reading the *.vcv binary file

[markmiller]

I ran a bunch of models with RMark. Each model was run with a separate R file and each R file created four output files: *.inp, *.res, *.vcv and *.out. I did not specify that an R file return the variance-covariance matrix. So, the vcv matrix does not appear in the *.out file.

Unfortunately, I have now been asked for the vcv matrix. Instead of rerunning all of the models I am hoping to find some way to obtain the vcv matrix from the existing RMark output. I have read that the vcv matrix is in the *.vcv file and that the *.vcv file is binary.

Can I extract the vcv matrix from the *.vcv file? Typically I use the vcv matrix of the betas rather than the reals, although I suppose I could use either (for the delta method).

I am aware that MARK can import RMark files, but that does not appear to be an option in my case. I do not have an *.Rinp file presumably because I did not use an export.MARK statement either.

Thank you for any advice on how to extract the vcv matrix from existing RMark output without importing that output into MARK.