I'm working on a new worldspace, and would like to navmesh each cell as I am placing objects and texturing. I think that would be a more efficient way of doing it rather than placing everything then going back later. Hopefully to preserve my sanity. I have done navmeshing it interior spaces in the past without any major problems, but never a large exterior such as this island I am building.

My question is how to join the navmesh from one cell to another. I have Googled it and checked the wiki page but can't find the info.

Any help would be appreciated.

Never mind, found it.

I've found it to be more efficient navmeshing once the world is done (you get a rhythm up) but like you say it will test your sanity doing it all at once.

When it comes to joining cells, you have a cell that your active in (placing triangles) the editor won't let you place a new vertex into another cell, it will place it on the boundary of that cell (toggle B to show the boundaries). So fill up your cell with a complete navmesh and you should have nice straight edge boundaries of placed vertices (as close to ground level as possible), then when you repeat this for the next cell make sure the vertices in that match up as close as you can to the others in the previous cell. When you finalize a cell you should end up with green square bars between each of those boundary vertices to show that a door connection has been made.

Thanks for the quick response. I've already redone the whole island twice because for some stupid mistakes, I just look at it as learning and try not to get to discouraged. Thank the Gods for backups...LOL!!