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n = sample size (number of trees)

Custom Stand Summary Calculations

MobileMap limited support for user-defined custom calculations within the Stand Summary. These custom calculations include simple criteria or test on one field (e.g., Species = ‘DF’, DBH > 5.5) and simple aggregations (count, min, max, sum, average) on a the same or different field. Custom calculations are entered in a semicolon separated list in the setting Settings > MobileMap Cruise > Stand and Plot Summaries > Custom Stand Summary Calculations.

Syntax for this setting: 'label,fieldname1,operator,value,fieldname2,aggregator;label,fieldname1,operator,value,fieldname2,aggregator;...'

Where: fieldnames are the data model field names (not aliases). The fields can be any String, Integer (short or long) or Decimal (Single or Double) attribute field in the Trees table. Operators for String fields are '=' and '!=', operators for integer and float are '=', '!=', '<' and '>' (without quotes). When fields use coded value domains, the 'value' should match the code not the description. Aggregators include: 'count', 'min','max', 'sum', 'average' (without quotes).

Examples:

• 'Average DF DBH,Species,=,DF,DBH,average' - will add a line to the Stand Summary that reads 'Average DF DBH: X.X' where X.X will be the average DBH of all DBH trees measured in the stand.

• ‘Planting Errors,Planting_Errors,!=,NA,Tally,sum' - will add a line to the Stand Summary that reads 'Planting Errors: Y' where Y will be the sum of the planting errors in the Stand calculated using the sum of the values in the Tally field. In this example, the trees table has a field called Planting_Errors which has a value of 'NA’ when there are no errors, and has a list of error types when errors are found. The Tally field is used to record the number of trees that the record represents. This field might default to 1, but can be increased if the record represents more than one tree.

Generate Stand Summary

Steps to generate a stand summary for a stand after measuring plots

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