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add more processing:expression examples for python, docker and generic URI #33

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add more processing:expression examples for python, docker and generi…
fmigneault Apr 4, 2024
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fmigneault Apr 4, 2024
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Merge branch 'main' into more-expr-examples
fmigneault Jul 14, 2025
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1 change: 1 addition & 0 deletions CHANGELOG.md
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Expand Up @@ -9,6 +9,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
### Added

- Relation type `processing-validation`
- Provide more examples of `processing:expression` for `python`, `docker` and `uri` formats.

### Changed

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11 changes: 7 additions & 4 deletions README.md
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Expand Up @@ -121,11 +121,14 @@ This list is not exhaustive and can be extended with the processing level specif

Potential expression formats with examples:

| Format | Type | Description | Example |
| ----------- | ------ | ----------- | ------- |
| `gdal-calc` | string | A [`gdal_calc.py`](https://gdal.org/programs/gdal_calc.html) expression based on numpy syntax. | `A*logical_or(A<=177,A>=185)` |
| Format | Type | Description | Example |
|-------------| ------ |--------------------------------------------------------------------------------------------------------| ------- |
| `gdal-calc` | string | A [`gdal_calc.py`](https://gdal.org/programs/gdal_calc.html) expression based on numpy syntax. | `A*logical_or(A<=177,A>=185)` |
| `openeo` | object | [openEO process](https://openeo.org/documentation/1.0/developers/api/reference.html#section/Processes) | [Example](https://raw.githubusercontent.com/Open-EO/openeo-processes/1.2.0/normalized_difference.json) |
| `rio-calc` | string | A [rio-calc](https://rasterio.readthedocs.io/en/latest/topics/calc.html) (RasterIO) expression | `(b4-b1)/(b4+b1)` |
| `rio-calc` | string | A [rio-calc](https://rasterio.readthedocs.io/en/latest/topics/calc.html) (RasterIO) expression | `(b4-b1)/(b4+b1)` |
| `python` | string | A Python entry point reference. | `my_package.my_module:my_processing_function` or `my_package.my_module:MyClass.my_method` |
| `docker` | string | An URI with image and tag to a Docker. | `ghcr.io/NAMESPACE/IMAGE_NAME:latest` |
| `uri` | string | An URI to some binary or script. | `{"href": "https://raw.githubusercontent.com/ORG/REPO/TAG/package/cli.py", "type": "text/x-python"}` |

## Relation types

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