OpenSource Map Vector Data
I was wondering if there is any interest in developing a database that can provide vector data for mapping and routing. I know a lot of projects have involved using a third party SDK like destinator, but with so many people looking for a good data source, why has nobody started working on a free solution? The tiger data is free and makes a good source for creating a database. It is not only of interest to me for a car PC but for my linux computers as well and my Zaurus Pocket PC.
I have started on some basic tests and it seems to me that it is very doable. I am using Gigabase 3.30 for database software along with the tiger data for my home state of Ohio. Gigabase stores its' database in a single file which is nice, and it is not a pain to set up like the big database softwares. Also, it will compile on both Linux and Windows (I have tried it with Mingw, but there is some make data for VC++).
All the roads in Ohio resulted in a 267 MB file containing roughly 1,000,000 line segments. I was careless with the size so I am confident that it shrunk to a large degree with minimal effort. I followed this with a spatial test query and was able to retrieve over 1000 records in fractions of a second (I did not officially time it). I am next interested in trying out sqlite. It is also crossplatform, keeps databases in a single file, is small, and easy to use. It does not support spatial queries but that can be worked around.
If anyone has interest in this type of project, reply and let me know.