
Aligning map tiles
If you have either imported several scanned map tiles, or have pasted screenshots into your document, the map tiles need to be aligned with one another.
To align a map tile follow these steps:
Open the settings pane using the Settings button in the lower lefthand corner of the main document.
Select a map tile. If you can't select the map tile, uncheck pin in the settings pane.
Drag the tile around and place it over or at the edge of underlying tiles.
Use the transparency slider to adjust the transparency of the selected map tile.
Use the arrow keys to nudge the tile by 1 pixel or shift-arrow keys to shift it by 10 pixels.
If you have regular sized image tiles, use the grid-toolset to align map tiles at their edges with a fixed overlap. To determine and align map tiles, follow these steps:
Check the Use snap in option.
Select a map tile and position it at the edge of an existing map tile.
A blue guide line will show you the alignment edge, but do not correct the overlap manually yet.
Press the measure button next to the Overlap field.
Use the arrow keys and position the map tile on top of the underlying map tile with the correct overlap.
Again, press the measure button next to the Overlap field.
The Overlap field will now contain the pixel value your map tiles should overlap. Whenever you use snap in with this document, all map tiles that are positioned on the edge of another map tile will be repositioned to match the overlap.
The blue guide line will show you the alignment edge.