NAME    scat_base_label - draw Text label at 1st point of scatter data

AUTHOR: I. Curington, AVS Inc, UK

TYPE:   mapper, C
  
DESCRIPTION:
   If your vector data is 1D n-vector float irregular,
   this module will draw a text label just above the first point,
   showing the data label in the AVSfield header.
   This was used in one application to show the names of wells,
   floating above the well heads.
  
   Input: field 1D irregular float (scatter)
  
   Output: geometry containing 3D positioned label string
  
   Parameters:
       On/Off          - total module control