The CE (coefficient_efficiency) map has gray patches because cfr’s CE calculation requires a full time series coverage at each grid cell, so any year with missing field data from the given years will make CE undefined (NaN) at that gridpoint. Correlation is unaffected because it is computed using only the available pairs of years. We want to patch that so that the CE function is robust to NaNs.
The CE (coefficient_efficiency) map has gray patches because cfr’s CE calculation requires a full time series coverage at each grid cell, so any year with missing field data from the given years will make CE undefined (NaN) at that gridpoint. Correlation is unaffected because it is computed using only the available pairs of years. We want to patch that so that the CE function is robust to NaNs.