Core slice size error

I am trying to simulate some core-shell particles embedded in a film but I am getting an error. I only get the error when I try to simulate core-shell particles (as opposed to just a particle consisting of a single material). This is the whole error message:

PS C:\Users\Pedro> & C:/python3/python.exe "c:/Users/Pedro/OneDrive - McMaster University/PhD - School/Research/Projects/X Ray Scattering and Diffraction/GISAXS Analysis/Python code/GISAXSSimulation_CoreShellEmbedded.py" TIFFReadDirectory: Warning, Unknown field with tag 34710 (0x8796) encountered. Traceback (most recent call last): File "c:\Users\Pedro\OneDrive - McMaster University\PhD - School\Research\Projects\X Ray Scattering and Diffraction\GISAXS Analysis\Python code\GISAXSSimulation_CoreShellEmbedded.py", line 141, in minimizer.minimize(fit_objective.evaluate, P) File "C:\python3\Lib\site-packages\bornagain\lib\libBornAgainFit.py", line 2192, in minimize result = callback(pars) ^^^^^^^^^^^^^^ File "C:\python3\Lib\site-packages\bornagain\lib\libBornAgainSim.py", line 2478, in evaluate return self.evaluate_cpp(self.convert_params(params)) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "C:\python3\Lib\site-packages\bornagain\lib\libBornAgainSim.py", line 2348, in evaluate_cpp return _libBornAgainSim.FitObjective_evaluate_cpp(self, params) ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ RuntimeError: BornAgain C++ Exception: BUG: Assertion core_slices.size() == 1 failed in C:\tmp\bornagain\Resample\Processed\Slicer.cpp, line 247. Please report this to the maintainers:

• https://jugit.fz-juelich.de/mlz/bornagain/-/issues/new or
• contact@bornagainproject.org.

Attached is the python script. GISAXSSimulation_CoreShellEmbedded.py

Thanks for your help and attention.

changed the description

changed the description

The error also seems to disappear when the core is made larger than the shell.

Thank you for reporting this issue.

Your script requires an experimental data file. Can you possibly provide us a minimal version of the script that does without external data and without fitting? Just a simulation that fails at once?

Which version of BornAgain are you using?

added bug label

added Core label

removed Core label

added Core user request labels

Thanks for the quick response! I have modified the code to strip it to its bare essentials removing all unnecessary components. I have also removed the fitting and any references to the real data. The same error still occurs.

Note that the error goes away when I remove the layer that the particles are suppose to be embedded in.

GISAXSSimulation_CoreShellEmbedded_minimal.py

Your script still requires me to load a data file. Can you remove all that, so that we left with a pure simulation script? Thanks!

Sorry I attached the wrong file. My mistake.

GISAXSSimulation_MonolayerAttempt_Minimal.py

I tried under BornAgain 21.2: your script ran through, no error, no warning.

Please retry under 21.2, and reopen this issue if problems persist.

I still get the same error if I change the simulated structure. If the structures are buried Hemi ellipsoids I get the error:

GISAXSSimulation_MonolayerAttempt_Minimal_2.py

For that script I get under BornAgain 21.2: "Slicing of HemiEllipsoid not supported". What error do you get?

closed

reopened

Closing here as I opened a new issue #992 regarding support for sliced ellipsoids.

Definite closure. Discussion may be continued under #992 or through private message.

closed