I want to convert DXF from AutoCAD to KML. It works but the coordinates don't come out right when I compare them to a KML produced with global_mapper and consequently it is shifted some when uploading the KML to Google Earth. Maybe someone can illustrate me how to set/calculate the parameters right to adjust the shift?
ogr2ogr -f KML -s_srs "+proj=utm +zone=30 +ellps=WGS84 +towgs84=-36.7193107889714,-4.418216852011938,0,0,0 +units=m +datum=WGS84 +no_defs " -t_srs epsg:25830 -dialect SQLite -sql "select * from entities where layer='SUPERFICIES ZV'" SUPERFICIES_ZV.kml D02-32.dxf
Southern Spain ETRS89 30 EPSG:25830