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Projection pursuit describes a procedure for searching high dimensional data for \inter-esting" low dimensional projections, via the optimization of a criterion function called the projection pursuit index. By empirically examining the optimization process for several projection pursuit indices we observed dierences in the types of structure that maximized(More)
GGobi is a direct descendent of a data visualization system called XGobi that has been around since the early 1990's. GGobi's new features include multiple plotting windows, a color lookup table manager, and an XML (Extensible Markup Language) file format for data. Perhaps the biggest advance is that GGobi can be easily extended , either by being embedded(More)
XGobi is a data visualization system with state-of-the-art interactive and dynamic methods for the manipulation of views of data. It implements 2-D displays of projections of points and lines in high-dimensional spaces, as well as parallel coordinate displays and textual views thereof. Projection tools include dotplots of single variables, plots of pairs of(More)
In high-dimensional data, one often seeks a few interesting low-dimensional projections which reveal important aspects of the data. Projection pursuit is a procedure for searching high-dimensional data for interesting low-dimensional projections via the optimization of a criterion function called the projection pursuit index. Very few projection pursuit(More)
This paper describes a link between a Geographical Information System GIS, ARCCINFO TM , and an interactive dynamic graphics program, XGobi. GISs provide a user with a standard and convenient software for spatial geographical data. In particular, the GIS ARCCINFO i s a combination of two systems: ARC maintains the spatial information of map features and(More)
In Symanzik et al. 1995 and Majure et al. 1995 we h a ve presented a bidirectional link between a Geographic Information System GIS, ArcView, and an interactive dynamic graphics program, XGobi. Since then, the link has been extended to support additional methods of spatial statistics such a s v ariogram cloud plots and spatially lagged scatterplots. While(More)
This paper reports on research into interactive, dynamic statistical graphics (DSG) applied to spatial data maintained within a geographic information system (GIS). We developed a bidirectionai link between ArcView 2.1 TM, a GIS, and XGobi, a DSG program. Multivariate data, collected at geographic locations, is passed from ArcView to XGobi and can be(More)
BarleyBase (BB) (www.barleybase.org) is an online database for plant microarrays with integrated tools for data visualization and statistical analysis. BB houses raw and normalized expression data from the two publicly available Affymetrix genome arrays, Barley1 and Arabidopsis ATH1 with plans to include the new Affymetrix 61K wheat, maize, soybean and rice(More)
How do we know if what we see is really there? When visualizing data, how do we avoid falling into the trap of apophenia where we see patterns in random noise? Traditionally, infovis has been concerned with discovering new relationships, and statistics with preventing spurious relationships from being reported. We pull these opposing poles closer with two(More)