Geographic information systems provide a high level of functionality for spatial analyses but are not yet able to provide extended functionality needed to create a truly "scientific GIS". Functionality that is lacking include time series analyses, calculation of the volume of the overlap between two volumes or calculation of the intersection of a vector path with a volume. Other functions inclu...

Using ArcGIS Topology Rules for Improving Data Maintenance for Navy PWCs Track: Defense and Intelligence Author(s): Dale Dunham The Public Works Centers in Navy Regions Japan and Hawaii had converted their GIS data maintenance process to the SDE Geodatabase environment realizing significant efficiencies. With the release of Topology rule-based editing in ArcGIS 8.3, significant process improvem...

Many decision tasks in disaster management are concerned with spatial patterns and spatial decision problems often require that a large number of feasible alternatives be evaluated based on multiple criteria. Although Geographical Information Systems (GIS) provide extensive spatial analysis and data visualization power to users, such systems offer a limited capacity for tackling complex spatial...

Las cuencas hidrográficas son muy importantes porque facilitan la recolección de los recursos hídricos agua dulce y se considera un elemento esencial dentro del ciclo vida. El presente trabajo realizó con finalidad determinar las características cuenca Pallasca, Ancash, Perú. La metodología es tipo básica, descriptiva. población muestra toda el área en estudio. Los principales resultados muestr...

Goals: to describe the STARS ArcGIS geoprocessing toolset, which is used to calculate the spatial information needed to fit spatial statistical models to stream network data using the SSN package. The STARS toolset is designed for use with a Landscape Network (LSN), which is a topological data model produced by the FLoWS ArcGIS geoprocessing toolset. An overview of the FLoWS LSN structure and a...

Four spatial estimation techniques available in commercial computational packages are evaluated and compared, namely: regularized splines interpolation, tension splines interpolation, inverse distance weighted interpolation, and ordinary Kriging estimation, in order to establish the best representation for the shallow stratigraphic configuration in the city of Aguascalientes, in Central Mexico....

With the arrival of GPS, satellite remote sensing, and personal computers, the last two decades have witnessed rapid advances in the field of spatially-explicit marine ecological modeling. But with this innovation has come complexity. To keep up, ecologists must master multiple specialized software packages, such as ArcGIS for display and manipulation of geospatial data, R for statistical analy...

The study of geographical systems as graphs, and networks has gained significant momentum in the academic literature as these systems possess measurable and relevant network properties. Crowd-based sources of data such as OpenStreetMaps (OSM) have created a wealth of worldwide geographic information including on transportation systems (e.g., road networks). In this work, we offer a Geographic I...