diff --git a/include/basedata.h b/include/basedata.h
index 2a7f0c1..41082c7 100644
--- a/include/basedata.h
+++ b/include/basedata.h
@@ -34,6 +34,26 @@ class BaseData
  explicit operator bool() const { return N() != 0; }
 };
 
+class UngriddedData: public BaseData
+{
+ std::vector<real> lons, lats;
+
+ public:
+ template<class Lon, class Lat> UngriddedData(size_t n, Lon genlon, Lat genlat): BaseData(n), lons(n), lats(n)
+ {
+  for(size_t i = 0; i < n; i++)
+  {
+   lons[i] = genlon(i);
+   lats[i] = genlat(i);
+  }
+ };
+
+ UngriddedData() = default;
+
+ real Lon(size_t i) const { return lons[i]; }
+ real Lat(size_t i) const { return lats[i]; }
+};
+
 template<class Data> class DefaultAverager: public Data
 {
  static constexpr bool isuv = IsUVData<Data>;