Method coerce

src/data_readers/data_reader_HDF5.cpp:757–801

}

void hdf5_data_reader::coerce(const conduit::Node& metadata,
                              hid_t file_handle,
                              const std::string& original_path,
                              const std::string& new_pathname,
                              conduit::Node& node)
{
  conduit::Node tmp;
  conduit::relay::io::hdf5_read(file_handle, original_path, tmp);

  // https://github.com/LLNL/conduit/blob/develop/src/libs/conduit/conduit_data_type.hpp
  if (!tmp.dtype().is_number()) {
    LBANN_ERROR(
      "source data in field ",
      original_path,
      " is not integer or real format; ",
      "please update the data set or experiment schema to exclude the field: ",
      tmp.dtype().to_string());
  }

  const std::string& coerce_to =
    conduit_to_string(metadata[HDF5_METADATA_KEY_COERCE]);

  // Example of data coercion taken from
  // https://github.com/LLNL/conduit/blob/develop/src/tests/conduit/t_conduit_node_to_array.cpp
  conduit::DataType::TypeID coerced_tid;
  if (coerce_to == "float") {
    coerced_tid = conduit::DataType::FLOAT32_ID;
  }
  else if (coerce_to == "double") {
    coerced_tid = conduit::DataType::FLOAT64_ID;
  }
  else if (coerce_to == "int") {
    coerced_tid = conduit::DataType::INT32_ID;
  }
  else if (coerce_to == "long" || coerce_to == "int64") {
    coerced_tid = conduit::DataType::INT64_ID;
  }
  else {
    LBANN_ERROR("Un-implemented type requested for coercion: ",
                coerce_to,
                "; you need to update the data reader to support this");
  }
  // https://github.com/LLNL/conduit/blob/develop/src/libs/conduit/conduit_node.hpp#L3263
  tmp.to_data_type(coerced_tid, node[new_pathname]);
}

void hdf5_data_reader::repack_image(conduit::Node& node,
                                    const std::string& path,