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Questions and Answers
What type of data do density maps use to shade surfaces?
Point data
Interactive crime mapping is not a type of mapping, but rather a term referring to simplified geographic information systems available to novice users.
True
What purpose do density maps serve?
Interactive crime mapping allows citizens and police officers to conduct basic crime mapping on __________.
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What is the main purpose of crime mapping?
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Crime mapping allows researchers to explore crime patterns over time and space.
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What does GIS stand for?
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In crime mapping, a __ feature is a discrete location usually depicted on a map by a symbol or label.
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Match the following types of crime mapping with their descriptions:
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Study Notes
Crime Mapping
- Crime mapping is a tool used to manage and control crime in an area by analyzing spatial and temporal data.
- It helps investigators understand crime patterns and trends, allocate resources, and perform geographic profiling of criminals and suspicious locations.
History of Crime Mapping
- Police departments have used maps to determine patrol areas and emergency routes since the availability of maps.
- Manual crime mapping involved placing pins on hand-drawn wall maps until the emergence of computerized crime mapping.
Definition and Function of Crime Mapping
- Crime mapping is the process of using a Geographic Information System (GIS) to conduct spatial analysis of crime problems and other police-related issues.
- It serves three main functions: facilitating visual and statistical analyses of crime, linking unlike data sources, and communicating analysis results.
Relationship to Crime Analysis
- Crime mapping is a sub-discipline of crime analysis.
- It plays a crucial role in tactical, strategic, and administrative crime analysis.
Types of Crime Mapping
- Single-Symbol Mapping: uses uniform symbols to represent features, but has limitations when dealing with overlapping data.
- Buffers: specify areas around features on a map to illustrate relative distances.
- Graduated Mapping: uses different sizes or colors of features to represent particular values of variables.
- Chart Mapping: displays several values within a variable at the same time, using pie or bar charts.
- Density Mapping: uses point data to shade surfaces, showing the concentration of incidents in particular areas.
- Interactive Crime Mapping: simplified GIS applications made available to novice users over the Internet.
Geographic Features
- A GIS translates physical elements into forms that can be displayed, manipulated, and analyzed.
- Four types of features are used to represent objects and locations: point, line, polygon, and image features.
Applications of Crime Mapping
- Crime mapping is used in tactical crime analysis to identify immediate patterns, in strategic crime analysis to analyze long-term trends, and in administrative crime analysis to convey information to the public.
- It helps in resource allocation, crime rate calculation, and geographic profiling of criminals and suspicious locations.
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Description
This module explores the use of computerized crime mapping by police departments to determine patrol areas and emergency routes, as well as to track crime patterns.
