| | 1 | = PDAF_gather_obs_f = |
| | 2 | |
| | 3 | This page documents the routine `PDAF_gather_obs_f` of PDAF, which was introduced with PDAF V1.13. |
| | 4 | |
| | 5 | In the local filters (LESKTF, LETKF, LSEIK, LNETF) this routine gathers the full observation vector dimension from process-local observation vectors of size dim_obs_p and returns the full vector. |
| | 6 | |
| | 7 | The routine depends on `PDAF_gather_dim_obs_f` which defines the process-local observation dimensions. |
| | 8 | |
| | 9 | The routine is typically used in the routines `init_dim_obs_f_pdaf` and `obs_op_f_pdaf` if the analysis step of the local filters is parallelized. |
| | 10 | |
| | 11 | The interface is the following: |
| | 12 | {{{ |
| | 13 | SUBROUTINE PDAF_gather__obs_f(obs_p, obs_f, status) |
| | 14 | }}} |
| | 15 | with the following arguments: |
| | 16 | * `obs_p` : `integer, intent(in)`[[BR]] Process-local observation vector |
| | 17 | * `obs_f` : `integer, intent(out)`[[BR]] Full observation vector |
| | 18 | * `status` : `integer, intent(out)`[[BR]] Status flag (0 for no error) |
| | 19 | |
| | 20 | Notes: |
| | 21 | * The routine `PDAF_gather_dim_obs_f` has to be called once before using `PDAF_gather_obs_f` because it internally initializes the local observation dimensions for gathering. The most recent call to `PDAF_gather_dim_obs_f` defines the dimensions used here. |
