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schur complement error

DO you know what cause this and how to fix it ?

In my log output :

Error : Schur complement contains 4174 negative values on the diagonal

Warning : invertcovarianceschur failed

thank you

 

Hello Benoit,

The error concerning the Schur function has to do with the computation of the uncertainties for the quality report and it does not affect the quality of the reconstruction. It is only used in the quality report to draw the uncertainty ellipses. Therefore, in these projects the uncertainty ellipses will not be included in the Quality Report.

As such, the fact that this particular computation failed does not influence the project (outside of the quality report).
We are working on improving the algorithm to remove this error which could be misleading for our users. 

Regards,

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