csbschema

csbschema defines a JSON Schema and validator (implemented in Pyhon) for IHO B-12 Crowdsourced Bathymetry metadata and data.

Installation

To install from PyPi, first create a virtual environment for your project, then:

pip install csbschema

Clone or download this repository, then run:

$ pip install .

Usage

Convention GeoJSON CSB 3.1

JSON files conforming to IHO B-12 Edition 3.0.0 can be validated using the 3.1.0-2024-04 schema (e.g., convention 'GeoJSON CSB 3.1'):

$ csbschema validate -f docs/IHO/b12_v3_1_0_example.json
CSB data file 'docs/IHO/b12_v3_1_0_example.json' successfully validated against schema '3.1.0-2024-04'.

Validating an invalid document will show where in the document errors were be found:

$ csbschema validate -f docs/IHO/b12_v3_1_0_example-invalid.json 
Validation of docs/IHO/b12_v3_1_0_example-invalid.json against schema 3.1.0-2024-04 failed due to the following errors: 
Path: /properties/trustedNode/convention, error: 'GeoJSON CSB 3.0' is not one of ['GeoJSON CSB 3.1']
Path: /properties/processing/5, error: {'type': 'VerticalOffsetAnalysis', 'timestamp': '2021-11-22T16:10:09.346821Z', 'name': 'CIDCO Vertical Offset Analysis', 'version': '1.0.0', 'reference': 'DOI:10.47366/sabia.v5n1a3', 'comment': 'FREE TEXT HERE', 'analysis': [{'name': 'Chi2', 'pass': True, 'parameters': {'a': 123.456, 'b': 789.012, 'target': 'Normal', 'df': 15, 'alpha': 0.05, 'pmf': {'centers': [-1.0, -0.5, 0, 0.5, 1.0], 'counts': [0, 24, 50, 120, 23, 0]}}, 'reference': 'DOI:10.47366/sabia.v5n1a3', 'comment': 'FREE TEXT HERE'}]} is not valid under any of the given schemas
Path: /features/1/properties, error: 'depth' is a required property
Path: /features/3/properties, error: 'time' is a required property
Path: /features/4/properties/time, error: '2016-03-03 18:41:49Z' does not match '^([0-9]+)-(0[1-9]|1[012])-(0[1-9]|[12][0-9]|3[01])[Tt]([01][0-9]|2[0-3]):([0-5][0-9]):([0-5][0-9]|60)([.][0-9]+)?[Zz]$'
Path: /properties/platform/IDNumber, error: IDNumber IMO3699580 is not valid for IDType MMSI.
Path: /properties/platform/dataProcessed, error: dataProcessed flag is 'false', but 'processing' properties were found.
Path: /properties/platform/uniqueID, error: uniqueID: SEAID-45f5c322-10f2-4946-802e-d5992ad36727 does not match /properties/trustedNode/uniqueVesselID: SEAID-e8c469f8-df38-11e5-b86d-9a79f06e9478
Path: /features/1/properties, error: Observation uncertainty found, but Uncertainty metadata was not found.

Conventions GeoJSON CSB 3.0 and XYZ CSB 3.0

A schema for the provisional JSON encoding of B12 3.0.0 data and metadata (e.g., convention 'GeoJSON CSB 3.0') is available under the schema name '3.0.0-2023-03':

$ csbschema validate -f docs/NOAA/example_csb_geojson_file.geojson --version 3.0.0-2023-03

Similarly, a metadata-only schema (e.g., convention 'XYZ CSB 3.0') is available under the schema name 'XYZ-3.0.0-2023-03':

$ csbschema validate -f docs/NOAA/noaa_b12_v3_0_0_xyz_required.json --version XYZ-3.0.0-2023-03
CSB data file 'docs/NOAA/noaa_b12_v3_0_0_xyz_required.json' successfully validated against schema 'XYZ-3.0.0-2023-03'.

The metadata-only 'XYZ schema' is meant to be used for JSON metadata supplied alongside CSB data in CSV or another format.

Convention GeoJSON CSB 3.2

A schema for a beta JSON encoding of B12 3.0.0 (e.g., convention 'GeoJSON CSB 3.2') is available under the schema name '3.2.0-BETA':

$ csbschema validate -f docs/IHO/b12_v3_2_0-BETA_example.json --version 3.2.0-BETA
CSB data file 'docs/IHO/b12_v3_2_0-BETA_example.json' successfully validated against schema '3.2.0-BETA'.

Run csbschema validate --help for more information about validating against different versions of the schema.

Testing

First, install test dependencies:

$ pip install -r requirements-test.txt

Then run unit tests:

$ pytest tests/unit/test_*.py

Run integration tests, which tests running the csbschema validate command line tool for many of the example CSB documents found in the csbschema repository:

$ bash tests/integration/validate_cmd.sh