[…] areas of deeply weathered terrace formations crossed by broad and wide shallow valleys, most of which are streamless […]

Remove that line of code and the script should stop erroring there.

Galaxy cluster miscentering is especially a concern for stacked weak lensing shear studies of galaxy clusters, where offsets between the assumed and the true underlying matter distribution can lead to a significant bias in the mass estimates if not accounted for.

All my Westside bitches throw it up / Put a balloon inside your pussy, queef, and blow it up