Some time ago I tried to establish the areas/perimeters for nine versions of Dublin City from 1780 to 1985.Have recently found some results but am unsure if they are acres/hectares/sq kms and for the perimeters. etc. I list them below and would ask if one of you could please solve this for me and remind me how to do it in JOSM or QGIS. I am still at the early stages of QGIS 3.14.
Date Relation Area Perimeter? 1780 6725196 19.120 21.719 1838 6725400 25.737 25.016 1849 6099274 24.983 24.691 1900 5720101 54.663 71.699 1930 5638979 131.396 124.907 1941 6726372 132.115 124.907 1942 6726471 152.840 168.425 1953 6741826 198.223 173.407 1985 1109531 198.356 123.333? _______________________________________________ Talk-ie mailing list Talk-ie@openstreetmap.org https://lists.openstreetmap.org/listinfo/talk-ie