GEOGRAPHIC INFORMATION SYSTEMS DATA
The GIS data on this CD-ROM may be accessed through the gisdata directory.
ARCVIEW SHAPEFILES
ArcView shapefiles are a simple, non-topological format for storing the geometric location and attribute information of geographic features. The shapefile format defines the geometry and attributes of geographically-referenced features in as many as five files with specific file extensions that should be stored in the same project workspace.
shapefile content (metadata)
OR
go directly to the files./gisdata/coverage/ (referenced in Geographic Coordinates)

ARC/INFO COVERAGES
ARC/INFO coverages are a topological data structure for geographic features. The coverage format is suitable for spatial analysis and large geographic data management applications. Defining spatial features topologically in a coverage can optimize data storage by reducing coordinate redundancy. (read more about ARC/INFO coverages...)
OR
go directly to the files below
Coverages projected into UTM Zone 19; WGS84 reference ellipsoid
Coverages projected into UTM Zone 20; WGS84 reference ellipsoid
Mayaguez data (UTM Zone 19; WGS84 reference ellipsoid)
Luquillo data (UTM Zone 20; WGS84 reference ellipsoid)

ARC/INFO INTERCHANGE FILES (*.e00)
An interchange file contains all coverage information and appropriate INFO file information in a fixed-length, ASCII format. It can be fully or partially compressed and uncompressed ASCII depending upon the EXPORT option used.(read more about these e00s...)
OR
go to the files
Lineament and Lithologic Data (in Geographic Coordinates)
Luquillo data; (UTM Zone 20; WGS84 reference ellipsoid)
Mayaguez data (UTM Zone 19; WGS84 reference ellipsoid)

PROJECT FILES
ArcExplorer saves projects in files with an *.aep extension. The map display properties, map extent, view properties, any classification or labels, and any scale factors you may have set are saved. An ArcView project file (*.apr) doesn't contain the actual data that you use in ArcView, such as spatial data like shapefiles and ARC/INFO coverages, and tabular data like dBASE files. Instead, a project stores references to the location of these data sources on disk. In this way, the same data can be used in any number of projects without duplication.
ArcExplorer Project Files
ArcExplorer Installation
ArcView 3.0a Project File

DIGITAL ELEVATION MODELS
A digital elevation model (DEM) consists of a group of elevations for ground positions; usually at regularly spaced intervals. Elevations are in meters relative to mean sea level. (read more about these DEMs...)
OR
go to the files
DEMs projected into UTM Zone 19; WGS84 reference ellipsoid.(for use with Mayaguez data)
DEMs projected into UTM Zone 20; WGS84 reference ellipsoid. (for use with Luquillo data)
DEMs in Geographic Coordinates

TIFFS AND WORLD FILES
The world files (*.tfw) contain real-world transformation information used by images in separate ASCII files. (read more about world files)
OR
go directly to the files Mayaguez (UTM Zone 19; WGS84 reference ellipsoid)

 

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SLOPE FAILURE | ARCEXPLORER | ARCVIEW | FIGURES | CONTENTS

 

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