lab4.md

@@ -207,7 +207,9 @@ timer = self.create_timer(0.5, timer_callback)
 rclpy.spin(node)
 ```
 
-Check bellow to see how to see the results in RViz.
+In RViz you can select to display a marker array, and you should see two cubes. You should then modify the program to query the database and show the humans and tables. Once you have completed the lab you should see something similar to this (the exact numbers of cubes and their positions may be different for you):
+
+![rviz_marker_array](uploads/252cff8dffe1c7abad224ce6a02703b4/rviz_marker_array.png)
 
 ## C++
 
@@ -274,11 +276,7 @@ int main(int argc, char** argv)
 }
 ```
 
-Check bellow to see how to see the results in RViz.
-
-## RViz
-
-In RViz you can select to display a marker array and you should get something similar to:
+In RViz you can select to display a marker array, and you should see two cubes. You should then modify the program to query the database and show the humans and tables. Once you have completed the lab you should see something similar to this (the exact numbers of cubes and their positions may be different for you):
 
 ![rviz_marker_array](uploads/252cff8dffe1c7abad224ce6a02703b4/rviz_marker_array.png)