fix(#IGNGPF-2640): return -99999 si hors plage pyramide

alti_api/versions/v1_0/calculation/elevation.py

@@ -14,6 +14,7 @@ from alti_api.versions.v1_0.models.parameters import (
     FORMAT_ENUM,
     INDENT_ENUM,
     MEASURES_ENUM,
+    NO_DATA,
     ZONLY_ENUM,
     resources,
     rok4_descriptors,
@@ -359,9 +360,8 @@ async def get_altitudes_from_points(
                         tile_desc[0], int(tile_desc[1]), int(tile_desc[2])
                     )
                     if np.any(tile) is False or tile is None:
-                        z = -99999
+                        z = NO_DATA
                 except StorageError as e:
-                    # TODO improve logged message
                     logger.error(e)
                     raise ErrorException(
                         status_code=ROK4_TILE_NOT_FOUND["status_code"],