jburkardt

LATINIZE\ Force a Dataset to be a Latin Hypercube {#latinize-force-a-dataset-to-be-a-latin-hypercube align=”center”} =======================================

LATINIZE is a C++ library which adjusts an M dimensional dataset of N points so that it forms a Latin hypercube.

On output, each row of the table will have the properties that:

the minimum and maximum row values are the same as on input;
the row contains N evenly spaced values between the minimum and maximum.
in each row, the elements retain their ordering.

Licensing: {#licensing align=”center”}

The computer code and data files described and made available on this web page are distributed under the GNU LGPL license.

Languages {#languages align=”center”}

LATINIZE is available in a C version and a C++ version and a FORTRAN77 version and a FORTRAN90 version and a MATLAB version.

BOX_BEHNKEN, a C++ library which computes a Box-Behnken design, that is, a set of arguments to sample the behavior of a function of multiple parameters;

LATIN_CENTER, a C++ library which computes Latin Square datasets by choosing the center of each square.

LATIN_EDGE, a C++ library which computes Latin Square datasets by choosing the edge of each square.

LATIN_RANDOM, a C++ library which computes Latin Square datasets by choosing a random point of each square.

TABLE, a data format which is used to store the input and output files used by the program.

TABLE_LATINIZE, a C++ program which allows the name of the data file to be specified on the command line.

Reference: {#reference align=”center”}

M D McKay, W J Conover, R J Beckman,\ A Comparison of Three Methods for Selecting Values of Input Variables in the Analysis of Output From a Computer Code,\ Technometrics,\ Volume 21, pages 239-245, 1979.
Yuki Saka, Max Gunzburger, John Burkardt,\ Latinized, Improved LHS, and CVT Point Sets in Hypercubes,\ International Journal of Numerical Analysis and Modeling,\ Volume 4, Number 3-4, 2007, pages 729-743,

Source Code: {#source-code align=”center”}

latinize.cpp, the source code.
latinize.hpp, the include file.

Examples: {#examples align=”center”}

latinize_prb.cpp, the test code.
latinize_prb_output.txt, the output file.

CVT_02_00010 is a set of 10 CVT points in 2D:

cvt_02_00010.txt, the original set of 10 points in 2D.
cvt_02_00010.png, a PNG image of the points.
cvt_02_00010.latin.txt, the latinized version of the dataset.
cvt_02_00010.latin.png, a PNG image of the latinized points.

CVT_03_00007 is a set of 7 CVT points in 3D:

cvt_03_00007.txt, 7 points in 3D.
cvt_03_00007.latin.txt, the latinized version of the dataset.

CVT_03_00056 is a set of 56 CVT points in 3D:

cvt_03_00056.txt, 56 points in 3D.
cvt_03_00056.latin.txt, the latinized version of the dataset.

CVT_07_00100 is a set of 100 CVT points in 7D:

cvt_07_00100.txt, 100 points in 7D.
cvt_07_00100.latin.txt, the latinized version of the dataset.

List of Routines: {#list-of-routines align=”center”}

CH_CAP capitalizes a single character.
CH_EQI is true if two characters are equal, disregarding case.
CH_TO_DIGIT returns the integer value of a base 10 digit.
FILE_COLUMN_COUNT counts the columns in the first line of a file.
FILE_NAME_EXT_SWAP replaces the current “extension” of a file name.
FILE_ROW_COUNT counts the number of row records in a file.
I4_MAX returns the maximum of two I4’s.
I4_MIN returns the minimum of two I4’s.
R8MAT_DATA_READ reads the data from an R8MAT file.
R8MAT_HEADER_READ reads the header from an R8MAT file.
R8MAT_LATINIZE “latinizes” a real table dataset.
R8MAT_PRINT prints an R8MAT.
R8MAT_PRINT_SOME prints some of an R8MAT.
R8MAT_TRANSPOSE_PRINT prints an R8MAT, transposed.
R8MAT_TRANSPOSE_PRINT_SOME prints some of an R8MAT, transposed.
R8MAT_WRITE writes an R8MAT file.
R8VEC_SORT_HEAP_INDEX_A does an indexed heap ascending sort of an R8VEC.
S_LEN_TRIM returns the length of a string to the last nonblank.
S_TO_R8 reads an R8 from a string.
S_TO_R8VEC reads an R8VEC from a string.
S_WORD_COUNT counts the number of “words” in a string.
TIMESTAMP prints the current YMDHMS date as a time stamp.

You can go up one level to the C++ source codes.

Last revised on 23 January 2012.