[Swarm-Support] Grid2d and ZoomRaster

[Li An]

Dear Swarm users,

I have a Grid2d object that is placed in a ZoomRaster object for display. 
If I set the width and height of the ZoomRaster equal to the X and Y sizes 
of the Grid2d object, then the map is too large to be displayed on the 
screen. If I use a fixed width and height for the ZoomRaster, then only art 
of the Grid2d can be displayed.

Any suggestions about how to adapt the Grid2d object proportionate to the 
size of the ZoomRaster? Put another way, the Grid2d object (regardless of 
its size) can be always displayed in a size-fixed ZoomRaster object?

Thanks,

Li