Syntax

   @Interpolate(<startValue>,<endValue>) 
   
Arguments

   <startValue>   
   
      The elevation value for the first vertex of the input feature.

      Range: Number  
      
   <endValue>  
   
      The elevation value for the last vertex of the input feature.

      Range: Number  
      
Description

   This function interpolates elevation values along the length of a two-
   dimensional non-aggregated linear feature from a starting value to an ending 
   value. Each vertex in the original input 2D line has an elevation value added 
   to it. The elevation value is calculated so that the elevation is 
   monotonically increasing or decreasing along the run of the line, in other 
   words, the elevation is distributed between all the vertices so that the 
   feature has a constant slope.

      Note: This function can also be used to distribute measure values across a 
      feature for those destination systems which can retrieve measure data from 
      the elevation (for example, the FME's Shapefile writer can do this).