Density Change

Summary

Creates a raster output that shows change between two kernel density outputs. For illustrating how kernel density hot spots have changed from one period to another.

Usage

  • Generates an output raster symbolized to show change in density hot spots between the two input rasters.
  • For best results, the Input Current Period Density Raster and Input Previous Period Density Raster should be a raster previously generated by the Kernel Density tool. In the Kernel Density tool, the input point features will generally be created by performing a date and time selection on a larger dataset and saving the selection to a new layer. Also, in the Kernel Density tool the Population field, Output cell size, Search radius, Output cell values, and Method parameter values should be identical for both your Input Current Period Density Raster and Input Previous Period Density Raster.
  • This tool expects that you have a map open in your ArcGIS Pro Project and is meant to be used within the active map context. For density change analysis as part of models or standalone Python scripts it is recommended to use the Minus Tool in the Spatial Analyst toolbox.

Syntax

DensityChange_crime (Input_Current_Period_Density_Raster, Input_Previous_Period_Density_Raster, Output_Raster_Dataset)

Parameter Explanation Data Type
Input Current Period Density Raster Use raster layer output from the Kernel Density tool representing the most current time period as input. Raster Layer
Input Previous Period Density Raster Use raster layer output from the Kernel Density tool representing the time period immediately preceding the current time period as input. Raster Layer
Output Raster Dataset Output density change raster dataset. Raster Dataset

Licensing information

  • ArcGIS Desktop Basic: Requires 3D Analyst Extension or Spatial Analyst
  • ArcGIS Desktop Standard: Requires 3D Analyst Extension or Spatial Analyst
  • ArcGIS Desktop Advanced: Requires 3D Analyst Extension or Spatial Analyst
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