A feature that's been requested many times over the years is to be able to see the parts you own based on the sets you own, much like you can with minifigs.
Just before I went away in December I wrote code to do just this and today I've uploaded it to the server.
Because of the potential for the feature to generate millions of rows of data and slow down parts searches slightly it's not enabled by default. You'll need to go to http://brickset.com/profile/preferences
and tick the box under 'your parts collection'.
Once you've done that you'll need to log off and on again, or close your browser and restart it, for the data to be collated.
Given our inventory data comes from LEGO.com and it's often inaccurate and incomplete, the data generated by this feature is not going to be totally accurate either. Also, the issue of seemingly identical parts having different LEGO item numbers will confuse things, too.
That said, it is what it is and you may find it useful. I'm not going to announce it on the home page to prevent hundreds of people all enabling it at once which might have a detrimental impact on the database.
Please give it a go and LMKWYT. In particular,
- Is the load time of the first page you view when you start a session at Brickset acceptable? (That's when the data is collated)
- Are load times of inventory/parts pages acceptable?
I might add 'I own xx loose' and 'I want xx' checkboxes in due course.