Geographic Information Systems - Querying and Analysis

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What is the fundamental principle of Overlay Analysis?

Compare the properties of the same location in both data layers. (correct)
Compare the properties of different locations in same data layer.
Merge two or more data layers into one layer.
Split one data layer into two or more layers.

What is a prerequisite for performing Overlay Analysis?

Data layers should have different properties.
Data layers should have different areas of interest.
Data layers should be in different coordinate systems.
Data layers should be in the same coordinate system. (correct)

Which of the following is NOT a type of Overlay Analysis?

Vector Overlay
Point Overlay (correct)
Raster Overlay
Polygon Overlay

What is the outcome of performing Overlay Analysis?

A new spatial data layer is created. (B) Signup and view all the answers

What is a common application of Overlay Analysis?

All of the above (D) Signup and view all the answers

What is the purpose of the Point-in-Polygon Overlay?

To find the polygon in which a point falls within (D) Signup and view all the answers

What is the benefit of using Overlay Analysis?

It helps in identifying relationships between different data layers. (A) Signup and view all the answers

Which type of overlay analysis is used to find a line or lines that fall within a certain polygon?

Line-in-Polygon Overlay (D) Signup and view all the answers

What is the output of the Union Overlay operation?

Polygons from both input layers (D) Signup and view all the answers

What is the purpose of the Clip/Cookie-cutting Overlay operation?

To cut out the portion of a polygon layer that falls within another polygon (A) Signup and view all the answers

What is the output of the Intersect Overlay operation?

The polygon of intersection of two polygon layers (C) Signup and view all the answers

What is the name of the analysis that uses overlay operations to evaluate the suitability of different locations?

Suitability Analysis from Overlay (A) Signup and view all the answers

What is the primary purpose of querying in a Geographic Information System?

To retrieve specific data from a database or analysis (D) Signup and view all the answers

Which type of query is used to identify features that satisfy both spatial and aspatial criteria?

Combination query (C) Signup and view all the answers

What is the result of using the XOR operator in a query?

All map units that have either one attribute OR another attribute but not both attributes together (C) Signup and view all the answers

What is the purpose of buffering in proximity analysis?

To create a zone of interest around an entity (A) Signup and view all the answers

What is the name of the method used to identify a target's zone of influence?

Thiessen Polygons (D) Signup and view all the answers

What is the result of using the NOT operator in a query?

All map units that have one attribute but not another (B) Signup and view all the answers