flowchart.Flowchart — pyqtgraph 0.9.8 documentation

### Navigation

- index
- modules |
- next |
- previous |
- pyqtgraph 0.9.8 documentation »
- API Reference »
- Visual Programming with Flowcharts »

# flowchart.Flowchart

class `pyqtgraph.flowchart.` `Flowchart`(terminals=None, name=None, filePath=None)
  `__init__`(terminals=None, name=None, filePath=None)
  `chartGraphicsItem`()

    Return the graphicsItem which displays the internals of this flowchart. (graphicsItem() still returns the external-view item)

  `connectTerminals`(term1, term2)

    Connect two terminals together within this flowchart.

  `internalTerminal`(term)

    If the terminal belongs to the external Node, return the corresponding internal terminal

  `nodeOutputChanged`(startNode)

    Triggered when a node’s output values have changed. (NOT called during process()) Propagates new data forward through network.

  `output`()

    Return a dict of the values on the Flowchart’s output terminals.

  `process`(**args)

    Process data through the flowchart, returning the output.

    Keyword arguments must be the names of input terminals. The return value is a dict with one key per output terminal.

  `processOrder`()

    Return the order of operations required to process this chart. The order returned should look like [(‘p’, node1), (‘p’, node2), (‘d’, terminal1), ...] where each tuple specifies either (p)rocess this node or (d)elete the result from this terminal

  `setInput`(**args)

    Set the input values of the flowchart. This will automatically propagate the new values throughout the flowchart, (possibly) causing the output to change.

### Navigation

- index
- modules |
- next |
- previous |
- pyqtgraph 0.9.8 documentation »
- API Reference »
- Visual Programming with Flowcharts »