I am an engineer and I have been looking for a digitizing program for a while. The program is really good. You did a great job. As you go along with auto digitize line, some weird random points are inserted, but the clean-up feature was easy and made that a non issue. I like that the program was really intuitive. I didn't have to read a manual or search for instructions, the menus just made sense. In 15 minutes I was able to digitize old plots of data from the 1970's and overlay that on more recent data that I have collected. The only thing that it needs, and maybe it's there and I didn't see it, was a pan feature, so you wouldn't have to use the scroll bars on large plots when you are zoomed in. Holding down the left or right mouse button while you drag your graphic would make things a lot easier.
