.. _V1.01.130:

**v1.01.130** ZZZZ130 - Order validation CREA_CHAMP/OPERATION = 'EVAL'/'DISC'
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**Summary:**

This test case validates two operations of the CREA_CHAMP command:


* the operation 'EVAL' which is used to transform a function field into a real field by evaluating the functions of the function field;


* the 'DISC' operator which is used to modify the "discretization" of an existing field. For example, transforming a field at the nodes into a field at the Gauss points.

The 'EVAL' operator is validated in the following configurations:


* calculation of a constraint field by applying a function dependent on geometry to a field of type ELGA_GEOM_R;


* calculation of a temperature field by applying a function dependent on geometry and time to a field of type NOEU_GEOM_R.

The 'DISC' operator is validated in the following configurations:


* field CART transformed into field ELNO;


* field NOEU transformed into field ELNO;


* field ELNO transformed into field NOEU;


* field CART transformed into field ELEM;


* field ELGA transformed into field ELNO;


* field ELGA transformed into field NOEU.

This documentation is deliberately brief.