5. Notes for use#

The functions associated with the interspectral matrix are accessible to the user using the RECU_FONCTION [U4.32.03] command using the INTE_SPEC keyword.

5.1. File syntax#

The information read on the file is composed of three parts:

  • a mandatory chapter head keyword: INTERSPECTRE.

  • the keyword DIM, matrix dimension.

  • “n” subfiles defining “n” complex functions. Each subfile starts with the FONCTION_C keyword and ends with FINSF.

  • The file must end with FIN.

5.2. Descriptor#

5.2.1. Keyword describing the characteristics of the matrix#

♦ DIM = sun

Integer allows you to define the dimension of the matrix.

Note:

The “=” sign is mandatory.

5.2.2. Keyword describing a function_C#

Prior note:

“n”, the number of functions to be defined is equal to:

n = (dim (dim+1)) /2, since the matrix under consideration is* “ HERMITIENNE “ .

The n functions are defined by their indices I and J in the matrix. Only the upper triangular part of the matrix is defined, (indices (1,1); (1,2); (2,2); (1,3); (1,3);… (n, n)).

♦ FONCTION_C

♦ I = integer subscript row of the function in the matrix.

♦ J = integer subscript column of the function in the matrix.

♦ NB_POIN = integer number of points in FONCTION

♦ VALEUR = 3* NB_POINréels must be present. The values are read line by line.

On each line are defined in the following order:

  • the value of the parameter, the real part of the result, the imaginary part of the result (FORMAT = “REEL_IMAG”),

or

  • the value of the parameter, the module of the result, the phase of the result (FORMAT =” MODULE_PHASE “)

Note:

For the format MODULE_PHASE , the phase is given in degrees.