tombh

8 ms·

31.
by tombh 8mo ago
Ohh yes, nice ideas.
32.
by tombh 8mo ago
I'm not that familiar with high-pass filters. But yes it's the way it exposes local changes in elevation that is unique. Indeed the heatmap is generated dynamically for every change to the zoom and viewport.
33.
by tombh 8mo ago
That's actually one of the legitimate uses cases we've consider for the algorithm.
34.
by tombh 8mo ago
Yes! It's the longest line of sight in the UK. I grew up in Wales so it was one of the first I looked for.
35.
by tombh 8mo ago
Thank you! This is exactly the kind of thing I was hoping people would use this for.
36.
by tombh 8mo ago
Thanks! That imgur link is great, I totally see what you mean. So surely there is a way to at least automate linking to these views? I don't know about embedding them cos Google will want money. We're very open to suggestions, and
37.
by tombh 8mo ago
Hey Marc! I'm afraid I don't have a good answer. I'm sure with future runs will get closer to you and udeuschle.de I thought of you when we saw Colombia appear so high up in the list, I remembered that's something you&#x
38.
by tombh 8mo ago
Roy Castle!
39.
by tombh 8mo ago
I was wondering that too, that this might be a better visualisation of certain geological features. But I don't have much experience, so can't say for sure.
40.
by tombh 8mo ago
Exactly. And it could even be tweaked slightly with some favourable refraction.
41.
by tombh 8mo ago
Could it be this? https://www.udeuschle.de/panoramas/makepanoramas.htm
42.
by tombh 8mo ago
Thank you <3 Well there is a photo near our #3 longest line of sight https://www.guinnessworldrecords.com/world-records/66661-lon...
43.
by tombh 8mo ago
We're actually thinking of writing a SIGBOVIK paper where we explore running this whole thing for a Flat Earth!
44.
by tombh 8mo ago
Woah, I've been thinking about this whole project for so long, but never considered that!
45.
by tombh 8mo ago
Yes, but, there's one small problem, storing this extra data for the whole world starts to run into the petabytes!
46.
by tombh 8mo ago
Right, I think we need to make that "In current viewport" thing more prominent somehow. So this is the NZ longest line right https://map.alltheviews.world/longest/173.61386108398438_-42... One thing to note a
47.
by tombh 8mo ago
Wow, glad you had fun exploring. It suddenly made me think of a little feature that I'm not sure we made the best job of exposing. In the little trophy icon toggle on the right, there's the Top Ten list of views, then under those
48.
by tombh 8mo ago
The resolution of the underlying data is only ~100m. So most houses, vegetation, etc, gets blurred into the same smooth surface. There are actually higher resolution data sets, even up to centimetre scale, using LiDAR, of cities. We'd
49.
by tombh 8mo ago
Thanks! Well the record for the longest photographed line of sight is in the same region as our #3 longest line, at 483km https://www.guinnessworldrecords.com/world-records/66661-lon... So not far off. And I think that
50.
Show HN: Algorithmically finding the longest line of sight on Earth(alltheviews.world)
412 points by tombh 8mo ago|181 comments
51.
by tombh 10mo ago
Of course, I have to assume that you have considered more outcomes than I have. Because, from my five minutes of reflection as a software geek, albeit with a passion for history, I find this the most surprising thing about the whole project
52.
by tombh 10mo ago
> Batteries-included tree-sitter grammar collection with HTML rendering and WASM support. That's the best one sentence description there is and it's at the top of the Github README. I think that would fit nice at the top of ht
53.
by tombh 10mo ago
Some people just genuinely deserve praise.
54.
by tombh 10mo ago
Big if true
55.
by tombh 1y ago
Yes! These are very much the kinds of questions I'm interested in. The search for the single longest line of sight on Earth is just an excuse to play around in this space.
56.
by tombh 1y ago
Right, yes variance over time is what I was referring to. I did a bit of research and indeed there seems to be some evidence backed minimum and maximum values I can plug in. But it's quite a variance! Now I'm thinking I should do
57.
by tombh 1y ago
I wonder if this is related to the so-called coastline paradox? https://en.wikipedia.org/wiki/Coastline_paradox In other words, what is the criteria for filtering out good and bad elevation candidates? Does it help ima
58.
by tombh 1y ago
Kyrgyzstan? Damn, I'm sorry. I've update the article now.
59.
by tombh 1y ago
This is pretty much what I'm already doing. The kernel is written on the GPU and just does raw visibility calculations.
60.
by tombh 1y ago
The underlying data isn't that accurate, but I think with a tool like https://www.heywhatsthat.com you can set the coordinates and elevation manually and create a custom viewshed.

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