geographic information systems l.
Skip this Video
Loading SlideShow in 5 Seconds..
Geographic Information Systems PowerPoint Presentation
Download Presentation
Geographic Information Systems

Loading in 2 Seconds...

play fullscreen
1 / 17

Geographic Information Systems - PowerPoint PPT Presentation

  • Uploaded on

Geographic Information Systems. GIS Software. 1. The Early GISs. SURFACE II, by Kansas Geological Survey SYMAP, by Harvard Laboratory for Computer Graphics and Spatial Analysis. SURFACE II. Surface III displays of three-dimensional, single-valued surfaces

I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
Download Presentation

PowerPoint Slideshow about 'Geographic Information Systems' - lyre

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.

- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
1 the early giss
1. The Early GISs
  • SURFACE II, by Kansas Geological Survey
  • SYMAP, by Harvard Laboratory for Computer Graphics and Spatial Analysis
surface ii
  • Surface III displays of three-dimensional, single-valued surfaces
  • The input to Surface III is a text file containing X-Y-Z data points. The program will create a matrix of rows and columns describing the surface. The gridding methods include distance-weighted averaging, polynomial fitting, and Universal kriging, Etc.
surface ii4
  • The software can create several kinds of maps

contour maps

three-dimensional fishnet diagrams

color-filled contours

data-point postings

  • Grids can be added, subtracted, multiplied, or divided by one another (grid-to-grid operations)
  • Developed as general-purpose mapping package beginning in 1964
  • Output exclusively on line printers
  • Poor resolution, low quality
  • Limited functionality but simple to use
  • A way for non-cartographers to make maps
  • First real demonstration of ability of computers to make maps
  • Sparked enormous interest in a previously unheard-of technology
2 major gis software packages
2. Major GIS Software Packages
  • ArcGIS, Environmental Systems Research Institute (ESRI)
  • Autodesk MapGuide, Autodesk Inc.
  • GRASS, Open Source Geospatial Foundation (OSGeo)
  • IDRISI, Clark University Graduate School of Geography
  • MapInfo, Pitney Bowes Business Insight
  • Maptitude, Caliper Corporation
  • Geomedia, Intergraph Corporation
arcgis arc info
  • A long lived, full function GIS
  • With hundreds of sophisticated tools for map automation, data conversion, database management, map overlay and spatial analysis, interactive display and query graphic editing, and address geocoding
  • A relational database interface
  • Changed to object-oriented design in version 8+ in the late 1990s
autodesk map
Autodesk Map
  • Built on the capabilities of AutoCAD, Autodesk inc.
  • Extensively used in planning, engineering, and architecture
  • Supports topology, Oracle and SQL query, and grids/images
  • Extensive tools for coordinate conversion, map editing and digitizing
  • Allows an open architecture
  • Geographic Resources Analysis Support System
  • The first Unix based GIS, using raster data
  • It is a free software with an open architecture
  • Started by the U.S. Army - Construction Engineering Research Laboratory (USA-CERL), now run by OSGeo foundation
grass 6 0 features
Grass 6.0 Features
  • New Vector Engine (geometry)
  • Volume visualization
  • Vector network analysis

  • A not-for profit operation (School of Geography, Clark University)
  • A raster GIS, with an open architecture
  • Image processing and spatial statistical analysis
  • Time-series analysis, spatial decision support, uncertainty analysis, fuzzy analysis
  • Start out as a less than full-blown GIS
  • Data ready
  • Suited to economic, political, cultural, industrial applications
  • Geomarketing
  • Site location analysis
  • Related to TransCAD, GIS-Plus GIS, Caliper Corp
  • Transportation-oriented GIS package
  • Come with geocoded and system-ready data
  • Allow creation and maintenance of database, analysis of geographic relationship, and map display
  • A layer based GIS
  • With a set of modules for different functions
  • There are additional extensions for land information, parcel management, public works, and transportation
  • Maintains topologically clean data without building topology
  • Use Orical and SQL for attribute data
3 picking up a gis software
3. Picking up a GIS Software
  • Cost
  • Training
  • Manual
  • User support group
  • Software maintenance

That is all well and good, but, but does it come with a remote?

4 readings
4. Readings
  • Keith Clarke, 2003, Getting Started with Geographic Information Systems, 4th edition, Prentice Hall.