Tilemaps possible within the UI system?

I was hoping to place a tilemap into a UI canvas for the purpose of drawing a tiled world map. It seems that this is not possible using Unity's Tilemap system (unless I'm missing something?). Is there a best practice method for accomplishing something like this within the UI system? Simply placing a bunch of UI Images next to each other in a grid wouldn't really be a feasible solution due to the number of images that would be required.

 

The UGUI way of achieving this is placing a lot of sprites next to each other (either with grid layout group, by hand, with help of a distibution tool or by a custom script).
I wonder why you want to do this in the ui...
If you just want to display some non-UI stuff inside a UI control you can render it into a render texture and display it wih the

Raw Image

component.