altitude data?
Posted Mar 7, 2009 0:11 UTC (Sat) by flewellyn (subscriber, #5047) [Link]
I don't know if OpenStreetMap has elevation data, but I would imagine not; it is, after all, OpenSTREETMap.
altitude data?
Posted Mar 7, 2009 0:37 UTC (Sat) by jwb (guest, #15467) [Link]
altitude data?
Posted Mar 7, 2009 0:40 UTC (Sat) by flewellyn (subscriber, #5047) [Link]
Especially since the Earth's core is, y'know, liquid. It moves around.
altitude data?
Posted Mar 7, 2009 1:31 UTC (Sat) by roskegg (subscriber, #105) [Link]
But I am wanting this data for religious reasons. That particular bit of data figures in various schools of theology and prophetic interpretation. A number showing that the spot is neither Jerusalem or Babylon should put an end to a lot of bad prophetic interpretation.
Science, meet religion. Religion, science. Thank you.
altitude data?
Posted Mar 7, 2009 2:01 UTC (Sat) by roskegg (subscriber, #105) [Link]
altitude data?
Posted Mar 7, 2009 1:49 UTC (Sat) by iabervon (subscriber, #722) [Link]
altitude data?
Posted Mar 7, 2009 1:59 UTC (Sat) by roskegg (subscriber, #105) [Link]
But the center of volume will be quite sufficient for theological discussions.
altitude data?
Posted Mar 7, 2009 2:37 UTC (Sat) by iabervon (subscriber, #722) [Link]
I think you're trying to ask where the point on the surface is such that the center of the earth is most on that side of the earth. This makes sense for any other point inside the earth, such as the bottom of the Mariana Trench, because you can say that, to get to that point from, say, London, you'd have to go past the center of the earth to get there. But the center of the earth is defined as being the point that's just as much directly under Jerusalem as Milwaukee or Tahiti. In order to get any result at all, you need to find the geometric center, and then find the center of relevant stuff, and then you draw a line from the geometric center through the center of relevant stuff and see where it hits the surface. But you obviously can't use the same center for both things, because then the line doesn't go anywhere.
I was thinking you intended to use the center of mass as the second point, but that would give you different answers over time. Imagine a balloon with a rubber ball in it, flying through the air; there's a center of mass, which is the center of the rubber ball, and there's a center of volume, which is the center of the balloon, and you could pick the point on the surface of the balloon that the ball is most directly under. And that's great, but a moment later the relationship between the two has changed and it's a different point.
altitude data?
Posted Mar 8, 2009 0:24 UTC (Sun) by jordanb (guest, #45668) [Link]
Minor nitpick. The earth's core is divided into two regions. The outer core is -- indeed -- liquid. But the inner is believed to be a solid sphere some 1,500 miles in diameter.
altitude data?
Posted Mar 8, 2009 3:27 UTC (Sun) by iabervon (subscriber, #722) [Link]
altitude data?
Posted Mar 7, 2009 1:54 UTC (Sat) by flewellyn (subscriber, #5047) [Link]
I figured that it was for such reasons. Honestly, you're better off leaving the truth of mythos as mythos, and not trying to "prove" it with the mechanisms of logos. They are two separate categories of truth, and it's a category error to use one to "prove" the other. Especially since mythos is not intended to be literal and provable.
altitude data?
Posted Mar 7, 2009 1:55 UTC (Sat) by roskegg (subscriber, #105) [Link]
altitude data?
Posted Mar 9, 2009 3:22 UTC (Mon) by BrucePerens (guest, #2510) [Link]
That is a very logical approach to the matter, but doesn't really help those who don't wish to sever the connection between science and religion.You are well able to sever the connection between science and religion for yourself. The problem is that there will still be religionists for whom this has no meaning. One I discussed the issue with confessed a lack of belief in cause and effect.
altitude data?
Posted Mar 9, 2009 17:10 UTC (Mon) by nye (guest, #51576) [Link]
This entire discussion is so ridiculous that I'm having trouble believing it isn't all a joke, but surely the answer is that, assuming the Earth to be an oblate spheroid of constant density (not actually true but apparently close enough), any point lying on the equator, plus the poles, would be 'directly above' the centre of mass, if by that you mean that the surface normal at that point intersects the centre (NB. this is based on my intuitive geometric understanding of the spheroid. I haven't attempted to verify it mathematically, though doing so should be straightforward).
If you actually care about the Euclidean distance from the centre, then clearly the poles are going to be the closest points, and given that the density of the Earth isn't really constant, one is likely to be closer than the other (an earlier poster claimed that the north pole is closer to the Earth's centre of mass than the south). Note that the equatorial region, though 'directly above' the centre of mass, is furthest from it.
Re: Mythos vs Logos
Posted Mar 26, 2009 9:25 UTC (Thu) by ldo (guest, #40946) [Link]
flewellyn wrote:
[mythos and logos] are two separate categories of truth, and it's a category error to use one to "prove" the other.
So the fact that there are two different categories of truthwhat kind of truth is that? Is that a mythos or a logos truth?
altitude data?
Posted Mar 7, 2009 7:44 UTC (Sat) by epa (subscriber, #39769) [Link]
...should put an end to a lot of bad prophetic interpretation.Yeah, good luck with that.
altitude data?
Posted Mar 25, 2009 21:35 UTC (Wed) by Baylink (guest, #755) [Link]
altitude data?
Posted Mar 7, 2009 0:34 UTC (Sat) by peterh (subscriber, #4225) [Link]
Anyone want to start OpenTopographicMaps? :-)
altitude data?
Posted Mar 7, 2009 0:41 UTC (Sat) by flewellyn (subscriber, #5047) [Link]
altitude data?
Posted Mar 7, 2009 13:24 UTC (Sat) by dnewcomb (guest, #3312) [Link]
altitude data?
Posted Mar 7, 2009 1:29 UTC (Sat) by roskegg (subscriber, #105) [Link]
altitude data?
Posted Mar 7, 2009 12:11 UTC (Sat) by Burgundavia (subscriber, #25172) [Link]
altitude data?
Posted Mar 7, 2009 12:11 UTC (Sat) by jhellan (subscriber, #17103) [Link]
altitude data?
Posted Mar 12, 2009 3:02 UTC (Thu) by puetzk (guest, #3318) [Link]
http://wiki.openstreetmap.org/wiki/Srtm2Osm
altitude data?
Posted Mar 19, 2009 20:01 UTC (Thu) by pal (guest, #57253) [Link]
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