Data sections

Each Neospectra observation record stores one spectral scan — a 257-element reflectance array covering ~1350–2550 nm — linked to a sample and an observation log. Multiple sub-samples and replicates are common; each is a separate process file.

Prerequisites

Notebook cell

In load_ai4sh_spectral_data.ipynb, the Manage Neospectra observation cell runs:

job_file = 'import_data/neospectra/job_neospectra_observation.json'

structured_process_D, scheme_params_D = Initiate_process(notebook_path, scheme_file, job_file)

if structured_process_D is not None:
    Run_process(structured_process_D, scheme_params_D)

Job file

Path: ./ai4sh/import_data/neospectra/job_neospectra_observation.json

{
  "process": {
    "job_folder": "import_data/neospectra/observation",
    "process_sub_folder": "process",
    "pilot_file": "xspatula_add_observation_pilot.txt"
  }
}

Process file example

Path: ./ai4sh/import_data/neospectra/observation/process/ai4sh_dk_foulum_2024@neospectra_ds2_219-c5@0-20_a_0_none_20241106_observation.json

{
  "process": [
    {
      "process": "manage_observation",
      "parameters": {
        "observation_log_id__observation_log_name": "ai4sh_dk_foulum_2024@neospectra_ds2",
        "sample_id__sample_name": "219-c5@0-20",
        "provision_id__provision_name": "neospectra",
        "subsample": "a",
        "replicate": 0,
        "observation_date": 20241106,
        "@spectra_array": [0.2274, 0.2284, 0.2295, 0.2305]
      }
    }
  ]
}

1672 process files — one per individual scan. The @spectra_array contains 257 reflectance values; the example shows the first 4.

Parameters

Parameter Description
observation_log_id__observation_log_name FK lookup: parent observation log
sample_id__sample_name FK lookup: sample record
provision_id__provision_name FK lookup: neospectra
subsample Sub-sample identifier (e.g. a)
replicate Scan replicate number (integer, starting at 0)
observation_date Date of scanning as integer (YYYYMMDD)
@spectra_array Reflectance array — 257 values, ~1350–2550 nm, ascending wavelength

Unlike the FOSS DS2500, the Neospectra observation does not include a provision_serial_nr_id field — serial number tracking is optional and not used in the current AI4SH dataset for this instrument.

Next step

Proceed to Manage FTIR spectrometer to continue with the FTIR instrument.

Updated: