Hello,i want to set terrain for my 45° map.But I tried several times and it was all wrong.
Hey @AlanL, welcome to the Tiled forum!
To make this much easier, you should set the Orientation of your tileset to Isometric and adjust the Grid Width and Grid Height as appropriate for your tiles. Then the overlay will render in isometric projection. You can change these properties by going to Tileset > Tileset Properties.
Additionally, your tiles form a corner-based terrain set rather than an edge-based one.