GeoParse

A simple delegate based objective-C GeoJSON parser with some useful tools. GeoParse acts as a layer over NSJSONSerialization to get the root JSON object, which is then parsed into it's corresponding GeoJSON type, in strict accordance with the GeoJSON format specification

Setup

• Link the CoreLocation and MapKit framework to your project. (Used for data types.)
• Import GSNParser.h and set an object to adhere to GSNParserDelegate protocol.
• Create a GSNParser object and set it's delegate.
• Implement -didParseGeoJSONObject:

-(void)didParseGeoJSONObject:(id)object
{
    if ([object isKindOfClass:[GSNFeatureCollection class]]) {
        GSNFeatureCollection *collection = (GSNFeatureCollection *)object;
        for (GSNFeature *feature in collection.featureObjects) {
            NSLog(@"%@",feature.name);
    }
}

Notes and Extras##

GeoJSON formats for

• Bounding Boxes: [ low (longitude), low (latitude), high (longitude), high (latitude) ]
• Coordinates: ( longitude, latitude )

GeoParse contains a very useful category on NSArray(NSArray+Coordinate2D).

• It allows for easy conversions to CLLocationCoordinate2D, from an NSArray of coordinates parsed from NSJSONSerialization.
• If the NSArray is a bbox as specified above, you can find it's center, as well as check if it contains a point.

GeoParse allows conversion of geometry objects(only Points, LineStrings, Polygons and MultiPolygons for now) to their corresponding MKOverlay types, by calling the -shapeForMapKit method on them. GSNFeature now conforms to the MKAnnotation protocol and can be simply dropped onto a MKMapView.

##License## See included LICENSE file.