Element syntax

By default, the element name is the same as the element type. For example, by default, a Standard Error element is called stderr. However, if you create multiple elements of the same type, you must specify names to ensure that each element is uniquely identified.

Description	Syntax
Base	base(['Expression Text'])
Unweighted base	unweightedbase(['Expression Text'])
Mean	mean([NumericVariable], ['Expression Text'])
Standard deviation	stddev([NumericVariable], ['Expression Text'])
Standard error	stderr([ NumericVariable ], ['Expression Text'])
Sample variance	sampvar([NumericVariable], ['Expression Text'])
Total	total()
Subtotal	subtotal()
Text (Subheading)	text()
Minimum	min( NumericVariable, ['Expression Text'] )
Maximum	max( NumericVariable, ['Expression Text'] )
Net	net({ ElementList })
Combine	combine({ ElementList })
Expression (User-defined category)	expression(' ExpressionText ')
Numeric	numeric( NumericVariable, ['Expression Text'] )
Paired Preference	ppt()
Derived	derived( 'Expression Text' )
Sum	sum( NumericVariable , ['Expression Text'])
Effective base	effectivebase()
Median	median( NumericVariable, ['Expression Text'] )
Percentile	percentile( NumericVariable, CutOffValue, ['Expression Text'])
Mode	mode( NumericVariable, ['Expression Text'] )
Net Difference	ntd()

NumericVariable (AnalysisVariable), Multiplier, and Weight properties need to be specified as absolute references. However, variable references in expressions need to be specified as relative references. Using the Household.mdd sample as an example, when editing a categorical variable at the person level, if you want to display the mean of man’s weight, you can add the following mean element: mean(person[..].weight, 'gender.ContainsAny({Male})')

When you create a net, if the name of the net is the same as that of any of the categories in the net, a net expression will be generated on the category, which will slow performance. Because of this, it is recommended that you do not use the same name for a net as for any of the categories in the net (though you can use the same description). For example, instead of: