I'm trying to develop a delivery system for a restaurant, but I'm not sure how to approach this problem. The restaurant has five locations; four of them are in one state and the other is in a different state.
They only do deliveries for each location depending on how far it is; they also have setup certain limitations for each location.
My idea will be:
Fetch user's location on iOS (Accomplished)
Check if user location is inside of any Restaurant delivery radius. If so, set that location as the store, if not, just show a message that we don't delivery in their area.
Where I'm stuck
How can I define in Apple Maps the limits of Location 1, 2, 3, etc. (meaning what area will they be doing delivery to)?
Try setting the deliverable radius around the location of the restaurant. You can even draw an MKCircle to be fancy.
CLLocation * _storeLocation = [[CLLocation alloc] initWithLatitude:30.270135 longitude:-97.731270];
double deliverableRadius = 3 * 1609.34; // 3 miles (or the area they will deliver to)
MKCircle * circle = [MKCircle circleWithCenterCoordinate:storeLocation.coordinate radius:deliverableRadius];
[_mapView addOverlay:circle];
Once you have established the deliverable area, you can check to see if the see if the users location is within this area.
So I think a simple approach might be to simply check if the user is within a certain distance of a restaurant (ie "If I am less than 25 miles from a restaurant, then they will deliver to me").
First convert the address of the restaurant locations into gps coordinates. See Converting Place Names Into Coordinates for more info.
Next, calculate the distance between the user's location and the location of each restaurant and check if that distance less than the maximum delivery distance.
A formula for calcualating the distance between two points can be found here.
Related
So I am working on a project that includes many uses placing annotations all around a map. The annotation, (which is a custom image with a much larger circular range) appears on the screen and, ideally, I would like for a user to be:
Notified if they are within the range of a annotation
and
Not be allowed to place another annotation within the range of another one if the circular pins overlap by, say, more than 25%
I think this is a pretty unique question and should be fun for somebody to help out with, so have fun! Thanks everybody!
You can check the distance from each annotation using
- (CLLocationDistance)distanceFromLocation:(const CLLocation *)location
This method measures the distance between the two locations by tracing
a line between them that follows the curvature of the Earth. The
resulting arc is a smooth curve and does not take into account
specific altitude changes between the two locations.
For more details refer Link
Try this:
let location = CLLocation(latitude: 1, longitude: 1)//Or user's location
let distance = location.distance(from: anotherLocation)
Edit:
As mentioned in the comments, you wanted to create an equidistant point. I suggest manually doing that:
Subtract the annotation's location from he user's location. Then add your distance back to the original one. For example:
The user's location = (1, 1)
The annotation's location = (3, 2)
Vertical difference would be 2
Horizontal difference would be 1
Then:
(3 + 2, 2 + 1)
Your result: (5, 3)
Now you would have two points (the one you just created and the user's location) at each end with a center point (original annotation)
I am currently working on map application base on iOS using Swift language. I would like an suggestion because after I plot all the pins on map view
(which I receive data from my server using JSON frameworks call Alamofire)
I would like the subtitle of all annotations on map to show distance from user current location.
Now it can add annotations onto map view but can only show title and subtitle base on information receive from my server.
Thank You.
If you have two CLLocation instances, you can calculate distance with the following code:
var one, two: CLLocation
// assign one and two
let distance = two.distanceFromLocation(one)
CLLocationDistance is just double and distance calculated in meters
in my maps app i have to find the places (bank,ATM,cafe,bar..) inside bound of selected locations.Actually i have to get the places which are centre to the given locations.
for example i have 4 places a,b,c,d i have to get all banks inside bounds of these 4 places and have show them on map.
i can get nearest places for each location individually by using GooglePlaces API.but i need show places which are centre(approximately) to these 4 places.
please give me any suggestions how to do this or any example code or any other tutorials or links....
Thanks
Raki.
Your solution would be to take the average lat/lon of your points and then hit your Google API to get locations in that area. This average will be in the middle of however many coordinates you have. Example:
double totalLat = 0;
double totalLon = 0;
for(CLLocationCoordinate2D coordinate in coordinateArray)
{
totalLat += coordinate.latitude;
totalLon += coordinate.longitude;
}
// Use this average coordinate (which is the center of your points) to hit your Google API
CLLocationCoordinate2D averageCoordinate = CLLocationCoordinate2DMake(totalLat / coordinateArray.count, totalLon / coordinateArray.count);
Note: I haven't actually tested this, so don't just copy/paste, but it's the general idea.
You can always use the radius parameter defined in the Places API to get this information.
Please follow this Stack Overflow answer for more details.
Given a path say 1000 meters long from start to goal consisting of a finite number of CLLocation points (guesstimate around 100). Assuming the user is somewhere on the path and a CLLocation coming from iOS location services, what would be the best way to calculate the nearest point forwards along the route?
Finding the nearest point is easy enough using -[CLLocation distanceFromLocation:], but as the user passes a point and moves towards the next, the previous point will still be the nearest until he passes the midway between the previous and next point.
You could keep a array consisting of the sorted (start to the end of the path) CLLocation points (hypothetical 100) and evaluate only those poins to find the nearest one that will be visited. To find a visited point you keep the starting position and mesure the distance from the start to the current location of the user(d1). If d1 > distance from start to the next point in the sorted array and the current location is nearby (10 - 100 m) the next point in sorted array then remove the point else user did not visit / passed by that location so you keep it in the sorted array.
i'm trying to geocode values and map them to a satellite image of a city (new york city to be precise). i've successfully done this before using a geospatial image of the world, and then mapped/scaled longitude and latitude values from the max lat/lng range (-90,90 & -180,180) to the max width and hight of the image (0,width & 0,height) which worked perfectly. i'm a bit confused how to do this to just a map of a city.
currently, i have a hi-res satellite image of new york city, and have positioned it so that it perfectly aligns with the map of new york city on Google Maps (i'm using their API to geocode my locations). i've attempted to get the top/bottom latitude values and left/right longitude values of the satellite image i'm using, and tried to scale any longitude/latitude values that needed to be mapped onto the image within this range. however, this didn't seem to work. is there another method i could use so that it would be possible to dynamically map lat/lng coordinates onto a satellite image of new york city?
this is essentially the image that i would like to map onto:
thanks.
If you know the image size and its geographic extent (lat/lon values), you can use something like:
x = imageWidth * ( pointLon - ImageExtentLeft ) / (ImageExtentRight - ImageExtentLeft);
y = imageHeight * ( 1 - ( pointLat - ImageExtentBottom) / (ImageExtentTop - mImageExtentBottom));
By the way, if you are using the Google Maps API to geocode your locations, why don't you use its functions to add markers directly to your map? (Maybe I didn't completely understand your case)
var latlng = new GLatLng(pointLat, pointLon);
map.addOverlay(new GMarker(latlng));
Hope it helps
You are engaging in a process called image registration or map rectification. There is a whole set of remote sensing dedicated to the equations for doing this.
Perhaps you can just start with this web site - it should basically do what you need
http://labs.metacarta.com/rectifier/ (dead link)
if not then maybe look at tools like QGIS or GRASS. If you have money and time you can also use ESRI ArcGIS desktop or ERDAS Imagine or IDRISI.