Thanks a bunch for the information.
Praise God! I had two big features to add to something I am working on. I thought they would take about 8 days to complete. I started on Monday and already have them in a good demo state! AMEN! I knew I was going to look at adding filtering to my grid today and I was not looking forward to it. I prayed about it in the morning. Today I integrated in that open source thing I mentioned and also was able to implement my own version using the classes I've already been using. I had these two ideas working today! In the end, I'm choosing the latter so I removed the open source code and no longer require it. The open source project had a multitude of classes and hierarchy that seemed a bit too much, especially if we want to easily maintain it and understand it.
Anyway, I'm just really excited to proclaim God's help in getting this implemented sooner than expected. I certainly did not think I'd be leaving work today with the Filtering stuff in a workable state.
The next big enhancement is data conversion (distances, signal strengths, and Coordinate Systems --> THIS will be the difficult one).