if(length(epc_dir) == 0) {stop(paste0("No EPC data folder in ", raw_data_folder))} if(length(epc_dir) > 1) {stop(paste0("No unique EPC data folders in ", raw_data ...

"description": "Energistics Packaging Convention (EPC) supports complex, multi-file datasets. This file collection allows to keep the EPC file with its external parts ...