# Tiled formula for converting isometric coords to tile row and column

While working on an isometric map, Tiled’s Object layer’s Insert Point tool saves an X and Y property (100/90 that refers to the isometric plane). I have also noticed that Tiled also shows in the bottom label the corresponding tile column and row (4, 3) as well as the canvas x and y properties (2409, 94). When I save the isometric map, I open the file and look into the object layer and I see that for every object only the isometric X and Y coords are saved. How can I configure Tiled to save the tile’s column and row as well as the canvas X and Y properties for every object in the Object layer?

If this is not possible, could you please provide a formula for converting the X, Y in the object layer to the corresponding map’s tile column/row and canvas X/Y?

Thanks

I don’t think you can export the tile-wise coordinates.

For non-staggered isometric maps, the X/Y coordinates seem to be the grid coordinates multiplied by the tile height, so to get the grid coordinates back is simple: `Tx = X / tileHeight`, `Ty = Y / tileHeight`. Note that Tx and Ty might not be integers if the object’s placement isn’t aligned to the tile grid. Tiled seems to take `tileHeight` as the length of the side of each tile and that’s why that’s the number used in both the X and Y calculations. There’s probably a good reason for it, but I haven’t messed with isometric maps enough to know why.

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Thank you. You have given me a north.

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I’m not sure there was a good reason for it. It’s a bit of a strange compromise between just using floating point tile coordinates for object position vs. pixel coordinates as is done on orthogonal maps.

The assumption was that generally isometric tiles are really a projected square. As such it would have made no sense to divide x by tile width and y by tile height, as done for orthogonal maps when converting pixel to tile coordinates.

But this is frequently a source of confusion, so in hindsight I think it may have been better to use tile coordinates for objects on isometric maps.

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