marcus_test

MARCUS_TEST
  Show how to save iterative data in files with
  incremented names;
  Show how to retrieve data by reading the files in
  in reverse order.

  The routines we use are:

  FILE_NAME_INC: increments a file name;
  FILE_NAME_DEC: decrements a file name;

  Generate and save the data:

                I      X           Y           Z(1)        Z(2)

  fred001.mat   1    1.000000    1.000000    0.950129    0.231139
  fred002.mat   2    2.000000    4.000000    0.606843    0.485982
  fred003.mat   3    3.000000    9.000000    0.891299    0.762097
  fred004.mat   4    4.000000   16.000000    0.456468    0.018504
  fred005.mat   5    5.000000   25.000000    0.821407    0.444703
  fred006.mat   6    6.000000   36.000000    0.615432    0.791937
  fred007.mat   7    7.000000   49.000000    0.921813    0.738207
  fred008.mat   8    8.000000   64.000000    0.176266    0.405706
  fred009.mat   9    9.000000   81.000000    0.935470    0.916904
  fred010.mat  10   10.000000  100.000000    0.410270    0.893650

  Recover the data in reverse order:

                I      X           Y           Z(1)        Z(2)

  fred010.mat  10   10.000000  100.000000    0.410270    0.893650
  fred009.mat   9    9.000000   81.000000    0.935470    0.916904
  fred008.mat   8    8.000000   64.000000    0.176266    0.405706
  fred007.mat   7    7.000000   49.000000    0.921813    0.738207
  fred006.mat   6    6.000000   36.000000    0.615432    0.791937
  fred005.mat   5    5.000000   25.000000    0.821407    0.444703
  fred004.mat   4    4.000000   16.000000    0.456468    0.018504
  fred003.mat   3    3.000000    9.000000    0.891299    0.762097
  fred002.mat   2    2.000000    4.000000    0.606843    0.485982
  fred001.mat   1    1.000000    1.000000    0.950129    0.231139