excerpt.m

- (void)addMarkerAt:(CLLocationCoordinate2D)position forHotspot:(Hotspot *)hotspot
{
    UIImage *pinImage = unvisitedPin;
    if ([hotspot.visited boolValue]) {
        pinImage = visitedPin;
    }
    
    CLLocationCoordinate2D annotationCoord;
    
    annotationCoord.latitude = [hotspot.latitude doubleValue];
    annotationCoord.longitude = [hotspot.longitude doubleValue];
    
    RMAnnotation *annotationPoint = [[RMAnnotation alloc] initWithMapView:mapView
                                                               coordinate:annotationCoord
                                                                 andTitle:hotspot.name];
    [annotationPoint setAnnotationIcon:pinImage];
    [mapView addAnnotation:annotationPoint]; 
}