08-Oct-2025 11:13:05

nearest_neighbor_test():
  MATLAB/Octave version 6.4.0
  Test nearest_neighbor().

test01():
  A basic nearest neighbor search.
  P: candidate points:
   0.9065   0.5636   0.1160   0.6211   0.9918
   0.3258   0.8202   0.4664   0.9747   0.7309
  X(I): Nearest neighbors
   0.916559   0.553525   0.090363   0.562509   0.957206
   0.313766   0.853204   0.471281   0.865128   0.761137
  Graphics saved as "test01.png"

test02():
  Find nearest neighbors from a subset of full list.

  Nearest X to X[2,4,10].
I =

   19   10    4

  Nearest X to any X.
I =

 Columns 1 through 16:

    8   19    9   10    4   12   18   20    5    4   15   14    8   15   11   15

 Columns 17 through 20:

    1    7    2    8


test03():
  Find four nearest neighbors.

  Index of four nearest neighbors to 3 points
I =

    2   19   16
   18   45   33
   26   42   28
   40    6   48

  Graphics saved as "test03.png"

test04():
  Find all neighbors within a specific radius.
I =

    0   16   16
    0   10   10
    0   47   47
    0   40   33