xgvis man page

xgvis - interactive multidimensional scaling using xgobi for display

xgvis [-dims n] [-stepsize x] fname

xgvis is an interactive multidimensional scaling (MDS) program that consists of a control panel to manipulate the parameters of the MDS stress function and an xgobi window for data display. It can be used either for visualization of dissimilarity data, for dimension reduction, or for graph layout. Graph layout is usually done in 2D, but xgvis allows layouts in arbitrary dimensions, 3D being the default. It permits missing values, which can be used to implement multidimensional unfolding.

It is used as follows:


-dims n
Specify n, the dimensionality of the embedding space. By default, its value is 3.

-stepsize x
Specify the initial stepsize; its default value is 0.1.

XGVis uses a set of input files with a common root (which we'll call fname in the man page) and a suffix. First, each set must contain a file with the suffix .edges, .dat or .dist.

Many additional files can be specified. See the xgobi man page for descriptions of fname.col (variable labels), fname.row (case labels), fname.colors (glyph colors), and fname.linecolors (line colors), in particular.

Andreas Buja (andreas@research.att.com)
Deborah Swayne (dfs@research.att.com)

Sample data files are included in the XGVis distribution.

For papers and further pointers, check the following web page: http://www.research.att.com/areas/stat/xgobi/

Probably too numerous to mention, but you do the authors a favor if you report the ones you notice.