code: public static URL pathExampleURL( String path ) {
  		try {
  			File fpath = new File(path);
  			if (fpath.isAbsolute())
  				return fpath.toURI().toURL();
  			// Assume we are running inside of the project come
  			String pathToBase = getPathToBase();
  			if( pathToBase != null ) {
  				File pathExample = new File(pathToBase, "data/example/");
  				if (pathExample.exists()) {
  					return new File(pathExample.getPath(), path).getAbsoluteFile().toURL();
  				}
  			}
  
  //			System.out.println("-----------------------");
  			// maybe we are running inside an app and all data is stored inside as a resource
  //			System.out.println("Attempting to load resource "+path);
  			URL url = UtilIO.class.getClassLoader().getResource(path);
  
  			if (url == null) {
  				System.err.println();
  				System.err.println("Can't find data/example directory!  There are three likely causes for this problem.");
  				System.err.println();
  				System.err.println("1) You checked out the source code from git and did not pull the data submodule too.");
  				System.err.println("2) You are trying to run an example from outside the BoofCV directory tree.");
  				System.err.println("3) You are trying to pass in your own image.");
  				System.err.println();
  				System.err.println("Solutions:");
  				System.err.println("1) Follow instructions in the boofcv/readme.md file to grab the data directory.");
  				System.err.println("2) Launch the example from inside BoofCV's directory tree!");
  				System.err.println("3) Don't use this function and just pass in the path directly");
  				System.exit(1);
  			}
  			return url;
  		} catch (MalformedURLException e) {
  			throw new RuntimeException(e);
  		}
  	}
docs: Returns an absolute path to the file that is relative to the example directory
  @param path File path relative to root directory
  @return Absolute path to file