Revit: Understanding Model and Annotation Crop Regions

When you are creating your model views in Revit, there will many situations where you need to limit the extent of a particular view. For example, in a Floor Plan view, you may wish to just focus in on a single room. This is what Crop Regions are for. They enable you to crop your view to just show that parts you are interested in….

01_model_anno_crop

 

The Crop Region can be seen (in the above image) as the blue box, with a “control” handle (the filled blue circles) on each of it’s four sides. You simply use the control grips to resize the boundary to the area you need.

But did you known that that there are actually two different Crop Regions in Revit? The primary Crop Region (as shown in the image above) is the Model Crop Region. But there is also another one called the Annotation Crop Region.

Just before we take a look at how we activate the Annotation Crop Region, let’s ask the Question: Why do we even need a second Crop Region? To explain that, let’s go back to the above scenario. I will turn off the Cropping effect, but leave the Crop Region visible- ie we can still see the boundary of the Crop Region, but it is not now currently cropping the view….

02_model_anno_crop

You will also see that I’ve added some Tags to some of the model objects in the view. Note how the Tags themselves lie outside of the Crop Region boundary. If I now turn on the cropping effect of our Crop Region…

04_model_anno_crop

 

…you’ll notice that the model has been cropped but the Tags (which lie outside of the boundary) have not- ie they are still visible. Let’s go ahead and turn on the visibility of the Annotation Crop Region. To do so, ensure that there are no elements selected in the open view- this will then display the properties of the view itself in the Properties Palette. If you look in the second group (“Extents“) of parameters, you will find one called “Annotation Crop” which is is simple tick box parameter (ie either on or off)

 

05_model_anno_crop

 

 

I’m going to go ahead and turn it on by checking the box. As soon as I do this, I now see the boundary of a second Crop Region in my view….

 

06_model_anno_crop

 

The outer dashed boundary is the Annotation Crop Region. You can adjust it’s size using the the control grips on each edge. The minimum size you can shrink it to is just slightly larger than the Model Annotation Crop Region. If I move the left hand boundary over so it’s hard against the Model Crop Region….

07_model_anno_crop

 

…..you’ll notice how the Tag that was on the left hand side of the view has now been cropped off. So by using a combination of the Model Crop Region and Annotation Crop Region we can tailor our views to show exactly what we need. If we didn’t have the facility to crop Annotations separately, we would always need to ensure that any annotations lay completely inside the model crop region boundary- which can sometimes make a cropped view too “busy” to be useful.

 

If you’re new to Revit Architecture, you may be interested in my freeComplete Beginner’s Guide to Revit Architecture84 part video tutorial course.

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4 Comments

  1. Are you able to make the annotation polygonal? There only seems to be the option for a rectangle annotation crop on an odd shaped crop or plan region.

    Cheers

    • Hi Dave,

      No, (as you have deduced) the Annotation Crops are purely rectangular- irrespective of the shape of the primary Model Crop region.

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