PUTRI, Srikandi; HAZ, Fahrezy Maulana; PERTIWI, Mentari Dian; ARIFIAN, Naf’an. Comparison of Pca (Principal Component Analysis) and Band Ratio Methods Using Landsat 9 Images for Land Cover Visualization Mapping: Case Study: Lubuk Begalung District, Padang City. Sumatra Journal of Disaster, Geography and Geography Education, [S. l.], v. 7, n. 1, p. 35–40, 2023. DOI: 10.24036/sjdgge.v7i1.451. Disponível em: http://sjdgge.ppj.unp.ac.id/index.php/Sjdgge/article/view/451. Acesso em: 27 oct. 2026.