Hello Amir,

when we run the parameter file in thorn IDBrillData as it is, without any change we get a number of XG files which are viewed by using xgraph. What these visualization results depicts? Early response will be highly appreciated

You mean arrangements/EinsteinInitialData/IDBrillData/par/brilldata.par ?

The output produced is

IOASCII::out1D_vars = "ADMBase::gxx ADMBase::gyy ADMBase::gzz ADMBase::gxy ADMBase::gxz ADMBase::gyz idbrilldata::brillpsi"

so basically the xx, yy, zz, xy, xz, yz components of the 3-metric as well as a quantity called brillpsi which I would assume to be a conformal factor set up by the initial data routine.

To understand what they mean you would need to look up what the parameter q_function = "gundlach" implies by reading the documention in tex/documentation.tex (just run it through pdflatex). Eg section 2 in there should give information.

Yours, Roland