Question

How can I read an Array that contains objects in this format:

Second pair: {
latitude = "26.499023";
longitude = "42.326061";
}

??

EDIT:

NO..this is the way I come up with that...   

NSArray *MaparrayLongitude = [dataMap objectForKey:@"longitude"];
NSArray *MaparrayLatitude = [dataMap objectForKey:@"latitude"];

if (MaparrayLongitude.count != MaparrayLatitude.count) {
    //Error: Unequal number of longitude/latitude values
} else {
    NSMutableArray *pairs = [NSMutableArray array];
    for (int i = 0; i < MaparrayLongitude.count; i++) {
        NSDictionary *pair = [NSDictionary dictionaryWithObjectsAndKeys:
                              [MaparrayLongitude objectAtIndex:i], @"longitude",
                              [MaparrayLatitude objectAtIndex:i], @"latitude", nil];
        [pairs addObject:pair];

Answer 1

The answer that I suspect you are looking for is called NSDictionary.
I came from PHP where we called it an array if it was either numerically indexed or keyed with strings; in Objective-C, there are 3 basic kinds of collections:

NSArray – ordered, natural integers as indexes

NSSet – unordered collection, single-membership

NSDictionary – keyed on one of several kinds of objects, usually strings.

Here is apple’s docs

Edit: for reference, here is what your code might end up looking like:

double myLat = [[secondPair objectForKey:@"latitude"] doubleValue];

EDIT (after your edit):
Perhaps it’s fast enumeration, in conjunction with dictionary access that you seek:

for (NSDictionary *coordinate in pairs) {
  // lat = [coordinate objectForKey@"latitude"];
}