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Changes between Version 2 and Version 3 of U_init_dim_obs_f

v2	v3
18	18	* It can be useful to not only determine the size of the observation vector at this point. One can also already gather information about the location of the observations, which can be used later, e.g. to implement the observation operator. In addition, one can already prepare an array that holds the full observation vector. This can be used later by `U_init_obs_l` to initialize a local vector of observations by selecting the relevant parts of the full observation vector. The required arrays can be defined in a module like `mod_assimilation`.
19	19	* The routine is similar to `U_init_dim_obs` used in the global filters. However, if the global filter is used with a domain-decomposed model, it only initializes the size of the observation vector for the local model sub-domain. This is different for the local filters, as the local analysis also requires observational data from neighboring model sub-domains. Nonetheless, one can base on an implemented routine `U_init_dim_obs` to implement `U_init_dim_obs_f`.
	20	* To obtain the full observation dimension one can use the routine [wiki:PDAF_gather_dim_obs_f PDAF_gather_dim_obs_f] (introduced with PDAF 1.13).
	21	* To obtain the full observation vector and full observation coordinates one can use the routines PDAF_gather_obs_f and PDAF_gather_obs_f2, respectively (introduced woth PDAF_1.13
20	22