A WEB GUIDE TO GIS SOFTWARE

	Software is the heart of GIS.  The software allows for almost all 
of the manipultaion in a GIS. The software allows for data storage, 
manipulation, and analysis.
	The Vector based models repersent the actual world characteristics.
It uses an (x,y) coordinate system to give you map like features and qualities.
Points, lines and polygons make up the vector based model.  An example of a 
line may be a road while a polygon make repersent a certain type of wetland.
	The Raster based model is divided up into cells.  You do not have 
(x,y) coordinates, so map like features are not present.  The cells have values
which repersent the condition in that area.  Example: A road in vector looks 
like a line, but in raster it would take up the whole cell and give a 
repersentation a the condition of the road.

Type of Format Desired:

Raster
Topological Vector
Nontopological Vector
Topological Vector with Raster
Other Links


Raster


GRASS
Company: US Army Corps of Engineers
Cost: free to $1,000s
Operating system: UNIX
Platforms: PC, MAC, workstations
Format: Raster
Analysis: Buffer, Map Algebra, Surface, Network, Polygon, Image Processing 

IDRISI
Company: Clark University
Cost: $100s
Operating System: DOS
Platforms: PC
Analysis: Buffer, Map Algebra, Surface, Polygon, Image Processing 

MacGIS
Company: University of Oregon
Cost: $100s
Operating System: Mac
Platforms: Mac
Format: Raster
Analysis: Buffer, Map Algebra, Surface, Network 

Mapbox

Company: Decision Images, Inc.
Cost: $100s
Operating System: UNIX, DOS
Platforms: PC, workstation
Format: Raster
Analysis: Buffer, Map Algebra, Surface, Network 

MAP II

Company: John Wiley and Sons
Cost: $10-100s
Operating System: Mac
Platforms: Mac
Format: Raster
Analysis: Buffer, Map Algebra, Surface, Network, Polygon, Image Processing

Microimage

Company: Terra-Mar Resource Information
Cost: $1,000s
Operating System: DOS
Platforms: PC
Format: Raster
Analysis: Buffer, Map Algebra, Surface, Polygon, Image Processing

MIPS

Company: Microimages, Inc.
Cost: $1,000s
Operating System: DOS
Platforms: PC
Format: Raster
Analysis: Buffer, Map Algebra, Surface, Network, Polygon, Image Processing

PMAP

Company: Spatial Information Systems
Cost: $100s
Operating System: DOS
Platforms: PC
Format: Raster
Analysis: Buffer, Map Algebra, Surface, Network, Polygon 

SPANS
Company: TYDAC Technologies Corp.
Cost: $1,000s
Operating System: UNIX, OS/2
Platforms: PC, workstations
Format: Raster/Quadtree
Analysis: Buffer, Map Algebra, Surface, Network, Polygon, Image Processing

Terrasoft

Company: Digital Resource Systems, Ltd.
Cost: $10,000s
Operating System: UNIX, DOS
Platforms: PC, workstation
Format: Raster
Analysis: Buffer, Map Algebra, Surface, Polygon


Topological Vector


GENAMAP

Company: Genasys II, Inc.
Cost: na
Operating System: UNIX
Platforms: PC, workstations
Format: Topological Vector
Analysis: Buffer, Map Algebra, Surface, Network, Polygon

GEO/SQL

Company: Generation 5 Technology, Ltd.
Cost: $10,000+
Operating System: UNIX, DOS
Platforms: PC, workstation
Format: Topological Vector
Analysis: Buffer, Map Algebra, Surface, Network 

GIS PLUS
Company: Caliper Corp.
Cost: $1,000s
Operating System: DOS
Platforms: PC
Format: Topological Vector
Analysis: Buffer, Network, Polygon

Graphics Design System (GDS)

Company: McDonnell Douglas
Cost: $10,000+
Operating System: VMS
Platforms: workstation
Format: Topological Vector
Analysis: Buffer, Map Algebra, Surface, Network, Polygon

INFORMAP

Company: Synercom Technology, Inc.
Cost: na
Operating System: UNIX, VMS
Platforms: PC, Mac, Workstation
Format: Topological Vector
Analysis: Buffer, Map Algebra, Surface, Network, Polygon

System 9
Company: Computervision
Cost: $10,000s
Operating System: UNIX
Platforms: workstation
Format: Topological Vector
Analysis: Buffer, Map Algebra, Surface, Network, Polygon

VISION GIS
Company: GeoVision Systems Inc.
Cost: na
Operating System: UNIX, VMS
Platforms: workstation
Format: Topological Vector
Analysis: Buffer, Map Algebra, Surface, Network, Polygon


Nontopological Vector


Atlas GIS
Company: Strategic Mapping, Inc.
Cost: $100s
Operating System: DOS
Platforms: PC
Format: Nontopological Vector
Analysis: Buffer, Map Algebra, Polygon

MapInfo
Company: MapInfo Corp.
Cost: $100-1,000s
Operating System: UNIX, DOS, Mac
Platforms: PC, Mac, workstation
Format: Nontopological Vector
Analysis: Buffer, Map Algebra, Polygon


Topological Vector with Raster


ARC/INFO
Company: Environmental Systems Research Institute
Cost: $1,000-10,000s
Operating System: UNIX, DOS
Platforms: PC, workstation
Format: Topological Vector with Raster
Analysis: Buffer, Map Algebra, Surface, Network, Polygon, Image Processing

Modular GIS Environment
Company: Intergraph, Inc.
Cost: $1,000s
Operating System: UNIX, DOS
Platforms: PC, workstation
Format: Topological Vector with Raster
Analysis: Buffer, Map Algebra, Surface, Network, Polygon, Image Processing


Other Links


Resources for Cartography , GIS, and Remote Sensing
USGS Homepage
USGS Geospatial Data Clearinghouse
EPA-National GIS Program
TIGER-US CENSUS MAPPING FILES
GIS WORLD- magazine for GIS
Yahoo GIS Information
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by:Michael Wierzbowski