Geographic Information System by 2mz1O10

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									   Geographic Information System
 A geographic information system (GIS) is a computer-based
 software and hardware system for obtaining, managing and
 analysing spatial data.


• GIS offer powerful tools for adding spatial perspectives to:
   – Planning
   – Research
   – Technology transfer
   – Impact assessment
    Geographic Information System
• But they have major drawbacks for developing
  countries :
    - High costs of software
    - High costs of hardware
    - Needs for specialized training

These constraints to effective use of GIS lead CIRAD to develop
a tool for the spatial analysis and representation of PROMISE crop
modeling results.
This tool will allow the user to display on a map the input data for
the model as well as the outputs from the model.
Geographic Information System

With this tool we can manage spatial data :
       - Display (pan, zoom in, zoom out)
       - Thematic analysis (classification, …)
       - Queries and graphic selections (data extraction)
       - Data exportation
       - Layout and Printing
       - NO scale limits
        Actual GIS-Crop model link
                                                    Crop
        GIS
                            database                model

      Interface                                    Interface



                              User

The link between the GIS tool and the crop model is not yet fully
 implemented. The GIS tool can display map of the input data and
output data from the crop model, but the two softwares are
independent.
                 What’s next ?
GIS layers
(Soils,                                                GIS +
Landuse,                                             Crop model
…)
                                                       Interface
Promise grid

                                                        User

               Thiseach cell of the grid, the GIS tool will extract
                for tool (a single executable program that uses a
                The user will be able manage the results of
  Climate
               standard Microsofta(climate, crop, interface)for the
                the input variables Windows user soil, …)towill
                the simulations in GIS like environment
  database      crop model from the corresponding data layers,
                create thematic maps.
               allow ‘inexperienced’ users to access the data,
                run the model and update the database with the
               run the model and view the results.
                results of the simulation.

								
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