Geographical Information System

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Geographical Information System (GIS) is a tool for analysis and presentation of spatial data. It is a collection of computer hardware, software and geographic data for capturing, managing, analyzing and displaying all forms of geographically references information.

What is GIS?

Simple definition 
A Geographic Information System organizes large volumes of raw data into a map form for easy comprehension.
GIS divides raw data into layers so it can give you a better understanding for the whole world.

GISdefinition.jpg

Why is GIS unique?

  • GIS handles SPATIAL information
    • Information referenced by its location in space

[Image:Spatialinfo.jpg]]

GIS functions

  • Data input
  • Storage
  • Management
  • Analysis
  • Output

Storing data using Geodatabase

  • Geodatabase is a container for spatial and non- spatial data that can be organized in a certain structure.
  • Advantages:
    • provide a single, consolidated data storage for field measurements and all types of data used.
    • Controlling data entry by applying validation rule on the attributes.

Geodatabase.jpg

CZM and GIS

  • GIS stores all data relevant for the CZM
  • GIS handles data on all spatial scales (North Egypt coast vs. a single harbour)
  • GIS is a powerful analysis tool.
    • Comparison of measurements from different years
    • Overlay analysis of measurements and modelling results

GISCZM.jpg GISCZM2.jpg

Data types

  • DFS2 Data MIKE 21
  • Dfs1 Data MIKE 21
  • XYZ Data
  • Wave time series & Rose
  • Scanned Maps
  • CAD drawing

Additional Data

  • Land use
  • Sediment classification
  • Satellite images
  • Geographical maps
  • Reports (design, licenses, Site investigation)
  • ….etc.