Geographers have been working with geographic information systems (GIS) long bef

Question

Geographers have been working with geographic information systems (GIS) long before there were computers, using overlays and maps, which would seem crude today. Explore the advancement of GIS to its current state by answering the following questions: 1.When were computers first used in GIS? 2.What were the major advances in GIS within the last two decades? 3.What are some of the most common uses for GIS? 4.What are some strengths and weaknesses of particular GIS software? 5.How has the availability of information changed in the last 10 years?

Explanation / Answer

1. 1962: The first GIS system using digital data on a computer was developed in Canada, by Alan Tomlinson, called the Canadian Geographic Information System.

2. The major advances in GIS were due to changing technologies, such as faster computers, larger databases and the internet. also the use of satellites to remotely gather data has advanced GIS.

3. Geographic Information Systems (GIS) can be used to display spatial data and to solve problems that involve spatial factors. GIS is particularly useful for relating, integrating, and analyzing information from these different themes (or layers) of spatial information. Therefore, anything that can be placed on a map is a candidate for GIS, and so the variety of uses are quite extensive.

5. Through internet and digitisation of data, information of large volumes have become easily accessible throught the world for individual users in an very short time.

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