1. But

The operator MAC_MODES makes it possible to calculate a correlation matrix between two modal bases. The correlation coefficient between two vectors of this base is all the closer to 1 when these two vectors are collinear.

It also makes it possible to calculate the difference between two modal bases using the energy criterion IERI (Interface Regularity Energy Indicator). This criterion is all the closer to 0 as the two vectors are very close.

It also makes it possible to calculate the generalized matrix relating to the weighting matrix entered as input.

Produces a table_sdaster concept.