Clox answered my question of how to display huge graphics (e.g. greater than 8191 pixels).
I have the code to copy parts of a huge loaded BitmapData to a target BitmapData that is just the size that I can display.
I think I have set the scroll bars of an enclosing Canvas to show the size of the larger image and allow the user to scroll.
Now I need to put the selected pixels on the screen. When I try to add a Bitmap component as a child of the Canvas, it get an error because Bitmap is not a UIComponent.
What's the best way to put the target BitmapData into an Image component?
How else can I get the subset of pixels on the screen?