Adding UTM latitude zone hemisphere conversion.

radixgeo/coordinateconversion.cc

 
 #include "radixgeo/coordinateconversion.hh"
+
 #include <algorithm>
 
 namespace radix
 {
 const std::array<char, 22> CoordinateConversion::UTMZones::letters = {
-    'A', 'C', 'D', 'E', 'F', 'G', 'H', 'J', 'K', 'L', 'M',
-    'N', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Z'};
+    {'A', 'C', 'D', 'E', 'F', 'G', 'H', 'J', 'K', 'L', 'M',
+     'N', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Z'}};
 
 const std::array<short, 22> CoordinateConversion::UTMZones::degrees = {
-    -90, -84, -72, -64, -56, -48, -40, -32, -24, -16, -8,
-    0,   8,   16,  24,  32,  40,  48,  56,  64,  72,  84};
+    {-90, -84, -72, -64, -56, -48, -40, -32, -24, -16, -8,
+     0,   8,   16,  24,  32,  40,  48,  56,  64,  72,  84}};
 
 const std::array<char, 11> CoordinateConversion::UTMZones::neg_letters = {
-    'A', 'C', 'D', 'E', 'F', 'G', 'H', 'J', 'K', 'L', 'M'};
+    {'A', 'C', 'D', 'E', 'F', 'G', 'H', 'J', 'K', 'L', 'M'}};
 
 const std::array<short, 11> CoordinateConversion::UTMZones::neg_degrees = {
-    -90, -84, -72, -64, -56, -48, -40, -32, -24, -16, -8};
+    {-90, -84, -72, -64, -56, -48, -40, -32, -24, -16, -8}};
 
 const std::array<char, 11> CoordinateConversion::UTMZones::pos_letters = {
-    'N', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Z'};
+    {'N', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Z'}};
 
 const std::array<short, 11> CoordinateConversion::UTMZones::pos_degrees = {
-    0, 8, 16, 24, 32, 40, 48, 56, 64, 72, 84};
-
+    {0, 8, 16, 24, 32, 40, 48, 56, 64, 72, 84}};
+const std::array<char, 11>
+    CoordinateConversion::UTM2LatLon::southern_hemisphere = {
+        {'A', 'C', 'D', 'E', 'F', 'G', 'H', 'J', 'L', 'L', 'M'}};
 short CoordinateConversion::UTMZones::latZoneDegree(char letter)
 {
   auto itr = std::find(letters.begin(), letters.end(), letter);
@@ -221,5 +224,20 @@ void CoordinateConversion::validate(double latitude, double longitude)
     throw std::out_of_range(oss.str());
   }
 }
+
+char CoordinateConversion::UTM2LatLon::hemisphere(char latitude_zone)
+{
+  auto it = std::find(std::begin(southern_hemisphere),
+                      std::end(southern_hemisphere), latitude_zone);
+  if (it == southern_hemisphere.end())
+  {
+    return 'N';
+  }
+  else
+  {
+    return 'S';
+  }
+}
+
 // UTMZones::latZone
 }  // namespace radix
\ No newline at end of file

radixgeo/coordinateconversion.hh

@@ -150,6 +150,14 @@ class RADIX_PUBLIC CoordinateConversion
     UTMCoordinate toUTM(double latitude, double longitude);
   };  // class LatLon2UTM
 
+  class RADIX_PUBLIC UTM2LatLon
+  {
+   private:
+   public:
+    static const std::array<char, 11> southern_hemisphere;
+    static char hemisphere(char latitude_zone);
+  };  // class UTM2LatLon
+
   /**
    * @brief validate Validates coordinate
    * @param latitude latitude coordinate

radixgeo/tests/tstCoordinateConversion.cc

@@ -223,4 +223,13 @@ TEST(Radixgeo, LatLon2UTM)
   EXPECT_EQ('S', utm.lattitude_zone);
   EXPECT_EQ(585322, utm.easting);
   EXPECT_EQ(4109888, utm.northing);
+  CoordinateConversion::UTMZones::latZoneDegree(utm.lattitude_zone);
+}
+
+TEST(Radixgeo, UTM2LatLon)
+{
+  EXPECT_EQ('S', CoordinateConversion::UTM2LatLon::hemisphere('A'));
+  EXPECT_EQ('S', CoordinateConversion::UTM2LatLon::hemisphere('M'));
+  EXPECT_EQ('N', CoordinateConversion::UTM2LatLon::hemisphere('N'));
+  EXPECT_EQ('N', CoordinateConversion::UTM2LatLon::hemisphere('Z'));
 }