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input portAnchor input port input port
An input port of an element is used to collect data from another element. On the Scene it is displayed as prominent knob on an element with opened bubble.
output portAnchor output port output port
An output port of an element is used to provide data to another element. On the Scene it is displayed as prominent knob on an element with closed bubble.
slotAnchor slot slot
Each input or output port contains one or several slots. A slot specifies the kind of data that can be passed through it (for example Sequence, Set of annotations, etc.)
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See an example of a schema on the image below:
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<center> <img src="/wiki/download/attachments/1474798/workflow_terms.png"/> </center> |
Your first step is to add necessary workflow elements, for example, by dragging them from the Palette to the Scene:
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<center> <img src="/wiki/download/attachments/1474798/elt_on_palette_and_scene.png"/> </center> |
The added element can be moved around on the Scene by dragging it and can be resized by dragging its borders. Read chapter Manipulating Element to learn what else you can do with workflow elements.
If you have two elements with matching output and input ports, you can make the connection by dragging the arrow between the ports:
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<center> <img src="/wiki/download/attachments/1474798/making_connection.png"/> </center> |
All matching ports of available processes are highlighted while you drag the arrow, besides the arrow sticks to a near match when you drag closer. If an element has a sole matching port, you can just drop the arrow on the element itself to create a correct connection.
Once created, a connection will follow movements of the linked elements; you cannot redirect or reshape the connection arrow but only remove it. You can move the port around an element that it belongs to by dragging it and holding the Alt key at the same time. This is helpful to fine-tune visual layout of a workflow schema.