The following items should be taken into consideration for installation of GIS
a) Cost
The cost of GIS is very important with regard to the installation cost and operational cost as enumerated.
Installation Cost
Cost of hardware and software with respect to the requirements
Cost of Data Input
Cost of Database Management
Training Cost
Cost of Application Software
Version Up of Hardware and Software
Other Necessary Facilities and Equipments
Operation Cost
Maintenance of Hardware
Cost for updating of Database
Cost for Data Analysis
Cost for Data Output
Cost for Archiving System/Back Up System
b) Functions of GIS
Data Input
Selection of Geospatial Data
Data Model and Strucutre
Digitizing Methods and Tools
Error Check and Correction
Database Management system
Data Processing
Map Projection/Map Production
Map Mozaicing
Topological Structure
Raster-Vector, Vector-Raster Conversion
Spatial Analysis
Overlay
Query of Spatial Data and the Attributes
Measurement of spatial Data
DEM
Network Analysis
c) Support by Vendor
Maintenance of Hardware and Software
After Services
New Products
Service Persons
d) Support for Users
Training
Provision of Metadata
On Line Help Service
Data Access/Exchange
Application Package
Figure 6.2 summariezes the considerations for installation of GIS.