get_obs_error_matrix: observation error matrix, should be a square matrix where col...
In robertladwig/thermod: Simplified lake model in R

observation error matrix, should be a square matrix where col & row = the number of states and params for which you have observations

1	get_obs_error_matrix(n_states, n_params_obs, n_step, state_sd, param_sd)

`n_states`	number of states we're updating in data assimilation routine
`n_step`	number of model timesteps
`state_sd`	vector of state observation standard deviation; assuming sd is constant through time
`param_sd`	vector of parmaeter observation standard deviation; assuming sd is constant through time
`n_param_obs`	number of parameters for which we have observations