MobileMap uses check cruise rules to generate a check cruise score for cruise plots or stands. Check cruise rules compare values between original cruise plot, tree, or log attributes and the corresponding check cruise plot, tree, or log attributes. Users assign a deduction amount to each rule. If the check cruise rule is violated, the deduction amount is subtracted from the total score. The total score typically starts at 100. Check cruise rules are maintained in the table called Check Rules.
Managing Check Cruise Rules in Inventory Manager
In order to assist with the management of Check Cruise Rules, InventoryManager provides a dedicated interface for creating and editing validation rules. The screenshot below shows this user interface in a typical InventoryManager implementation.
Following the workflow of the user interface above, the process for creating a new check cruise rule is the following:
In InventoryManager:
Give the Check Cruise Rule a name
Type the rule name in the Rule Name text box
Select the layer that the rule should act upon (typically Stands, Plots, Trees, or Logs)
Click on the desired layer in the dropdown list.
Select the Field
Click on the desired field in the Field dropdown list
Select the Operator
Click on the desired operator in the Operator dropdown list
Type the Value, which for numerical fields, is the amount the original and check values can differ by and not accrue a deduction. Check Cruise Rules will compare the absolute difference of values for numerical fields by default. For percent comparisons, use '%' (without the single quotes. For example, to set the value to a 5 percent difference, use '%5' as the input to the Value box. Leave Value empty when using operators "=" or "!=", as this is testing for identical values. For floating point data, use < or > and a small threshold to avoid floating point rounding issues. For Stands and Plots, rules will assess single fields or compare values between two fields of the same type within that feature. For Stands and Plots, use "Null" (without quotes) for no value and use field name in curly brackets for field value (e.g., "{DBH}" - without quotes)
Input the Deduction
Type the amount that should be deducted from the Check Cruise score if the two field differ by the amount in the Value, or if they are different in the case of categorical attributes (non-floating-point attributes) in the Deduction box.