[VBA CE] Compare elements inconsistent results

Oto said:

Using code from http://www.la-solutions.co.uk/content/CONNECT/mvba/MVBA-ElementsIdentical.htm

I've revised the function declaration on that page.  I doubt that's the source of your problem, but it helps if I publish correct information!

How sure you are about the flag constants? For me it seems removing COMPAREOPT_IGNORE_LEVEL doesn't work it still ignores level.

Hmm, it seems I missed that function in the help, thanks for pointing it out!

Hi Oto,

I have tested the code example from Jon and I could not detect any issue with ignoring levels

I have started with a minimized test case and the test included the following steps:

• open a new dgn file and place a line
• copy this line element to have a second line with identical geometry.
• created a new level and moved the second line on the new level.

It is now important to keep in mind, that there are 3 different properties between these 2 lines:

different ID´s
different "Modified" property
different level

Using now Jon´s code example to compare elements I get different results if I use these different flags:

Result that  2 elements are not identical with:

Const COMPAREOPT_STANDARD_IGNORES = COMPAREOPT_IGNORE_IDS _
Or COMPAREOPT_IGNORE_MODIFIED

and result that the 2 elements identical with:

Const COMPAREOPT_STANDARD_IGNORES = COMPAREOPT_IGNORE_IDS _
Or COMPAREOPT_IGNORE_MODIFIED _
Or COMPAREOPT_IGNORE_LEVEL

Best regards,
Artur 

Could you test on my example DGN?

Hi Oto,

Can you provide a DGN file with Models for: GoodResults and BadResults; for anyone trying to help be 100% certain of the still unknown results you are experiencing?  Unless we know what a Good patient and Bad patient (for you) looks like this is likely going to take longer than necessary towards helping to resolve your issue (or a bug).

Thank you,
Bob

Should work equal to v8i Data cleanup. When ignore levels is off (Levels checkbox is on in Cleanup.ma), none of lines should be deleted in Duplicates-levels.dgn

Oto,

This was quite the undertaking, but in my test file (also attached) it works using the criteria I deem acceptable to consider identical.

• The Red Lines are identical and share the same start & end points
• The Orange lines are identical, but have opposing start & end points
• The Green Lines have different line styles so aren't identical.

It does not use the MDL code from Jon's article, it uses simple principles of sequentially checking element attributes and eventually comparing vertices. 

It is designed to work ONLY with line elements, other element types would require a lot more coding which I don't have time for.PoorMansDeldup.mvbaDuplicates.dgn

Hi Oto,

I have tested with your example and from the test results it looks like the model ignore flag:
COMPAREOPT_IGNORE_MODEL_DIFFS

let the elements be identical although they are not. 
If I removed this flag from COMPAREOPT_STANDARD_IGNORES the results were like expected, also the level ignore flag is working correct - like the results i received with my previous test.

This needs to be investigated in detail from our side, in the meantime I would like to ask you to test the same if you can confirm this behavior.

Best regards,

Artur

Artur Goldsweer said:

it looks like the model ignore flag:
COMPAREOPT_IGNORE_MODEL_DIFFS

let the elements be identical although they are not

Good work, Mr Holmes!

I have tested in C++ API with same results and filed Bug # 864071 to address this issue.

Best regards,

Artur

Barry Lothian said:

other element types would require a lot more coding which I don't have time for

Thanks. Other types I could implement later if needed.

Artur Goldsweer said:

the level ignore flag is working correct

Actually intent is not to ignore levels so elements on different levels are not considered duplicates.

Barry Lothian said:

other element types would require a lot more coding which I don't have time for

Thanks. Other types I could implement later if needed.

Artur Goldsweer said:

the level ignore flag is working correct

Actually intent is not to ignore levels so elements on different levels are not considered duplicates.