The only way i know how to do that is to do something like this is by taking the textures you want for your matrix and putting them together like this:
Then use it like this:
Load image "land.bmp",1
Make Matrix 1, 100,100,2,2
Position Matrix 1, 0,0,0
Prepare Matrix texture 1, 1, 2,2
Set Matrix tile 1, 0,0, 1
Set Matrix tile 1, 1,0, 2
Set Matrix tile 1, 0,1, 3
Set Matrix tile 1, 1,1, 4
Update Matrix 1
Position camera 50,100,50
Point camera 50,0,50
Suspend for key
Delete image 1
Delete Matrix 1
End
I don't believe there is no other way to do this, but if some does i would like to hear it.