Syntax

   @YValue([(<y-value>|<list attribute>)]) 
   
Arguments

   <y-value>   
   
      The value of the y coordinate stored in the feature.
      
      Range: Real Number   
   
   <list attribute>  
   
      The name of a list attribute that contains coordinates to be stored in the feature.
   
      Range: attribute name containing {} exactly once.  
   
Description

   This function is identical in its operation to the @XValue function, except 
   it operates on the Y coordinate rather than on the X coordinate. It may be 
   used either as a feature function or an attribute value function. When used 
   as a feature function, the optional y-value parameter must be given. In this 
   case, the @YValue function stores the specified value as the Y coordinate of 
   the feature.
   
   If a list attribute is specified in place of a value, then all the values in 
   that list are supplied as coordinates to the feature; each coordinate is 
   supplied in the same way as a single value.
   
   When used as an attribute value function, the y-value parameter is not 
   specified. In this case, @YValue returns the value of the first y coordinate 
   of the feature. This value is then stored in the attribute.
   
      Warning: @YValue() should generally be used in conjunction with @XValue(). 
      If @YValue() is used on its own, it is possible to create a feature with a 
      different number of X and Y values.