Issue in s4sid_CCA

[hfj6]

how to deal with the code line 84 'forward weight matrix not positive-definite');Some data do, some data don't.

[nguyen-td]

Hi, would you mind sharing instructions on how to reproduce the error, perhaps with some data if possible?

[hfj6]

This is a simulation program to obtain a dynamic response of the structure under white noise excitation, which often has problems, as follows:
错误使用 assert
forward weight matrix not positive-definite

出错 s4sid_CCA (第 85 行)
assert(cholp == 0, 'forward weight matrix not positive-definite');
There is no such problem in the actual data. What could be the cause?

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