User talk:Sesquideus#Prominence and isolation
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Distances
Just saw your Meidum edit and learned that I can use Google maps to measure actual distance. Is that what you did? Doug Weller talk 11:17, 15 January 2022 (UTC)
:Yes, I usually use the desktop version of Google Earth for this. I was surprised that the pyramid was so close to Cairo, I had always thought it was located much further in the desert. Sesquideus (talk) 11:44, 15 January 2022 (UTC)
::Doh, I should have thought of Google Earth. I was thinking that using maps was ok for a short distance, but couldn't see how it would be practical for long distances. I'll remember that. Next question, and I may ask it at RSN, is about citing it. Doug Weller talk 11:54, 15 January 2022 (UTC)
Prominence and isolation
Greetings, where does the information in [https://en.wikipedia.org/w/index.php?title=Ojos_del_Salado&diff=prev&oldid=1245859779 this edit] come from? Jo-Jo Eumerus (talk) 15:42, 15 September 2024 (UTC)
:Hi, direct measurement via Google Earth. I thought adding a ref like this would just clutter the list. I can add it if necessary. Sesquideus (talk) 15:59, 15 September 2024 (UTC)
::Yes, generally, we want a reference. I am not sure that your own measurement on Google Earth meets the "reliability" criteria, though - for one thing, we'd need an explanation of how the measurement was made. Jo-Jo Eumerus (talk) 16:10, 15 September 2024 (UTC)
:::Sure -- but I doubt there will ever be any official reference for topographic isolation (and if, that it would not be obtained by a similar tool anyway). Sesquideus (talk) 16:14, 15 September 2024 (UTC)
::::Yeah, probably better to add a reference, and a note explaining how to find the information. Jo-Jo Eumerus (talk) 16:27, 15 September 2024 (UTC)
:::::I must confess that my understanding is that peakbagger isn't really a WP:RS as noted at Wikipedia:Reliable sources/Noticeboard/Archive 362#Is Peakbagger.com a reliable source? Jo-Jo Eumerus (talk) 11:33, 16 September 2024 (UTC)
::::::Indeed, I have already found obviously false information there, and yet I cannot find anything better (but I understand that it is computed automatically from SRTM or something similar). Maybe it is best to leave the fields empty then.
::::::On the other hand, at least here in Central Europe even official cartographic sources are often provably wrong when it comes to topographic prominence. Also in the Andes I can see deviations up to ±30 metres in elevation across various sources, even for some relatively major peaks. Sesquideus (talk) 12:03, 16 September 2024 (UTC)
:::::::I'd probably leave them empty, too. I don't think the Central Andes are often measured (governments there have bigger problems, usually, and it's not exactly a mountaineering hot spot) so height/elevation estimates aren't often made. Jo-Jo Eumerus (talk) 14:13, 16 September 2024 (UTC)
::::::::I've hidden the fields for the moment. If better sources can be found, it can be unhidden. Jo-Jo Eumerus (talk) 10:35, 18 September 2024 (UTC)