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Geotagging app
"PeterN" wrote
| I do it the easy way. I take a snap of the location with my iPhone. All | relevant information is recorded. | For what it's worth, I got curious and looked at some photos a friend took at Mt Desert Island last year, on an iPhone 6. The lat/long seems to be very close, within yards. The altitude, however, is not so accurate. A photo of me looking at a rock on the beach recorded altitude 4.53 meters (14.8 feet). Another shot taken in the same spot (within a few feet on a nearly flat beach) shows 6.6 meters (21.6 feet). This photo... http://www.jsware.net/Files2/cliff1.jpg ....shows 58.84 meters (193 feet). We were probably 30-40 feet above the water. There may be variation, accounting for tides, but it still seems to be inflated by about 500% and/or to some extent arbitrary. How can it vary by 50% in the same spot with pictures taken a few minutes apart? I don't know. Perhaps different info sources? Maybe a change in cell towers that caused variations in location? It might be worthwhile to check some known altitudes and maybe check those against Google before depending on the stats. (Though I don't know what one depends on them for. Why does anyone care about altitude stats except, maybe, when mountain climbing?) |
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