= PDAF_set_seedvec = 

This page documents the routine `PDAF_set_seedvec` of PDAF, which was introduced with PDAF V3.1.

This routine can be used to explicitly set a seed vector which controls the random vector generation. (See also [wiki:PDAF_set_seedset], which allows to choose a predefined seed vector from 20 different choices)

|| This is an advanced functionality and one only uses this in special cases (e.g. if one stored the random number seed with [wiki:PDAF_get_seed] and intends to reset the seed. ||

The interface is:
{{{
  SUBROUTINE PDAF_set_seedvec(seedvec)

    INTEGER, INTENT(in) :: seedvec(4)   ! Seed vector (the last element needs to be odd)
}}}

**Note:**
* One needs to ensure that the last element of `seedvec` is an odd value (The routine does not check this)
* Compared to the routine `PDAF_set_seedset`, this routine allows for a finer control of random numbers
* The routine can be used in combination with [wiki:PDAF_get_seedvec].