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Message:

> Dear Micha,
> 
> I hope you are doing well.
> 
> First of all, I would like to thank you for the excellent software you have developed. JAG3D has been a great help to me in my research, and I really appreciate the work and effort that you have put into developing it.
> 
> I am currently working with JAG3D 2026 and I would like to obtain the actual matrices used internally during the least-squares adjustment.
> 
> Specifically, I am looking for the design/Jacobian matrix 𝐴,the weight matrix 𝑃 and, if possible, the normal equation matrix 𝑁.
> 
> I am not looking for the posterior variance-covariance matrix of the adjusted parameters. I need the actual 𝐴 and 𝑃 matrices used during the adjustment, with the same row and column ordering as used internally by JAG3D.
> 
> Is there a way to export these matrices from JAG3D 2026, or are they stored somewhere in the HSQLDB project database?
> 
> If they are not stored in the database, could you please point me to the Java class or method in the source code where these matrices are formed? I would like to extract them for further analysis as part of my research.
> 
> Thank you very much for your time and for developing JAG3D.
> 
> Best regards,
> 
> Nemanja

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