This node simply takes an input set of data, and a Boolean switch. If the switch is true, the data is output. If the switch is false, the output is Empty List. This can be added to control the running of a script with master Boolean switches, or inline validation. In the case below, the List Length Validator confirms the input data has matching lengths, and the true output is used to control the flow in the Switch node.

Workflow: Analysis of Evacuation Path Model Lines

Revit Beyond BIM has posted the steps and packages necessary to perform analysis on some model lines in Revit that represent the evacuation path. Also, Dynamo is used to create an analysis display for the accumulated distance of travel.
Evacuation Path Analysis - 06

You can download the Revit file and Dynamo script by clicking on this link.


Get View Dependent Elements from Linked Document

This will get view dependent elements (like Detail Items such as Filled Regions) from a linked document. Inputs:

· Linked document filename as string

· Category name

· Type name (results are filtered to include only this type)

· The “owner view” or the view that these elements live inside in the linked document

Batch Export Revit Views to IFC

This node takes 3 inputs:

  • View prefix for views you want to export to IFC
  • Target directory for the IFC files
  • Optional: IFC version, current default is IFC2x3

When the node is Run, it filters through the Revit views to find those with the specified prefix, then it exports them as individual IFC files to the target directory. You could combine this with Web Request node to enable periodic execution (ie. automatic batch export).

Full credit goes to those who put the framework of this together over on the forum (also see ‘Credits’ in image below).