lab4.md

@@ -18,7 +18,7 @@ For this lab, we will only use the SPARQL part.
 The following command will start the database (you should add it to your screen):
 
 ```bash
-ros2 run ros2_kdb kdb_server --ros-args -p db_port:=101XX 
+ros2 run ros_kdb kdb_server --ros-args -p db_port:=101XX 
 ```
 
 Replace XX with your group number. The database server is very verbose, you can generally ignore what is printed in the terminal.
@@ -34,7 +34,7 @@ rm -rf $HOME/.lrs_kdb/stores/
 The following service call will insert two objects in the graph named **salientpoints**, one human (with identifier 1) at coordinates `(8,10)` and one table (with identifier 2) at coordinates `(10,12)`:
 
 ```bash
-ros2 service call /kdb_server/insert_triples  ros2_kdb_interfaces/srv/InsertTriples "
+ros2 service call /kdb_server/insert_triples  ros_kdb_interfaces/srv/InsertTriples "
 graphname: 'salientpoints'
 format: 'ttl'
 content: '@prefix gis: <http://www.ida.liu.se/~TDDE05/gis>
@@ -52,7 +52,7 @@ This will insert two objects, the first has uuid `id1`, coordinate `(8,10)` and
 The following query can be used to retrieve all the elements in the database:
 
 ```bash
-ros2 service call /kdb_server/sparql_query ros2_kdb_interfaces/srv/QueryDatabase "queries:
+ros2 service call /kdb_server/sparql_query ros_kdb_interfaces/srv/QueryDatabase "queries:
   - graphnames: [salientpoints]
     format: 'json'
     query: 'SELECT ?subject ?predicate ?object WHERE { ?subject ?predicate ?object }'"
@@ -64,7 +64,7 @@ ros2 service call /kdb_server/sparql_query ros2_kdb_interfaces/srv/QueryDatabase
 The following query can be used to retrieve all the object with their class that are near the point of coordinate `(10, 12)`:
 
 ```bash
-ros2 service call /kdb_server/sparql_query ros2_kdb_interfaces/srv/QueryDatabase "queries:
+ros2 service call /kdb_server/sparql_query ros_kdb_interfaces/srv/QueryDatabase "queries:
  - graphnames: ['salientpoints']
    format: 'json'
    query: '