Data maintenance and evaluation

The field survey data, aerial photo interpretation data and geodata collected in the NFI are carefully organised and compiled in databases. The data are therefore available for queries and evaluations at any time.

NFI data are evaluated using the NAFIDAS evaluation software developed in-house. NAFIDAS guides the NFI staff through the evaluation and ensures that all necessary parameters, such as inventory date, target variable, classification unit and evaluation unit are entered completely and in the correct combination. The estimated values are then calculated using the open-source programming language Python. For this purpose, software modules read the inventory data directly from the databases.