Presentation is loading. Please wait.

Presentation is loading. Please wait.

Geographical Information Systems. Software which can be used in GIS ArcGIS Desktop Map Window Quantum GIS uDig.

Similar presentations


Presentation on theme: "Geographical Information Systems. Software which can be used in GIS ArcGIS Desktop Map Window Quantum GIS uDig."— Presentation transcript:

1 Geographical Information Systems

2 Software which can be used in GIS ArcGIS Desktop Map Window Quantum GIS uDig

3 Introduction ArcGIS Components of ArcGIS : ArcMap, ArcCatalog and, ArcToolbox

4

5

6

7 How data are stored in ArcGIS Coverage Shapefile Geodatabase

8 Coverage Coverage is a topology based vector data format A coverage can be a point coverage, line coverage,or polygon coverage. The coverage model supports three basic topological relationships. Connectivity: Arc connects to each other at nodes. Area definition: An Area is defined by a series of connected arcs. Contiguity: Arcs have directions and left and right polygon.

9 Shapefile Shapefile is a standard nontopological data format. The Shapefile is now very common format used for exchanging spatial information between all kind of systems. The shapefile is made of following files:.shp: The SHP file contains the raw geometrical shape data. Each SHP file can contain items of only one kind of geometry shapes Points, LineStrings, or Polygons..shx: The SHX file maintains the shapefile index..dbf : The DBF file contains nonspatial attributes of each shape.prj : The PRJ file gives details about projection.

10 GeoDatabase A geodatabase is a relational database that store geographic information

11 Lab 1 http://gisserver.civil.iitd.ac.in/gislab/home.htm

12 Where to send your tutorial Email Id: gislabcel747@yahoo.ingislabcel747@yahoo.in


Download ppt "Geographical Information Systems. Software which can be used in GIS ArcGIS Desktop Map Window Quantum GIS uDig."

Similar presentations


Ads by Google