diff --git a/src/main.cpp b/src/main.cpp
index bf2fc46..503d81f 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -13,7 +13,7 @@
 #include <gdal/gdal_frmts.h>
 #include <omp.h>
 
-CellMap produce_cellmap(HeightMap* heightmap, float z)
+std::vector<Point> produce_cellmap(HeightMap* heightmap, float z)
 {
     int length = (heightmap->width-1)*(heightmap->height-1);
     uint8_t *cells = (uint8_t *) CPLMalloc(sizeof(uint8_t)*length);
@@ -27,24 +27,24 @@ CellMap produce_cellmap(HeightMap* heightmap, float z)
         (heightmap->get_pixel(x,y+1)>z)*8;
         if (result != 0 and result != 15 ) {
             points.push_back(Point(x, y, result));
-            
+
         };
     }
     
-    return CellMap(heightmap->width-1, heightmap->height-1, cells, heightmap->reference_system, heightmap->geotransform);
+    return points;
 
 
 }
 
-std::vector<CellMap> vector_cellmap(HeightMap* heightmap, int interval)
+std::vector<std::vector<Point>> vector_cellmap(HeightMap* heightmap, int interval)
 {
     int num_contours = (heightmap->max - heightmap->min)/interval;
-    std::vector<CellMap> vector_contours;
+    std::vector<std::vector<Point>> vector_contours;
     omp_set_num_threads(12);
 
     #pragma omp parallel
     {
-        std::vector<CellMap> vec_private;
+        std::vector<std::vector<Point>> vec_private;
         #pragma omp for
         for (int i = 1; i <= num_contours; i++) 
         {