ifs
domain (-1,1) (-1,1)
transform scl(1/3) trl(-1/3, -1/3)
transform scl(1/3) trl(-1/3,  0)
transform scl(1/3) trl(-1/3,  1/3)
transform scl(1/3) trl(   0, -1/3)
transform scl(1/3) trl(   0,  1/3)
transform scl(1/3) trl( 1/3, -1/3)
transform scl(1/3) trl( 1/3,  0)
transform scl(1/3) trl( 1/3,  1/3)

dots 50000
order 4
image scl(10)