Can you hide pictures?

Question

I would like to hide some pictures in my aperture library. How can I do this?

Answer 1

The best you could do is to place the images you want to hide in a separate library.
If you want to hide this secret, separate library completely, give it a name that starts with a dot, like ".secret.aplibrary", Aperture will warn you that the name should not start with a dot. Just ignore the warning and proceed. However, since you will not be able to see this library in the Finder, you can only open it from the Terminal.
Lets assume, you have a secret Library  located in your Pictures Folder.
  Open Applications/Utilities/Terminal
   type:
  cd Pictures
open -a Aperture .secret.aplibrary
Then you can admire your secret pictures. To switch back to your regular library use the menu File > switch to library
and when you are back to your standard library click
File > clear menu
to all traces.
To see your hidden files listed in the terminal window, just type "ls -a".
To rename the secret library, use the "mv"-command:
mv .secret.aplibrary  nolongersecret.aplibrary
Make sure you remember the exact name and path to your secret library - spotlight wan't show it,
perhaps you could create an innocent looking alias to your secret file, while the file is still visible and before you hide it.