Participatory Mapping and PGIS

Applications of participatory mapping (PMapping) and PGIS to the local spatial knowledge are expanding; therefore, updated ethics good practice improvements needed. The intention here is secern, or distinguish between, two pairs concepts essential PMapping – between ‘facts' ‘values' in being mapped ‘representation' ‘representativity Pmapping processes. Local not homogeneous; facts values distinct although intrinsically related. In a world ‘fake news´ attacks on science, it even more from maps other media. Concerning representation both values, questions how represent knowledge. representativity process, whose presented, why? democratic; exceptionalist informed that should be acknowledged as strength, deficiency.