Bug #2821

3d surface area query over time does not match query value

Added by Cyrus Harrison 8 days ago. Updated about 17 hours ago.

Status:Pending Start:05/18/2017
Priority:High Due date:
Assigned to:Kathleen Biagas % Done:


Target version:-
Likelihood:3 - Occasional OS:All
Severity:5 - Very Serious Support Group:Any
Found in Version:2.12.1


using varying.visit (from the tutorial data)
create a PC plot of temp, add an isosurface opeartor

query the 3d surface area at the first time step:

The total Surface Area is 4151.63

now do a query over time:
The first point on this curve is 5254.6


Updated by Cyrus Harrison 8 days ago

these should be the same, we need a test suite script that compares query at teach time step vs query over time result

Updated by Cyrus Harrison 7 days ago

  • Severity changed from 2 - Minor Irritation to 5 - Very Serious

Updated by Mark Miller 7 days ago

Just curious but is the query value on the 2nd timestep? Is there an obvious off-by-one error?

Also, don't know the details of QOT but is it iterating over actual time values, cycles or state indices? Reason I ask is that maybe an over-time curve is somehow doing a fixed delta-t and then finding nearest neighbor state to actually use for the value. Otherwise, it would have to produce a curve with arbitary times as determined by the input database's states.

Updated by Cyrus Harrison 7 days ago

Until i created the more complete example I though that could have been the case.

With varying.visit, the results very different - one curve increases and then decreases, the other does the opposite -- the actually only look similar on the end points.

For wave.visit, the results for the query time don't even appear to change, but they clearly should.

Updated by Eric Brugger 4 days ago

  • Assigned to set to Kathleen Biagas

Updated by Eric Brugger 3 days ago

  • Priority changed from Normal to High

I also had Jose Milovich and Karnig Mikaelian report the same issue. Karnig was doing a boundary plot with 2 materials selected. I don't recall what Jose was doing.

Updated by Eric Brugger about 17 hours ago

  • Status changed from New to Pending

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