example
=====

In the example below we define a spectral density function (in terms of interspectrum it is a 1 x 1 matrix) with a constant value:


.. image:: images/1000047E00000F81000009187F402935F28D6CFA.svg
    :width: 200
    :height: 117


.. _RefImage_1000047E00000F81000009187F402935F28D6CFA.svg:


.. code-block:: text



    INTEREXC = DEFI_INTE_SPEC (
DIMENSION =1,
INFO =2,
CONSTANT =_F (
NUME_ORDRE_I =1,
NUME_ORDRE_J =1,
FREQ_MIN =0. ,
FREQ_MAX =100. ,
PAS =1. ,
PROL_GAUCHE =' CONSTANT ',
PROL_DROITE =' CONSTANT ',
INTERPOL =' LIN ',
VALE_C =( 'RI',1.,0. ),
),
);

To define the interspectrum of white noise filtered by an oscillator represented by the KANAI - TAJIMI filter:


.. code-block:: text
 INTKTJ1 = DEFI_INTE_SPEC (
DIMENSION =1,
INFO =2,
KANAI_TAJIMI =_F (
NUME_ORDRE_I =1,
NUME_ORDRE_J =1,
FREQ_MOY =15. ,
AMOR =0.05,
VALE_R =1. ,
INTERPOL =' LIN ',
PROL_GAUCHE =' CONSTANT ',
PROL_DROITE =' CONSTANT ',
FREQ_MIN =0. ,
FREQ_MAX =30. ,
PAS =5. ,
),
);

The 3 parameters of the filter were given:


1. depreciation = 0.05,


2. frequency = 15. Hz,


3. level = 1.