Wednesday, October 31, 2012

Lab 4

 
Example Proposed Airport Expansion

GIS means using hardware, software and data to organizing, managing and analyzing geographic information. It is widely used in many places to solve problems by analyzing data. This lab asked us to analyze a issue about an airport expansion next to a school through a tutorial. We needed to consider many factors about this issue, including noise, population and land use, to decide whether to approve it. 

The software we used this time was called ArcMap, which is a main component of ArcGIS. First we needed to make a map about the area around the airport and found the connection about the airport and the school. Then we were asked to create a land use map and a table about population density. Finally we needed to work with map elements and organize those maps and table in right places. I really learned how to create a sophisticated map and manage geographic data through this lab. 

GIS is so popular because it has many merits. First of all, people can work more efficiently with the help of GIS so that problems can be solved much easier. Take this lab as an example, we can decide whether it is good to expand airport by analyzing the given data. Besides, it is easier to estimate the future by GIS since we have many data records like land use and population density. 

Nevertheless, GIS also has some pitfalls. Through this tutorial, I found the GIS software like ArcMap needs much  knowledge about using computer and I cannot complete this lab without the tutorial. As a result, this kind of software is too professional for many people to access. Maybe some easier programs like Google Map are more suitable to public.  Moreover, it is too complicated to collect GIS data and analyze them, so it costs much time to do that work. For me, I spent nearly 7 hours on this lab, which was the longest so far. 

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