You mean, you're working with a child document only, without opening the master? I'd think this should work...
I use Richard's suggestion of loading the xr package when the cross-reference happens with unrelated documents, i. e., outside a master-child structure. In this case, I have to generate and keep the *.aux file of the documents for the xr package to be able to pick up the labels. On Wednesday, August 17, 2011 12:58:49 PM Ramiro Magno wrote: > Hi > > I've been googling about how to do cross-referencing between two lyx > documents. None of the solutions I've seen so far worked for me. My > attempts consisted of having a master lyx file which includes > (Insert->File->Child document, include type=include) two other lyx files. > Then I try to refer to a label in one file from the other. This works as > long as I'm building the whole document, i.e. the master. If I try to > build only one of them it does not work, I get the double question mark > (??)... The goal is the writing of a paper which has supplementary > material which needs referring. But besides the cross-referencing the two > documents should be pretty much independent (indep. page numbering, > titles, etc..) so I need to build them separately. > > Thanks. > Ramiro -- Rudi Gaelzer Departamento de Física Instituto de Física e Matemática Fundação Universidade Federal de Pelotas Caixa Postal 354 - Campus UFPel 96010-900 Pelotas - RS BRAZIL Phone: +55-53-275-7468 FAX: +55-53-275-7343