0.16.2: Added wm_state field to database's Statistics table. New parameter "Rtabmap/SaveWMState" (default false). DbViewer: added option in GraphView to show only poses of the root id that were in WM at that time

corelib/src/resources/DatabaseSchema.sql.in

@@ -100,7 +100,8 @@ CREATE TABLE Info (
 CREATE TABLE Statistics (
 	id INTEGER NOT NULL,
 	stamp FLOAT,
-	data BLOB,	
+	data BLOB,              -- compressed string
+	wm_state BLOB,	        -- compressed data
 	FOREIGN KEY (id) REFERENCES Node(id)
 );