Dutch grid map layers for biodiversity surveys

This dataset contains map layers in GeoPackage format with the following grids used in biodiversity surveys in the Netherlands: Layer name Size (m) Description IvonGrid Kwartierhok 1250x1042 Used between 1902 and 1950 by IVON botanical surveys. IvonGrid Uurhok 5000x4168 Used between 1902 and 1950 by IVON botanical surveys. Each square contains 16 'kwartierhok' squares with corresponding first four characters in column name. RdGrid Kilometerhok 1000 Used since 1950 in biodiversity surveys. Squares that fall within the same 5 km square have the same value RdGrid Uurhok 5000 Used since 1950 in bi... Mehr ...