A regional legacy soil dataset for prediction of sand and clay content with Vis-Nir-Swir, in Southern Brazil - Silva, Elisangela Benedet; Giasson, Elvio; Dotto, Andre Carnieletto; ten Caten, Alexandre; Dematte, Jose Alexandre Melo; Bacic, Ivan Luiz Zilli; Veiga, Milton da (Revista Brasileira de Ciência do Solo, 2019)