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Federal government agencies generate, summarize, and disseminate a large and growing volume of statistical data that can be linked through common geospatial referencing. The potential of this data is often unrealized because agencies and their data users lack usable and useful data analysis tools that support multivariate geospatial data exploration and(More)
We introduce an approach to visual analysis of multivariate data that integrates several methods from information visualization, exploratory data analysis (EDA), and geovisualization. The approach leverages the component-based architecture implemented in GeoVISTA Studio to construct a flexible, multiview, tightly (but generically) coordinated, EDA toolkit.(More)
Federal government agencies generate massive volumes of statistical data. A substantial proportion of these data include geospatial referencing (in the form of geographic coordinates, zip codes, addresses or other location specifications). This “georeferencing” can be the key to integrating data across agencies, because it often provides the only common(More)
This paper describes our efforts to build a system that encompasses the full extents of the classification problem as it applies in geography. We use as our example the specific task of creating an informative land cover map, taking into account both the abstract conceptualization of the landscape and the emergent properties of the dataset used. The system(More)
Categories are essential to human reasoning, yet the tools we have at our disposal to discover, propose, apply and evaluate categories are still primitive. Current GIS often assume, a-priori, that the required categories for a specific exercise have been constructed by some external process. However, within the field sciences, it is often the case that(More)
Federal government agencies have collected large and highly complex federal statistical summaries and geo-reference data. Methods and tools for identifying patterns and uncovering multivariate relationships in the complex datasets have drawn attention in multiple fields. The approach we present here extends from and integrates perspectives from multiple(More)
Categories are the most basic structures by which human beings understand, describe, and communicate phenomena and related information about the world (Lakoff, 1987). Geographers construct categories to conceptualize, define, interpret and communicate geographic phenomena, for instance, land cover, vegetation types, soil types, regions of economic growth,(More)