Exploring Patterns of Crime In Los Angeles County Using A Density Surface Model

Table of Contents

  1. Exploring Patterns of Crime In Los Angeles County Using A Density Surface Model
  2. Setting up Your Workspace
  3. Preparing the Data
  4. Skill Drill: Clipping the LA City Boundaries to the Census LA County Boundary
  5. Skill Drill: Adding XY Data
  6. Skill Drill: Clipping the Crime Data to the Census LA County Boundary
  7. Skill Drill: Creating a Subset of the Data Based on Crime Category
  8. Changing Global Environment Settings for Raster Processing
  9. Creating a Density Surface Model Using the Simple Method
  10. Creating a Density Surface Model Using the Kernel Method
  11. Skill Drill: Creating A Density Surface Model Based on Your Criteria

Skill Drill: Clipping the Crime Data to the Census LA County Boundary

You may notice that some of the crime data points fall outside of the LA County boundary. There are also some crime records with no geographic coordinates. To clean up the data, clip the crimes layer and use the Los Angeles County boundary as the clip feature. This clip operation ensures that your density surface model serves your needs while excluding the data points outside of your areas of interest.

An image of the clipped crime data added to ArcMap
The data is clipped to the LA County boundary to remove any outliers or data without a geographic reference.