Place the ModelNet dataset in this folder (/path/to/pcam/data/modelnet/), which should contain the following subfolders:
./modelnet40_ply_hdf5_2048/
./modelnet40_ply_hdf5_2048/ply_data_test0.h5
./modelnet40_ply_hdf5_2048/ply_data_test1.h5
./modelnet40_ply_hdf5_2048/ply_data_test_0_id2file.json
etc.