08-Jan-2022 10:41:08

triangulation_order3_contour_test():
  MATLAB/Octave version 9.8.0.1380330 (R2020a) Update 2
  Test triangulation_order3_contour().
08-Jan-2022 10:41:08

TRIANGULATION_ORDER3_CONTOUR:
  MATLAB/Octave version 9.8.0.1380330 (R2020a) Update 2

  Plot a scalar U(X,Y) on a triangulated data set.

  This program expects to find three files to read:

  * a node file,      containing the node coordinates,
  * an element file,  containing triples of nodes that form triangles,
                      (optional; if not supplied, the program will
                      create the element information);
  * a value file,     containing solution values.

  It reads the files and makes plots of:

  * the triangulation,
  * a crude contour plot that is constant over each triangle, and
  * a nicer contour plot that uses interpolation.

  Read the header of "lake_nodes.txt".
  Spatial dimension DIM_NUM = 2
  Number of points NODE_NUM = 621

  Read the data in "lake_nodes.txt".

  First 5 nodes:

  Row:       1             2       
  Col
    1   316.430270  404.475590
    2   291.049460  400.709170
    3   265.165040  409.778900
    4   241.467940  402.403100
    5   216.551450  396.520640

  Read the header of "lake_elements.txt".

  Triangle order = 3
  Number of triangles TRIANGLE_NUM  = 973

  Read the data in "lake_elements.txt".

  First 10 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  
    6      143      150      154  
    7      481       69      482  
    8      454       68      464  
    9      460      472      473  
   10      460      450      472  

MESH_BASE_ONE:
  The element indexing appears to be 1-based!
  No conversion is necessary.

  Read the header of "lake_values.txt".
  Spatial dimension = 1
  Number of values  = 621

  Read the data in "lake_values.txt".

  First 5 values:

  Row:       1       
  Col
    1     1.054910
    2     0.981111
    3     0.952925
    4     0.880940
    5     0.816493
  Saved image in file "lake_mesh.png"
  Saved image in file "lake_pwc.png"
  Saved image in file "lake_interp.png"

TRIANGULATION_ORDER3_CONTOUR:
  Normal end of execution.

08-Jan-2022 10:41:30

triangulation_order3_contour_test():
  Normal end of execution.

08-Jan-2022 10:41:30