When using a "collection of images" tileset where some of the images span multiple tiles, is there any way to affect what tile is counted as the base tile?

Questions
1

Say i have a 3x2 mountain image that spans 3 horizontal x 2 vertical tiles plus little bits that overlap out a bit. Tiled considers it as 1x1 based in the bottom left of the image. Can I have the base anchor tile be the upper left, or tell it the image is really spanning 3x2 tiles and have the CSV layer output reflect that?

2

As already replied on IRC: No there is no way to do that. You will need to handle the offset when loading the map.

Regards,
Ablu