Summarize Percent Change (Crime Analysis and Safety)

ArcGIS Pro 3.4 | | Help archive

Summary

Calculates the percent change for features that correspond with point features representing two equal comparison time periods.

Usage

  • The Input Current Period Point Features and Input Previous Period Point Features parameter values can be created by performing date and time selections on a larger dataset and saving the selections to new layers.

  • The following fields will be added to the output:

    • CUR_CNT—The number of points from the Input Current Period Point Features parameter values that are coincident with the Input Features parameter values.
    • PREV_CNT—The number of points from the Input Previous Period Point Features parameter values that are coincident with the Input Features parameter values.
    • DIFF_CNT—The difference between the CUR_CNT and PREV_CNT fields.
    • PERC—The percentage of change between the CUR_CNT and PREV_CNT fields. This is calculated using the formula
      ((C - P) / P) * 100
      where C is the current count and P is the previous count. If the previous count is 0, the percent change value is null. When the percent change value is null, these features are designated as no percentage in output symbology classification.

Parameters

LabelExplanationData Type
Input Features

The coincident features from which comparison time periods will be counted and compared.

Feature Layer
Input Current Period Point Features

The point features filtered to the most recent comparison time period.

For example, you can filter for crimes from the previous 14 days.

Feature Layer
Input Previous Period Point Features

The point features filtered to the time period immediately preceding the current period. This time period must be of equal length to the current period to provide an accurate comparison.

For example, if the current period contains features from January 15 to January 28, the previous period contains features from January 1 to January 14.

Feature Layer
Output Feature Class

The output feature class containing difference counts and percent change calculations for the time period comparison.

Feature Class
Search Radius
(Optional)

The maximum distance from the Input Features parameter value that a point feature will be considered coincident.

This parameter is only active when point or line features are used as the input features.

Linear Unit

Licensing information

  • Basic: Yes
  • Standard: Yes
  • Advanced: Yes

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