# Error when Isight calls UQlab

**URL:** <https://uqworld.org/t/error-when-isight-calls-uqlab/1747>\
**Category:** Community Q&A and How To\
**Tags:** pce\
**Created:** [December 4, 2022, 12:01pm UTC](https://uqworld.org/t/error-when-isight-calls-uqlab/1747 "2022-12-04T12:01:38Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![zfzcyt0923](https://uqworld.org/letter_avatar_proxy/v4/letter/z/dec6dc/32.png) [@zfzcyt0923](https://uqworld.org/u/zfzcyt0923)\
**Post date:** [December 4, 2022, 12:01pm UTC](https://uqworld.org/t/error-when-isight-calls-uqlab/1747/1 "2022-12-04T12:01:38Z")

</div>

Dear Uqlab :  
Distinguished professors, students have many questions when using UQLab. If you can answer them in time, students will be grateful.  
When I call uqlab with isight, the call window displays cross validation errors during program execution, but the error message displays that Copula cannot be recognized, resulting in no output.  
Error:Action “Commands” execution failed: uq\_copula\_dimension (line 14) uq\_copula\_dimension: missing field Parameters given copula  
INPUT: a0 h1 h2 m z  
output： g1-g8 g11 g88  
code:

```matlab
uqlab;
ModelOpts.mHandle = @optimization_paramater1126;

myModel = uq_createModel(ModelOpts);
InputOpts.Marginals(1).Type = 'Gaussian';
InputOpts.Marginals(1).Moments = [a0,a0/100];
InputOpts.Marginals(2).Type = 'Gaussian';
InputOpts.Marginals(2).Moments = [h1,h1/10];
InputOpts.Marginals(3).Type = 'Gaussian';
InputOpts.Marginals(3).Moments = [h2,h2/10];
InputOpts.Marginals(4).Type = 'Gaussian';
InputOpts.Marginals(4).Moments = [20,6.6667];
InputOpts.Marginals(5).Type = 'Gaussian';
InputOpts.Marginals(5).Moments = [55,31.667];
InputOpts.Marginals(6).Type = 'Constant';
InputOpts.Marginals(6).Parameters = m;
InputOpts.Marginals(7).Type = 'Constant';
InputOpts.Marginals(7).Parameters = z;
myInput1 = uq_createInput(InputOpts);
InputOpts.Copula.Type = 'Independent';
Copula.Parameters = eye(5);
Copula.Dimension = 5;
myInput2 = uq_createInput(InputOpts);
MetaOpts.Type = 'Metamodel';
MetaOpts.MetaType = 'PCE';
MetaOpts.FullModel = myModel;
MetaOpts.Method = 'OLS';
MetaOpts.Degree = 5;
MetaOpts.ExpDesign.NSamples = 700;
MetaOpts.ExpDesign.Sampling = 'LHS';
g1 = myPCE_OLS.PCE(1).Moments.Mean;
g2 = myPCE_OLS.PCE(2).Moments.Mean;
g3 = myPCE_OLS.PCE(3).Moments.Mean;
g4 = myPCE_OLS.PCE(4).Moments.Mean;
g5 = myPCE_OLS.PCE(5).Moments.Mean;
g6 = myPCE_OLS.PCE(6).Moments.Mean;
g7 = myPCE_OLS.PCE(7).Moments.Mean;
g8 = myPCE_OLS.PCE(8).Moments.Mean;
g88 = (myPCE_OLS.PCE(8).Moments.Var)^(1/2);
g = myPCE_OLS.PCE(9).Moments.Mean;
u1 = myPCE_OLS.PCE(1).Moments.Mean;
a = (myPCE_OLS.PCE(1).Moments.Var)^(1/2);
g11 = 1-normcdf(0,u1,a);

```

[demo.zip](https://uqworld.org/uploads/short-url/uVUb35zW1pmnPqBhf6OqLhiVz3R.zip) (21.4 KB)

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<div class="post-metadata">

**Author:** ![leiniu1](https://uqworld.org/letter_avatar_proxy/v4/letter/l/ea666f/32.png) [@leiniu1](https://uqworld.org/u/leiniu1)\
**Post date:** [May 23, 2024, 8:41am UTC](https://uqworld.org/t/error-when-isight-calls-uqlab/1747/2 "2024-05-23T08:41:49Z")

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Hello, I want to know if your problem has been solved, I have the same problem, hope to get your help!

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<div class="post-metadata">

**Author:** ![styfen.schaer](https://uqworld.org/user_avatar/uqworld.org/styfen.schaer/32/849_2.png) [@styfen.schaer](https://uqworld.org/u/styfen.schaer)\
**Post date:** [June 12, 2024, 12:50pm UTC](https://uqworld.org/t/error-when-isight-calls-uqlab/1747/4 "2024-06-12T12:50:44Z")

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Hi @zfzcyt0923

I cannot reproduce your error with the given code. Have you tried to install the latest version of UQLab?

Best regards  
Styfen