here
http://developer.estimote.com/
and Github iOS demo : get code
In my app I want to highlight certain roads, which can easily be achieved just by drawing polylines on top of the roads. (I am using the Google Maps SDK, by the way). However these polylines won't follow the road's geometry, they will just connect two coordinates with a straight line. (I have a coordinate for the start of the road which I want to highlight and the end of it). The coordinates won't change, the same roads will be highlighted through out the whole time in the app.
The question is: Is there a way I could draw these polylines not to be straight but to follow the road's geometry? If it's not possible in the SDK, is there a tool on the internet which will connect two coordinates following the roads between them? Because if there is, than I could get the coordinates of those poylines and parse them in my app.
Cheers!
as #Fabian has suggested, if you have a small set of polylines to show in your app, and your app works mostly offline, it would be better to get all the polylines during the development. And there are two ways:
1) through the direction API, you might able to skip all the implementation by using the WEB API, which is meant for webserver.
https://maps.googleapis.com/maps/api/directions/json?origin=Toronto&destination=Montreal&avoid=highways&mode=bicycling&key=API_KEY
2) or, with the Snap to Road API, which might gives you a better control over your route compare to the direction API. This API is meant to fix the pool GPS data you get from the sensor and snap those on the road.
I can't find any documentation about using mile markers, only latitude and longitude. Is this even possible? Basically the situation is I get a JSON with a road and a mile marker and I want to be able to represent that data on a map. I know I could tediously convert mile markers to coordinates, but that just seems asinine. Is there another way?
You will likely need outside data for this. Check state or even US DOT data sources for something you could use here. You could then represent it on a map with MapKit directly (annotations) or possibly look into making your own raster layer with Mapbox Studio.
I'm building an iPad app that will present a screen-by-screen walkthrough of directions sourced from Google's Directions API. I'd like to track the user's progress through physical space using CoreLocation and update the screens to follow the user, similar to most directions applications.
My initial idea is something along these lines:
For each step in the directions, grab the corresponding polyline
When CoreLocation updates, check whether the lat/long pair are within some delta of some point on the polyline (ie, iterate over all the points on the polyline).
If the location is within the polyline, stay on the same screen
If not on the polyline, check whether the user is within the same delta of some subset of the polyline for the next step (say 10 points) and, if so, advance to the next screen.
If not on the next polyline, alert the user that they've left the route.
This seems inefficient and not particularly accurate... Are there better ways to do this?
I have a question about the MKMapView component. I saw that on the native "Map" iOS app, we can draw the roads between different points and we can display the traffic for those roads. Well, that's exactly what I want to do for my app :)
So, I have two questions :
1) Firstly, how can I draw roads on a map. I read a lot of things about MKOverlay, about some samples which do that with JavaScript in UIWebView but what's the best way to do this ?
2) How can I know the traffic on a particularly road ? In order to draw the road in green, orange or red.
Thanks a lot !
Regards,
Sébastien ;)
Unfortunately by now CLGeocoder class from iOS 5 is just supporting to process address to geolocation transformation and reverse. It means to find address around the geocode you have or to find geocode of the address you provide. There are no possibilities access road graph to create routes (to select and draw roads precisely) and moreover to control traffic on the exact place. The only things you can do with standard tools is to draw overlays on the MKMapView with your own data.
To achieve the results you want I would offer to use the third party resources, Google Maps API for example, and use UIWebView to present a customized map. Google Maps JavaScript API v3 TrafficLayer