  Coherence is a fundamental ingredient for quantum physics and a key resource
for quantum information theory. Baumgratz, Cramer, and Plenio established a
rigorous framework (BCP framework) for quantifying coherence [T. Baumgratz, M.
Cramer, and M. B. Plenio, Phys. Rev. Lett. \textbf{113}, 140401 (2014)]. In
this paper, under the BCP framework we provide two classes of coherence
measures based on the sandwiched R\'{e}nyi relative entropy. We also prove that
we can not get new coherence measures $f(C(\cdot))$ by a function $f$ acting on
a given coherence measure $C$, except the case of qubit states.
