Select all Elements on Level "X" which overlap shapes on Level Y

Question

Specifically, this is for mapping. 
 I'm looking for a way to quickly find elements which overlap a shape (polygon). 
 Specifically, this is for mapping. For this example, I have elements on 2 levels: "Obscured Area" which are closed Shapes and "Breaklines" which could be of various types (typically Line String or Shape.) 
 I want to quickly find any elements on the "Breakline" level that cross or fall within the "Obscured Area" shapes so that I can quickly review and determine whether these are valid or not based on project parameters. 
 We are using MicroStation v8i SS3. Thanks.

mwlong · Answer

I think you can accomplish this with Data Cleanup. I would first freeze all levels except those that you are concerned with finding overlaps (you may need to do this several times, once for each level). Then open Data Cleanup (<Utilities <Data Cleanup) and under the General Tab check on Create Backup (always a good idea) & Save Flags in File (adjust the flag size by experimenting). Set Duplicates & Gaps to -none-, but set Overlaps to Flag. Go to the Overlaps tab and set anything there that will be relevant (read Help file for explanations). Then click Apply. This will add Flags to all overlapping elements. 
 You may be able to set the Overlaps to Interactive on the General Tab. This should navigate to each overlapping element, but the process may stop when you switch tools to modify or check an element. Also if you leave the overlap intact and you restart the process it will continually find the same overlaps. 
 The first method you can delete the flags as you go so you know whether you already looked at a certain area.

Ron Jones · Answer

Hi David, 
 Here's a video of a fairly simple method to create highlights of the overlaps so you can more easily find the affected locations. This method should work fine in both V8I and Connect Edition. 
 
 Regards, Ron

Select all Elements on Level "X" which overlap shapes on Level Y

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