STAC Item¶
Due to CWL Inputs schema limitations:
- STAC Item extension can be declared but they are not supported, since CWL Inputs schema does not support the
additionalProperties; - Currently, STAC Item
geometryfield is supported only if its value isnull, since discrimination of other types is not fully supported.
So STAC Item support is limited even in its Vanilla form, pass it as a reference as URI for the full support.
CWL example¶
cwlVersion: v1.2
class: CommandLineTool
label: "Echo STAC Item"
baseCommand: echo
requirements:
- class: InlineJavascriptRequirement
- class: SchemaDefRequirement
types:
- $import: https://raw.githubusercontent.com/eoap/schemas/main/stac.yaml
inputs:
stac_item:
type: https://raw.githubusercontent.com/eoap/schemas/main/stac.yaml#Item
label: "STAC Catalog"
doc: "STAC Catalog defined in STAC format"
inputBinding:
valueFrom: |
${
// Validate if type is 'Feature'
if ('Feature' != inputs.stac_item.type) {
throw "Invalid STAC type: expected 'Feature', got '" + inputs.stac_item.type + "'";
}
// get the STAC Item id
return "STAC Item ID: " + inputs.stac_item.id;
}
outputs:
echo_output:
type: stdout
stdout: echo_output.txt
Input example¶
stac_item:
type: Feature
stac_version: 1.0.0
stac_extensions:
- https://stac-extensions.github.io/raster/v1.1.0/schema.json
- https://stac-extensions.github.io/eo/v1.1.0/schema.json
- https://stac-extensions.github.io/view/v1.0.0/schema.json
- https://stac-extensions.github.io/projection/v2.0.0/schema.json
- https://landsat.usgs.gov/stac/landsat-extension/v1.1.1/schema.json
- https://stac-extensions.github.io/classification/v2.0.0/schema.json
- https://stac-extensions.github.io/scientific/v1.0.0/schema.json
id: LC08_L2SP_042033_20231007_02_T1
bbox:
- 8.3986668
- 47.3783503
- 8.4571096
- 47.4058268
properties:
gsd: 30
created: '2023-10-13T09:19:56.326826Z'
datetime: '2023-10-07T18:33:27.281508Z'
platform: landsat-8
description: Landsat Collection 2 Level-2
instruments:
- oli
- tirs
links:
- rel: collection
href: https://planetarycomputer.microsoft.com/api/stac/v1/collections/landsat-c2-l2
type: application/json
- rel: parent
href: https://planetarycomputer.microsoft.com/api/stac/v1/collections/landsat-c2-l2
type: application/json
- rel: root
href: https://planetarycomputer.microsoft.com/api/stac/v1/
type: application/json
- rel: cite-as
href: https://doi.org/10.5066/P9OGBGM6
title: Landsat 8-9 OLI/TIRS Collection 2 Level-2
- rel: via
href: https://landsatlook.usgs.gov/stac-server/collections/landsat-c2l2-sr/items/LC08_L2SP_042033_20231007_20231011_02_T1_SR
type: application/json
title: USGS STAC Item
- rel: via
href: https://landsatlook.usgs.gov/stac-server/collections/landsat-c2l2-st/items/LC08_L2SP_042033_20231007_20231011_02_T1_ST
type: application/json
title: USGS STAC Item
- rel: preview
href: https://planetarycomputer.microsoft.com/api/data/v1/item/map?collection=landsat-c2-l2&item=LC08_L2SP_042033_20231007_02_T1
type: text/html
title: Map of item
- rel: derived_from
href: https://planetarycomputer.microsoft.com/api/stac/v1/collections/landsat-c2-l2/items/LC08_L2SP_042033_20231007_02_T1
- rel: self
href: "/data/work/github/eoap/application-package-patterns/data/LC08_L2SP_042033_20231007_02_T1/LC08_L2SP_042033_20231007_02_T1.json"
type: application/json
assets:
qa:
href: LC08_L2SP_042033_20231007_20231011_02_T1_ST_QA.TIF
type: image/tiff; application=geotiff; profile=cloud-optimized
title: Surface Temperature Quality Assessment Band
description: Collection 2 Level-2 Quality Assessment Band (ST_QA) Surface Temperature Product
roles:
- data
ang:
href: LC08_L2SP_042033_20231007_20231011_02_T1_ANG.txt
type: text/plain
title: Angle Coefficients File
description: Collection 2 Level-1 Angle Coefficients File
roles:
- metadata
red:
href: LC08_L2SP_042033_20231007_20231011_02_T1_SR_B4.TIF
type: image/tiff; application=geotiff; profile=cloud-optimized
title: Red Band
description: Collection 2 Level-2 Red Band (SR_B4) Surface Reflectance
roles:
- data
- reflectance
blue:
href: LC08_L2SP_042033_20231007_20231011_02_T1_SR_B2.TIF
type: image/tiff; application=geotiff; profile=cloud-optimized
title: Blue Band
description: Collection 2 Level-2 Blue Band (SR_B2) Surface Reflectance
roles:
- data
- reflectance
drad:
href: LC08_L2SP_042033_20231007_20231011_02_T1_ST_DRAD.TIF
type: image/tiff; application=geotiff; profile=cloud-optimized
title: Downwelled Radiance Band
description: Collection 2 Level-2 Downwelled Radiance Band (ST_DRAD) Surface Temperature Product
roles:
- data
emis:
href: LC08_L2SP_042033_20231007_20231011_02_T1_ST_EMIS.TIF
type: image/tiff; application=geotiff; profile=cloud-optimized
title: Emissivity Band
description: Collection 2 Level-2 Emissivity Band (ST_EMIS) Surface Temperature Product
roles:
- data
emsd:
href: LC08_L2SP_042033_20231007_20231011_02_T1_ST_EMSD.TIF
type: image/tiff; application=geotiff; profile=cloud-optimized
title: Emissivity Standard Deviation Band
description: Collection 2 Level-2 Emissivity Standard Deviation Band (ST_EMSD) Surface Temperature Product
roles:
- data
trad:
href: LC08_L2SP_042033_20231007_20231011_02_T1_ST_TRAD.TIF
type: image/tiff; application=geotiff; profile=cloud-optimized
title: Thermal Radiance Band
description: Collection 2 Level-2 Thermal Radiance Band (ST_TRAD) Surface Temperature Product
roles:
- data
urad:
href: LC08_L2SP_042033_20231007_20231011_02_T1_ST_URAD.TIF
type: image/tiff; application=geotiff; profile=cloud-optimized
title: Upwelled Radiance Band
description: Collection 2 Level-2 Upwelled Radiance Band (ST_URAD) Surface Temperature Product
roles:
- data
atran:
href: LC08_L2SP_042033_20231007_20231011_02_T1_ST_ATRAN.TIF
type: image/tiff; application=geotiff; profile=cloud-optimized
title: Atmospheric Transmittance Band
description: Collection 2 Level-2 Atmospheric Transmittance Band (ST_ATRAN) Surface Temperature Product
roles:
- data
cdist:
href: LC08_L2SP_042033_20231007_20231011_02_T1_ST_CDIST.TIF
type: image/tiff; application=geotiff; profile=cloud-optimized
title: Cloud Distance Band
description: Collection 2 Level-2 Cloud Distance Band (ST_CDIST) Surface Temperature Product
roles:
- data
green:
href: LC08_L2SP_042033_20231007_20231011_02_T1_SR_B3.TIF
type: image/tiff; application=geotiff; profile=cloud-optimized
title: Green Band
description: Collection 2 Level-2 Green Band (SR_B3) Surface Reflectance
roles:
- data
- reflectance
nir08:
href: LC08_L2SP_042033_20231007_20231011_02_T1_SR_B5.TIF
type: image/tiff; application=geotiff; profile=cloud-optimized
title: Near Infrared Band 0.8
description: Collection 2 Level-2 Near Infrared Band 0.8 (SR_B5) Surface Reflectance
roles:
- data
- reflectance
lwir11:
href: LC08_L2SP_042033_20231007_20231011_02_T1_ST_B10.TIF
type: image/tiff; application=geotiff; profile=cloud-optimized
title: Surface Temperature Band
description: Collection 2 Level-2 Thermal Infrared Band (ST_B10) Surface Temperature
gsd: 100
roles:
- data
- temperature
swir16:
href: LC08_L2SP_042033_20231007_20231011_02_T1_SR_B6.TIF
type: image/tiff; application=geotiff; profile=cloud-optimized
title: Short-wave Infrared Band 1.6
description: Collection 2 Level-2 Short-wave Infrared Band 1.6 (SR_B6) Surface Reflectance
roles:
- data
- reflectance
swir22:
href: LC08_L2SP_042033_20231007_20231011_02_T1_SR_B7.TIF
type: image/tiff; application=geotiff; profile=cloud-optimized
title: Short-wave Infrared Band 2.2
description: Collection 2 Level-2 Short-wave Infrared Band 2.2 (SR_B7) Surface Reflectance
roles:
- data
- reflectance
coastal:
href: LC08_L2SP_042033_20231007_20231011_02_T1_SR_B1.TIF
type: image/tiff; application=geotiff; profile=cloud-optimized
title: Coastal/Aerosol Band
description: Collection 2 Level-2 Coastal/Aerosol Band (SR_B1) Surface Reflectance
roles:
- data
- reflectance
mtl.txt:
href: LC08_L2SP_042033_20231007_20231011_02_T1_MTL.txt
type: text/plain
title: Product Metadata File (txt)
description: Collection 2 Level-2 Product Metadata File (txt)
roles:
- metadata
mtl.xml:
href: LC08_L2SP_042033_20231007_20231011_02_T1_MTL.xml
type: application/xml
title: Product Metadata File (xml)
description: Collection 2 Level-2 Product Metadata File (xml)
roles:
- metadata
mtl.json:
href: LC08_L2SP_042033_20231007_20231011_02_T1_MTL.json
type: application/json
title: Product Metadata File (json)
description: Collection 2 Level-2 Product Metadata File (json)
roles:
- metadata
qa_pixel:
href: LC08_L2SP_042033_20231007_20231011_02_T1_QA_PIXEL.TIF
type: image/tiff; application=geotiff; profile=cloud-optimized
title: Pixel Quality Assessment Band
description: Collection 2 Level-1 Pixel Quality Assessment Band (QA_PIXEL)
roles:
- cloud
- cloud-shadow
- snow-ice
- water-mask
qa_radsat:
href: LC08_L2SP_042033_20231007_20231011_02_T1_QA_RADSAT.TIF
type: image/tiff; application=geotiff; profile=cloud-optimized
title: Radiometric Saturation and Terrain Occlusion Quality Assessment Band
description: Collection 2 Level-1 Radiometric Saturation and Terrain Occlusion Quality Assessment Band (QA_RADSAT)
roles:
- saturation
qa_aerosol:
href: LC08_L2SP_042033_20231007_20231011_02_T1_SR_QA_AEROSOL.TIF
type: image/tiff; application=geotiff; profile=cloud-optimized
title: Aerosol Quality Assessment Band
description: Collection 2 Level-2 Aerosol Quality Assessment Band (SR_QA_AEROSOL) Surface Reflectance Product
roles:
- data-mask
- water-mask
tilejson:
href: tilejson.json
type: application/json
title: TileJSON with default rendering
roles:
- tiles
rendered_preview:
href: preview.png
type: image/png
title: Rendered preview
rel: preview
roles:
- overview
collection: landsat-c2-l2
Execute the example¶
Run the example with:
cwltool examples/stac/catalog.cwl examples/stac/catalog.yaml
This produces the output:
INFO /opt/hostedtoolcache/Python/3.13.5/x64/bin/cwltool 3.1.20250715140722
INFO Resolved '../../examples/stac/item.cwl' to 'file:///home/runner/work/schemas/schemas/examples/stac/item.cwl'
INFO [job item.cwl] /tmp/l72_xdj_$ echo \
'STAC Item ID: LC08_L2SP_042033_20231007_02_T1' > /tmp/l72_xdj_/echo_output.txt
INFO [job item.cwl] completed success
INFO Final process status is success
The content of the echo_output.txt file is:
STAC Item ID: LC08_L2SP_042033_20231007_02_T1