(Internal) Helper function to create an InfinitySparseMatrix from a set of scores, a treatment indicator, and a caliper width.
scoreCaliper(x, z, caliper)
x
: The scores, a vector indicating the 1-D location of each unit.z
: The treatment assignment vector (same length as x
)caliper
: The width of the caliper with respect to the scores x
.An InfinitySparseMatrix
object, suitable to be passed to match_on
as an within
argument.
Useful links