Geographic Information Systems

Geographic Information Systems

However, if you wanted to incorporate a gravity model later on, designed for use with a vector data structure, then the present tools used are most likely to be inadequate for the new tasks. This may result in having to add vector data modelling capabilities to the system. In a sense, it is like creating a new system on top of an existing one. So, it is vitally important that GISs are designed so that they can be altered when required. There are always new needs discovered by organisations, therefore the system must have the ability to be modified efficiently and at reasonable cost.

Another significant factor to consider before implementing a system is how well it fits in with the institutional organisation and its personnel. This specifically refers to the skills that are possessed within the organisation relevant for the operation and maintenance of the proposed GIS. This issue is important to review because there must be personnel capable of using the system successfully. In order to do this, relevant training facilities may be required by the organisation. The person who would know most about how to use the customised system and its capabilities has to be the actual designer of the system, which is why the designer carries the major responsibility of initiating the training process. The extensive training is likely to be provided by some other personnel, but they will have to consult the designer first, to establish in which fields' training is required.

Such training processes take time for people to learn and to be able to use the systems. If a system is implemented before the people are trained, there is likely to be a lengthy period of learning, showing an overall

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