Construct a PCE surrogate using a set of user defined experimental data

UQ with UQLab Community Q&A and How To
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For the explicit expression of the PCE surrogate:
myPCE.PCE.Basis.Indices is a sparse matrix. To see the matrix in the usual full form, use
A = full(myPCE.PCE.Basis.Indices).
Every row contains one multi-index, each characterizing a basis function.
myPCE.PCE.Coefficients is the corresponding vector of coefficients. Its i-th entry is the coefficient belonging to the basis function/multi-index in the i-th row of A.

Note that UQLab automatically transforms the input distributions into standard distributions, as described in another post.

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