Floor tiling, door threshold and where to stop.

[crispy_wafer]

Upstairs Bathroom floor, leads onto landing.  Bathroom floor will be tiles, landing will be something else and there will likely be a transition strip.  The door casing is such that the door will be inward opening.  

 

I'm trying to set out the tiles for the floor, but am coming a little unstuck on where the transition from tiles to the other flooring ought to be...  What do tilers usually do? Tile to outer edge of door (Landing side)?  Inner edge?  To the Centre line?

 

 

[Nestor]

Not a professional tiler, I made all the transitions between different materials  in the centre of the depth of the door.