I do not quite understand your question, but if you want to convert NSString to CLLocationCoordinate2D, you can use the following:
{
[self useLocationString:@"19.14,73.10"];
}
- (void) useLocationString:(NSString*)loc
{
CLLocationCoordinate2D location;
NSArray * locationArray = [loc componentsSeparatedByString: @","];
location.latitude = [[[NSNumber alloc] initWithDouble:[[locationArray objectAtIndex:0] doubleValue]] autorelease];
location.longitude = [[[NSNumber alloc] initWithDouble:[[locationArray objectAtIndex:1] doubleValue]] autorelease];
}
, , NSArray SeparatedByString.