Tuesday, August 19, 2008

Types of analysis in GIS

Different types of analysis that can be done:

There are two types of GIS queries,
attribute and location queries.
Attribute queries, also called aspatial queries, find features
based on their attributes
Location queries, also called spatial queries, find features
based on where they are.

A third type of GIS analysis is finding what is near a
feature. One way to find what is near a feature is by
creating a buffer around the feature.

A fourth type of GIS analysis is overlaying different layers
of features.

There are several different spatial overlay and spatial
manipulation operations that you can use on layers
including union, intersect, merge, dissolve, and clip.

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