Aggiorna README.md

README.md

@@ -41,10 +41,52 @@ Utilizza merge_tiles.sh
 
 crea una dir merged_tiles che può essere utilizzata con mb-util
 
-5️⃣  
+5️⃣  Trasforma in mbtiles
+
+mb-util --image_format=png merged_tiles italy.mbtiles
 
 
-6️⃣ 
+6️⃣ Inserisci i metatata
+
+```
+sqlite3 italy.mbtiles <<EOF
+DELETE FROM metadata;
+
+INSERT INTO metadata (name, value) VALUES ('name', 'Italy Terrain RGB');
+INSERT INTO metadata (name, value) VALUES ('description', 'Copernicus DSM 10m encoded as Mapbox Terrain-RGB');
+INSERT INTO metadata (name, value) VALUES ('format', 'png');
+INSERT INTO metadata (name, value) VALUES ('type', 'baselayer');
+INSERT INTO metadata (name, value) VALUES ('version', '1.0');
+INSERT INTO metadata (name, value) VALUES ('minzoom', '5');
+INSERT INTO metadata (name, value) VALUES ('maxzoom', '14');
+INSERT INTO metadata (name, value) VALUES ('bounds', '6.0,36.0,19.0,47.0');
+INSERT INTO metadata (name, value) VALUES ('center', '12.0,42.0,6');
+INSERT INTO metadata (name, value) VALUES ('attribution', 'EU Copernicus DSM 10m');
+EOF>>
+```
+puoi verificare con
+
+```
+sqlite3 italy.mbtiles "SELECT * FROM metadata;"
+```
+
+deve dare
+
+```
+{
+      "name": "Italy Terrain RGB",
+        "description": "Copernicus DSM 10m encoded as Mapbox Terrain-RGB",
+          "format": "png",
+            "type": "baselayer",
+              "version": "1.0",
+                "minzoom": "5",
+                  "maxzoom": "14",
+                    "bounds": "6.0,36.0,19.0,47.0",
+                      "center": "12.0,42.0,6",
+                        "attribution": "EU Copernicus DSM 10m"
+                        }
+}
+```
 
 🎯 Risultato
 Hai un terrain globale ad alta qualità, basato su Copernicus GLO‑30, pronto per TileServer‑GL.