11 December  2023  11:21:02.421 AM      

triangulation_svg():
  Fortran77 version
  Make an SVG plot of triangulated data.

  This program expects two files:

  * prefix_nodes.txt, node coordinates,
  * prefix_elements.txt, indices of nodes forming elements,

  It creates:

  * prefix.svg, an SVG image of the triangulation.
 
  Read the header of "lake_nodes.txt".
 
  Spatial dimension DIM_NUM =        2
  Number of nodes NODE_NUM  =      621
 
  Read the header of "lake_elements.txt".
 
  Element order ELEMENT_ORDER     =        3
  Number of elements ELEMENT_NUM  =      973
 
  Read the data in "lake_nodes.txt".
 
  First 5 nodes:
 
       Row       1             2      
       Col
         1   316.430       404.476    
         2   291.049       400.709    
         3   265.165       409.779    
         4   241.468       402.403    
         5   216.551       396.521    
 
  Read the data in "lake_elements.txt".
 
  First 5 elements:
 
  Row        1       2       3
  Col
 
    1:     619     618      39
    2:     620     619      39
    3:     125     126       7
    4:     125     132     126
    5:     143     135     150

  Graphics data written to file "lake.svg"

TRIANGULATION_SVG:
  Normal end of execution.

11 December  2023  11:21:02.438 AM