TABLE_RECORD_MATCH
Find Close Records in Table

TABLE_RECORD_MATCH is a FORTRAN90 program which searches a table file for the closest pair of records.

The program reads a TABLE file, which is simply an ASCII file with one record per line, each record having the same number of entries, and with optional comments that begin with a "#" character in column 1.

The program reads the table data, and then seeks the pair of records that are closest. The Euclidean norm is used to measure distance.

Usage:

table_record_match file_name

reads the data from file_name and finds the closest pair.

Licensing:

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

Languages:

TABLE_RECORD_MATCH is available in a FORTRAN90 version.

Related Data and Programs:

TABLE_BARPLOT_PPMA, a FORTRAN90 program which reads a table file and creates a PPMA bargraph of the data.

TABLE_BORDER, a FORTRAN90 program which can be used to add a border (of zero values) to a table file.

TABLE_COLUMNS, a FORTRAN90 program which can extract specific columns of data from a table file.

TABLE_COLUMNS_PERMUTE, a FORTRAN90 program which permutes the columns of a table file.

TABLE_DELAUNAY, a FORTRAN90 program which computes the Delaunay triangulation of a set of points.

TABLE_HISTOGRAM, a FORTRAN90 program which can make a histogram of a set of points stored in a table file.

TABLE_IO, a FORTRAN90 library which supplies the routines used to read the TABLE file.

TABLE_LATINIZE, a FORTRAN90 program which reads a file of points and creates a "latinized" version by adjusting the data.

TABLE_MERGE, a FORTRAN90 program which reads a file of points, and removes duplicates, and points that are close to each other.

TABLE_ORTHONORMALIZE, a FORTRAN90 program which reads a file of points and orthonormalizes the columns.

TABLE_QUALITY, a FORTRAN90 program which reads a file of points and computes the quality of dispersion.

TABLE_SCALE, a FORTRAN90 program which can be used to multiply the entries of a table file by a scale vector.

TABLE_SHIFT, a FORTRAN90 program which can be used to shift the entries of a table file by a shift vector.

TABLE_STATS, a FORTRAN90 program which can read a table file and compute certain statistics.

TABLE_TET_MESH, a FORTRAN90 program which can read a table file of 3D data, and compute a tetrahedral mesh.

TABLE_TOP, a FORTRAN90 program which can read a table file of M-dimensional data and make a table of plots of all pairs of coordinates.

TABLE_UNBORDER, a FORTRAN90 program which can be used to remove the border from a table file.

TABLE_UNIFORM_NOISE, a FORTRAN90 program which can be used to add a uniform noise term to the data in a table file.

TABLE_VORONOI, a FORTRAN90 program which can be used to compute information about the Voronoi diagram of the points.

Source Code:

• table_record_match.f90, the source code.
• table_record_match.sh, commands to compile the source code.

Examples and Tests:

• simple_table.txt, a short and simple table.
• simple_table_output.txt, the report from TABLE_RECORD_MATCH.
• big_table.txt, a longer table.
• big_table_output.txt, the report from TABLE_RECORD_MATCH.

List of Routines:

• MAIN is the main program for TABLE_RECORD_MATCH.
• CH_CAP capitalizes a single character.
• CH_EQI is a case insensitive comparison of two characters for equality.
• CH_TO_DIGIT returns the integer value of a base 10 digit.
• DTABLE_DATA_READ reads data from a double precision table file.
• DTABLE_HEADER_READ reads the header from a double precision table file.
• FILE_COLUMN_COUNT counts the number of columns in the first line of a file.
• FILE_ROW_COUNT counts the number of row records in a file.
• GET_INPUT_FILE_NAME gets the input file name.
• GET_UNIT returns a free FORTRAN unit number.
• R8MAT_TRANSPOSE_PRINT prints an R8MAT, transposed.
• R8MAT_TRANSPOSE_PRINT_SOME prints some of an R8MAT, transposed.
• 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 FORTRAN90 source codes.