ALSCAL_DATA_CONVERT
Write a data file for ALSCAL

ALSCAL_DATA_CONVERT is an executable FORTRAN90 program, using double precision arithmetic, which takes a simple file format of object names and distances, and writes out a data file suitable for use with ALSCAL. The object names are dropped, and suitable values for the many options are included in the new file.

Related Data and Programs:

ALSCAL is a program for handling the multidimensional scaling problem.

Source Code:

• alscal_data_convert.f90, the source code;
• alscal_data_convert.csh, commands to compile and load the source code;

Examples and Tests:

• input_data.txt, the input data file;
• alscal_data.txt, the converted ALSCAL data file;
• alscal_data_convert_output.txt, the output file.

List of Routines:

• MAIN is the main program for ALSCAL_DATA_CONVERT.
• 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.
• GET_UNIT returns a free FORTRAN unit number.
• I4_EXTRACT "extracts" an I4 from the beginning of a string.
• INPUT_PRINT prints the input data.
• INPUT_READ reads the distance data from a file.
• OUTPUT_WRITE writes the distance data to a file in ALSCAL format.
• R8_EXTRACT "extracts" an R8 from the beginning of a string.
• S_SHIFT_LEFT shifts the characters in a string to the left and blank pads.
• S_TO_I4 reads an integer value from a string.
• S_TO_R8 reads an R8 value from a string.
• S_WORD_EXTRACT_FIRST extracts the first word from a string.
• TIMESTAMP prints the current YMDHMS date as a time stamp.

You can go up one level to the FORTRAN90 source codes.