F90_MATLAB
FORTRAN90 Programs Interacting with MATLAB

F90_MATLAB contains examples of how a FORTRAN90 program can interact with MATLAB.

In these examples, the interaction is done through the SYSTEM command, which allows a FORTRAN90 program to issue a command to the operating system, and to receive a result flag indicating the successful completion or failure of that command.

The SYSTEM command is not a standard or intrinsic routine defined by the FORTRAN standard. However, it is often available to FORTRAN programmers on UNIX systems. In particular, the GNU G95 and IBM XLF compilers include this routine.

Data can be passed between MATLAB and FORTRAN using text files.

Related Data and Programs:

F90 is a directory which includes some examples on features of the FORTRAN90 language.

G95_INTRINSICS is a directory which includes some examples of the use of intrinsic functions included with the G95 compiler.

MATLAB shows some examples of MATLAB script files and M-files.

MATLAB_BATCH shows some examples of using MATLAB in batch mode.

MATLAB_F77 shows some examples of MATLAB calling FORTRAN77 subroutines or functions.

XLF_INTRINSICS is a directory which includes some examples of the use of intrinsic functions peculiar to the IBM XLF FORTRAN compiler.

Reference:

1. Duane Hanselman, Bruce Littlefield,
   Mastering MATLAB 7,
   Pearson Prentice Hall, 2005,
   ISBN: 0-13-143018-1.
2. The Mathworks,
   Using MATLAB, Version 6,
   The Mathworks, 2002.
3. G95 Manual, ../../pdf/g95_manual.pdf.
4. XLF Manual, ../../pdf/ibm/xlf_language_11.1.pdf.

Examples and Tests:

MATRIX_MULTIPLY shows how a FORTRAN90 program can cooperate with MATLAB. The FORTRAN90 program generates two matrices A and B, write them to files, and invokes MATLAB with a particular M-file. The M-file reads the matrices from the files, computes the product C and writes it to a file. The FORTRAN90 program resumes execution, reading the C file and reporting the result.

• matrix_multiply.f90, a program that generates matrices A and B, writes them to a file, runs MATLAB with the MATRIX_MULTIPLY.M file, and retrieves the product matrix C.
• matrix_multiply.m, a MATLAB script that reads matrices A and B from a file, computes the product C, and writes it to a file.
• r8mat_read.m, a MATLAB M-file that reads a matrix from a file.
• r8mat_write.m, a MATLAB M-file that writes a matrix to a file.
• matrix_multiply_f90_output.txt, the output file from the FORTRAN90 program;
• matrix_multiply_matlab_output.txt, the output file from the MATLAB program;
• a.txt, the A matrix written by the FORTRAN program;
• b.txt, the B matrix written by the FORTRAN program;
• c.txt, the C matrix written by the MATLAB script;

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