  We study subsets of $\R^{d}$ which are thin for doubling measures or
isotropic doubling measures. We show that any subset of $\R^{d}$ with Hausdorff
dimension less than or equal to $d-1$ is thin for isotropic doubling measures.
We also prove that a self-affine set that satisfies $OSCH$ (open set condition
with holes) is thin for isotropic doubling measures. For doubling measures, we
prove that Bara\'nski carpets are thin for doubling measures.
