Pattern 4 - NDVI and NDWI vegetation indexes v1.0.0
- one input parameter of type
Directory - two output parameters of type
Directory
This scenario takes as input an acquisition, applies two algorithms and generates two outputs.
Implementation: process the NDVI and NDWI taking as input a Landsat-8/9 acquisition. The output include two STAC Catalogs, each with a single STAC Item
This software is licensed under the terms of the Apache License 2.0 license - SPDX short identifier: Apache-2.0
2025-01-01 - 2026-08-28T13:26:06.102 Copyright Make Earth Observation Great Again - > https://ror.org/9999cx000
Project Team
Authors
| Name | Organization | Role | Identifier | |
|---|---|---|---|---|
| Lane, Lois | lois.lane@meoga.com | Make Earth Observation Great Again | Project administration | https://orcid.org/0000-9999-0000-9999 |
| Kent, Clark | clark.kent@meoga.com | Make Earth Observation Great Again | Supervision | https://orcid.org/9999-0000-9999-0000 |
Contributors
| Name | Organization | Role | Identifier | |
|---|---|---|---|---|
| Luthor, Lex | lex.luthor@meoga.com | Make Earth Observation Great Again | Software | None |
User Manual
User Manual can be found on https://eoap.github.io/application-package-patterns/pattern-1/.
Runtime environment
Supported Operating Systems
- Linux
- macOS
- macOS Server
Requirements
pattern-4
CWL Class
Inputs
| Id | Type | Label | Doc |
|---|---|---|---|
aoi |
string | area of interest | area of interest as a bounding box |
epsg |
string | EPSG code | EPSG code |
item |
Directory | Landsat-8/9 acquisition reference | Landsat-8/9 acquisition reference |
Steps
| Id | Runs | Label | Doc |
|---|---|---|---|
| step | #clt |
Compute NDVI and NDWI | Compute NDVI and NDWI from Landsat-8/9 acquisitions |
Outputs
| Id | Type | Label | Doc |
|---|---|---|---|
ndvi |
Directory | NDVI vegetation index | NDVI vegetation index |
ndwi |
Directory | NDWI vegetation index | NDWI vegetation index |
OGC API - Processes
When pattern-4 Workflow is exposed through OGC API - Processes - Part 1: Core, inputs and outputs fields below represent the interface of the getProcessDescription API.
Inputs
Outputs
UML Diagrams
Activity diagram
Learn more about the Activity diagram below.
Component diagram
Learn more about the Component diagram below.
Class diagram
Learn more about the Class diagram below.
Sequence diagram
Learn more about the Sequence diagram below.
State diagram
Learn more about the State diagram below.
Run in step
step
clt
CWL Class
Inputs
| Id | Option | Type |
|---|---|---|
item |
--input-item |
Directory |
aoi |
--aoi |
string |
epsg |
--epsg |
string |
Execution usage example:
runner pattern-4 \
--input-item <ITEM> \
--aoi <AOI> \
--epsg <EPSG>