Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revisionPrevious revision
Next revision		Previous revision
doc:loading_files_and_ros_packages [2014/08/07 09:57] – [Exporting knowledge into OWL files] admindoc:loading_files_and_ros_packages [2014/11/25 08:30] (current) – [Loading Prolog modules] admin
Line 14: Line 14:
  owl_parse('path/to/file.owl').  owl_parse('path/to/file.owl').
 </code> </code>
 +
 +The OWL parser understands URLs of the form package:\/\/<pkg_name>/local/path/to/file.owl that are also used by the [[http://wiki.ros.org/resource_retriever|resource_retriever]] package in ROS and reference a file relative to a ROS package. You can use these URLs both for loading OWL files from Prolog and for imports in the head of an OWL file.
  
 =====  Loading Prolog modules  ===== =====  Loading Prolog modules  =====
Line 22: Line 24:
 </code> </code>
  
 +The //rosprolog// init scripts automatically add the 'prolog' folder inside ROS packages to the Prolog library search path when they are loaded using //register_ros_package//. Afterwards, libraries in this folder can be loaded using the simple //library(module_name)// instead of the file path.
 =====  Loading OWL/Prolog files in ROS packages  ===== =====  Loading OWL/Prolog files in ROS packages  =====
  
Line 41: Line 44:
 At some point, you may want to create OWL files. This can be done with the predicates in the //owl_export// module in the //knowrob_common// package: At some point, you may want to create OWL files. This can be done with the predicates in the //owl_export// module in the //knowrob_common// package:
  
-<code>+<code prolog>
  % Export the perception of an object to an OWL file  % Export the perception of an object to an OWL file
  export_object(knowrob:'Drawer1', 'path/to/object.owl').  export_object(knowrob:'Drawer1', 'path/to/object.owl').