Current location: Cadcorp SIS Crime AnalySIS Toolkit > Temporal > Aoristic

Aoristic

Aoristic calculates the probability of an incident occurring within a certain time span.

Select Aoristic… to display the Aoristic Analysis dialog:

Overlay – Select the overlay for analysis from the drop-down box.

Schema Columns

Earliest Date/Time Column – Select the EarliestDateCommitted# field from the drop-down list:

   

Latest Date/Time Column – Select the LatestDateCommitted# field from the drop-down list:

   

If the same column value is selected for both the Earliest Date/Time Column and the Latest Date/Time Column the following message is displayed to check that you wish to continue:

Analysis Conditions

Set the radio button for one of the following options:

Between - Enter the dates for Earliest Committed and Latest Committed

or

Between - Enter between hours, disregarding the day

or

At any time on a specific day, plus a Base Probability of All or in the range 0 to 0.8 probability of incident occurring on the chosen day.

The Create Themed Overlay button creates an overlay based on the entries made above, for example:

 


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