Martin Koppenhoefer <dieterdre...@gmail.com> writes: > Am Fr., 8. Mai 2020 um 03:22 Uhr schrieb Greg Troxel <g...@lexort.com>: > >> 3) Look up the data sheet and mark it as ele:datum=NGVD29 or >> ele:datum=NAVD88 as it turns out. > > IIRR, in another mail, you wrote that the difference between these 2 is > less than a meter, can you confirm this, or did I understand you or > remember wrong?
Yes,it typically is. So let me ask you again, since you keep declining to answer this: Please give an example of an elevation of a real thing that is meaningfully different in one of these "regional datums" (established by a country's survey agency) compared to WGS84 height above geoid. Identify the regional datum, and identify two values linked with a rigorous transformation (such as national survey agencies publish). Thus far, you have not established that there is an actual problem that needs to be solved. _______________________________________________ Tagging mailing list Tagging@openstreetmap.org https://lists.openstreetmap.org/listinfo/tagging
