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Filter by Element Class

Using OfClass Shortcut​

  • OfClass applies a class filter (ElementFilterClass) to FilteredElementCollector.
  • Example: 
    ins = FilteredElementCollector(doc).OfClass(FamilyInstance)

Main Revit API Classes​

  • AssemblyInstance, AssemblyType, BeamSystemType
  • CADLinkType, Ceiling, CeilingAndFloor
  • CurtainSystem, Dimension, DirectShape
  • Family, FamilyInstance, FilledRegion
  • Floor, FloorType, Grid
  • ImageType, ImageView, IndependentTag
  • Level, LevelType, MEPCurve
  • Material, ModelText, ModelTextType
  • PanelType, ParameterElement, Phase
  • ProjectInfo, ProjectLocation, PropertyLine
  • Revision, RevitLinkInstance, RoofType
  • SharedParameterElement, SlabEdge, SlabEdgeType
  • Sweep, SweepType, TableView
  • TextElement, TextElementType, TilePattern
  • View3D, ViewFamilyType, ViewPlan
  • ViewPlanType, ViewSchedule, ViewSection
  • ViewSheet, Viewport, WallFoundation
  • WallFoundationType, WallSweep, WallType

Importing Necessary Libraries​

  • To search for specific elements like PipeSegment, import the relevant library: 
    from Autodesk.Revit.DB.Plumbing import *

Constructing Filter Instance​

  • Allows flexibility to invert the filter.
  • Example without inversion: 
    Filter = ElementClassFilter(Material)
    allMat = FilteredElementCollector(doc).WherePasses(Filter).ToElements()
  • Example with inversion: 
    InvertFilter = ElementClassFilter(Material, True)
    allMat = FilteredElementCollector(doc).WherePasses(InvertFilter).ToElements()

Note: Using the OfClass shortcut is quicker and more elegant if inversion is not needed.

Copy code
InvertFilter = ElementClassFilter(Material, True)
allMat = FilteredElementCollector(doc).WherePasses(InvertFilter).ToElements()
Note: If you do not need to invert the filter, it will be quicker and more elegant to use the shortcut, as discussed at the beginning of this section.