I’m sure you all have received once or are frequently getting large surfaces from outside sources that need to be trimmed down because you only want to see the area where you will be doing your work. That’s when Data Clips come in handy. On that note we have received a question from one of our customers stating something along these lines:
If we create a data clip boundary or an outer non-destructive boundary, it only hides the surface, and does not reduce it's size. What is the recommended way to actually clip the surface and make it smaller, to keep drawing file size to a minimum? What does a data clip boundary actually do?
The answer is that Data Clip creates a boundary by a polygon you applied so that any other action that comes after is being clipped to that boundary. This means that not only you will be seeing smaller area but you may see some performance improvements since you will have a draiwng file that is smaller. The trick is to move Data clip action prior to creation of the surface.
To do so, please add Data Clip and the go to Surface Properties>Definitions tab and move the Add boundary entry to the top to change the order of creation. Then just rebuild your surface and save the drawing.
Here are the steps with some visuals. The white rectangle is limt of what we want to show and where our work will be performed.
1. To create Data Clip boundary, we select our surface and click on Add Boundaries from Contextual ribbon
2. We then give the name to the boundary, select the Data Clip type and click OK
3. Select rectangle and boundary will be added as the last item, but you will not see what you expect. This is where order makes the difference. we need to make sure the Data Clip is added before the surface is being created.
4. Go to Surface Properties, and in Definition tab you will see that Add boundary is there. Change the order by moving Add boundary to the top and Rebuild your surface.
5. You should now be able to see your limit.
You may also notice that the size of the drawing file went down.