We use a semitransparent grid layer (.mig file) to show 'hotspot' intensity in MapBasic (MapInfo). Because the grid is just a rectangle, this looks ugly. See for instance: .
Now MapInfo allows grid cells to be invisible (NULL), which would result in round-like hotspot regions.
But we would prefer to extend the grid. Of course we could just add extra rows and columns, but that would require a lot of extra memory. And it would still show a boundary at some zoom level.
Is it possible to infinitely extend a grid layer with a constant value?