How to delete photos from my iPhone, but they stay in my iPhoto on my mac?

I would like to make room on my phone. They all upload into iPhoto on my mac automatically, but if I delete the photo on my phone, it deletes it on the mac, too. I would like to be able to keep it on my computer and keep it in that program, instead of having to copy the photos out to a random folder.

If you have deleted photos from your iPhone, but they stay in your iPhoto on your mac. You may transfer photos and files from mac to iphone.
http://bitly.com/idevicemactransfer