Reliability Analysis: uq_display doesn't display anything

UQ with UQLab Community Q&A and How To
1

Hello there,

I wrote a small script based on UQLink which runs a Python FEM solver which returns the result of a limit state function. uq_print works just fine but I’d like to access the figures created by uq_display, just as in the reference manual. Unfortunately, I get none. Does anybody know what I’m doing wrong? There is no error message. I’m using Matlab R2020b on Ubuntu 18.04. In other scripts, plots work flawlessly.

Best
Lucas

uqlab 

modelopts.Type = 'UQLink' ;

modelopts.Command = 'python3 beam_bucklingClass.py parameters.inp' ;
modelopts.Template = 'parameters.inp.tpl' ;
modelopts.Output.Parser = 'uq_readOutput' ;
modelopts.Output.FileName = 'beamPython.out' ;

myModel = uq_createModel(modelopts) ;



InputOpts.Marginals(1).Name = '1';  
InputOpts.Marginals(1).Type = 'Gaussian';
InputOpts.Marginals(1).Moments = [0.01 0.001];

InputOpts.Marginals(2).Name = '2';  
InputOpts.Marginals(2).Type = 'Gaussian';
InputOpts.Marginals(2).Moments = [0.0011 0.00011];

InputOpts.Marginals(3).Name = '3';  
InputOpts.Marginals(3).Type = 'Gaussian';
InputOpts.Marginals(3).Moments = [0.0011 0.00011];

myInput = uq_createInput(InputOpts);

MCOpts.Type = 'Reliability';
MCOpts.Method = 'MCS';
MCOpts.Simulation.MaxSampleSize = 20;
MCAnalysis = uq_createAnalysis(MCOpts);
uq_print(MCAnalysis)
uq_display(MCAnalysis)
2

Hi Lucas,

Sorry for replying so late. You probably have already found a reason or workaround for this problem. If yes, how did you fix it?

If not, could you set a breakpoint inside uq_display_uq_reliability.m and check why there are no figures being generated?

3

Hi Nora,

no problem! Thank you so much for helping me out. I didn’t find a solution yet and just settled with using the printed output. It’s a great idea to look into the source, thanks! I will try it as soon as I’m back at my workstation and post my results here.

Best,
Lucas