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DocumentationTutorialBuilding a DeltaTwin®Create Workflow

Create the DeltaTwin® workflow

In the context of DeltaTwin®, the worfklow file (workflow.yml) defines how different parts of the DeltaTwin® (models) work together to achieve the desired outcome. In the case of the rotation scenario, we distinguish 3 main elements:

  • the inputs
  • the model used for rotation
  • the output (resulting image)

We want to describe this workflow:


workflow illustration

To proceed:

Edit the workflow.yml file

Reference each nodes

Reference each nodes (i.e. inputs, models and outputs name) of your workflow by specifying an id number and its reference.

nodes:
  - id: 0
    ref: inputs.image
  - id: 1
    ref: inputs.angle
  - id: 2
    ref: models.rotation
  - id: 3
    ref: outputs.rotatedImage

The reference provides the node status, whether it is an input, output or model, and its name within the workflow sheme.

Define for each edges, the source (from) and the destination (to)

Define for each edges, the source (from) and the destination (to) to describe the relationships between nodes as illustrated below :

edges:
  - from:
      id: 0
    to:
      id: 2
      port: img
  - from:
      id: 1
    to:
      id: 2
      port: angle

The property port is the name of the output/input for the destination node. In our case, the rotation node has 2 inputs :

  • the image (#0) referenced as img
  • the angle (#1) referenced as angle

An example workflow file is downloadable here (download).

Implement ScriptRun DeltaTwin