In Autodesk Revit Architecture, Revit Structure and Revit MEP you control visibility and graphic display of elements using Filters.
In any database system, a filter can be used to find a subset of a larger collection of items based on some criteria that the desired items (in the subset) share in common. For example, selecting all Doors in a model would give you every Door on all floors of all sizes. If however, you were interested in only the 3'-0" wide Doors, or just the Doors on the third floor, or even only the 3'-0" wide Doors that were also on the third floor, then you would need a tool to help you isolate just the Doors that met this criteria. This is what Filters accomplish in Revit. The Filter command allows us to create a criterion and then use it as a basis to modify the display of elements on screen in a particular view or views. The Filter feature is more advanced and offers a way to modify the display in a view in nearly limitless ways not limited to the display hierarchy alone.
Working with filters is a multi-step process. Naturally the first step is realizing that you have the need to filter something. Next, you use the Filter dialog to set up one or more filter criteria. However, simply creating filters is only the first step. Without applying your filters to the Visibility/Graphic Overrides dialog of a view, they do nothing in your project.
The potential of Filters is nearly limitless. Let’s look at a simple example. Suppose you have a project with doors that are fire rated. I want to see difference in graphics between fire rated doors and nonfire rated doors. Making such a variation in graphical display can be accomplished with Filters applied to the view Visibility/Graphics. The Filter dialog (View tab, Graphics panel) offers many options. On the left, you can create a new filter, select an existing one, rename, duplicate or delete them. The first filter criterion is the category or categories to which the filter will apply. If you select more than one category, the parameters that they share in common will appear on the right. On the right side, choose one or more parameters to filter by.
Next we add the filter in Visibility Graphics Override. Click View tab Graphics panel Visibility/Graphics, or type VV or VG to open the Visibility/Graphics dialog.Click View tabGraphics pane lVisibility/Graphics, or type VV or VG to open the Visibility/Graphics dialog. Click the Filters tab and click Add and select the filter created. Override the projection, surface, and cut line styles and projection patterns as necessary.
You also can Check the Halftone option to make filtered objects appear at halftone, select or clear the Visibility check box to turn visibility of the filtered object on or off, Check the Transparent option to make filtered objects transparent.
The potential of Filters is limitless. Experiment with them and you find many uses just waiting to be tapped.
Can you give me an example of what you are trying to do and issues you are having?
Posted by: Veredith Keller | 08/06/2010 at 08:35 AM