From WikiPilipinas: The Hip 'n Free Philippine Encyclopedia
'Ratagnon (also transliterated as Latagnon or Datagnon) is a language spoken by the Ratagnon people, an indigenous group from Occidental Mindoro. Its speakers are shifting to Tagalog, and it is nearly extinct. The Ratagnon of Occidental Mindoro has an estimated population of 17,562 scattered in around 200 Ratagnon settlements (OSCC, IV, 1993).
Like all the other Mangyan communities, the Ratagnons are ensaged in swidden agriculture. Their villages are not formally developed. Settlements of four to five houses per settlement are located apart from each other. A typical Ratagnon house is made of indigenous materials — mostly of wood, bamboo, and nipa.
Some of the male members of the Ratagnon community still wear their traditional dress which consists of loincloth as a lower garment. The women wear woven cotton used as wrap-around matched with an upper garment made of handwoven nito just enough to cover the breasts.