Goor morning, I have created a database with a 4 species, with 5 different heights, 5 different dbhs and 5 land uses. Example with Picea abies: ID ESPECIE Altura DBH LANDUSE 1 Picea abies 5 5 Park 2 Picea abies 5 5 Institutional 3 Picea abies 5 5 Multi family residential 4 Picea abies 5 5 Transporta...