Traits for non-geographical arrays

include/traits.h

@@ -167,3 +167,33 @@ concept ReadIs1DGeoArray = requires {
   std::declval<ReadType<T>>().Lat(0)
  } -> std::convertible_to<real>;
 };
+
+template<class T>
+concept ReadIs2DXYRectArray = requires {
+ {
+  std::declval<ReadType<T>>().Ix2X(0)
+ } -> std::convertible_to<real>;
+ {
+  std::declval<ReadType<T>>().Iy2Y(0)
+ } -> std::convertible_to<real>;
+};
+
+template<class T>
+concept ReadIs2DXYArray = requires {
+ {
+  std::declval<ReadType<T>>().X(0, 0)
+ } -> std::convertible_to<real>;
+ {
+  std::declval<ReadType<T>>().Y(0, 0)
+ } -> std::convertible_to<real>;
+};
+
+template<class T>
+concept ReadIs1DArray = requires {
+ {
+  std::declval<ReadType<T>>().X(0)
+ } -> std::convertible_to<real>;
+ {
+  std::declval<ReadType<T>>().Y(0)
+ } -> std::convertible_to<real>;
+};