Ask Your Question

Knowrob: missing individuals

asked 2014-02-10 05:38:25 -0500

Noah gravatar image

updated 2014-02-14 01:09:53 -0500

Dear all,

I correctly installed knowrob and knowrob tutorials. (No warning and errors!) then when I try to execute the tutorial and specifically to query for the individuals of Drawers, I get:



?- owl_has(A, rdf:type, knowrob:'Drawer').

While I whould get

 ?- owl_has(A, rdf:type, knowrob:'Drawer').
 A = '' ;
 A = '' ;
 A = '' ;

I installed Knowrob by source as suggested.

Thank you in advance, I think that @moritz can help me.

And when I run:

nearlab@Bazinga:~/Development/ros_workspace$ rosrun rosprolog rosprolog ias_semantic_map
% library(swi_hooks) compiled into pce_swi_hooks 0.00 sec, 3,856 bytes
% /home/nearlab/.plrc compiled 0.01 sec, 1,472 bytes
%     library(error) compiled into error 0.00 sec, 19,104 bytes
%    library(lists) compiled into lists 0.00 sec, 45,824 bytes
%   library(shlib) compiled into shlib 0.00 sec, 67,120 bytes
%   library(option) compiled into swi_option 0.00 sec, 14,768 bytes
%  library(process) compiled into process 0.00 sec, 99,664 bytes
% /opt/ros/fuerte/stacks/knowrob/rosprolog/prolog/ compiled 0.00 sec, 107,448 bytes
Welcome to SWI-Prolog (Multi-threaded, 64 bits, Version 5.10.3)
Copyright (c) 1990-2011 University of Amsterdam, VU Amsterdam
SWI-Prolog comes with ABSOLUTELY NO WARRANTY. This is free software,
and you are welcome to redistribute it under certain conditions.
Please visit for details.

For help, use ?- help(Topic). or ?- apropos(Word).


It seems no errors or warning!

edit retag flag offensive close merge delete

1 Answer

Sort by ยป oldest newest most voted

answered 2014-02-10 19:40:52 -0500

moritz gravatar image

updated 2014-02-14 01:30:04 -0500

The output you have posted is much too short, none of the KnowRob files are loaded. Have you run rosmake knowrob and did this work without problems?

edit flag offensive delete link more


I edited the question! Thank you moritz!

Noah gravatar image Noah  ( 2014-02-14 01:10:26 -0500 )edit

Thank you, I missed a package! I solved it!

Noah gravatar image Noah  ( 2014-02-14 02:41:31 -0500 )edit

Your Answer

Please start posting anonymously - your entry will be published after you log in or create a new account.

Add Answer

Question Tools

1 follower


Asked: 2014-02-10 05:38:25 -0500

Seen: 158 times

Last updated: Feb 14 '14