py__init_dim_obs_pdaf()

Determine the size of the vector of observations

The primary purpose of this function is to obtain the dimension of the observation vector. In OMI, in this function, one also sets the properties of obs_f, read the observation vector from files, setting the observation error variance when diagonal observation error covariance matrix is used. The pyPDAF.PDAF.omi_gather_obs function is also called here.

Furthermore, in this user-supplied function, one also sets the interpolation coefficients used by observation operators.

Parameters

stepint

Current time step.

dim_obs_pint

Dimension of the observation vector.

Returns

dim_obs_pint

Dimension of the observation vector.