Translate quad-packet index to linear index
[ix,iy] = qpkt2ix(deep,bx,by,kx,ky,n)
depth of splitting
specify box at depth d
specify coordinates within the box
linear indices in 2-d coefficient array where coefficients for quadlet (deep,bx,by,kx,ky) are stored
This routine is called by other, higher-level Wavelab functions and is not intended to be useful for most users.