A Bit About Data
Before we think about how we represent data in a GIS specifically, we need to take a step back and think about what data is?
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Data is information describing some phenomenon.
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The type of phenomenon being represented will often influence how we represent it.
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There are different types of data too. Some is numeric, some is purely descriptive. Different types of data have different rules we must consider when working with them.
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Spatial data is special! There are unique considerations we need to make.