This is a very pleasant 3d space to navigate on mobile. I was intuitively able to pan, zoom, rotate about the vertical axis as well as tilt. Put two fingers on the screen and move them vertically to tilt, move them tangent to the original contact center point of the place between two fingers to rotate, pinch them to zoom.
3D map of the Czech Republic, made from 12.5cm/px imagery (2017)
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Re: 3D map of the Czech Republic, made from 12.5cm/px imagery (2017)
#22Awesome. Breathtaking. But the imagery isn't from satellite data, is it? Must be from airplanes.
Indeed, something like 25cm or better is typically shot from airplanes. I don't remember what the physical limit is for image quality given a reasonably sized spy satellite (iirc it's around the 20cm mark), but commercially at least, the high quality imagery is all airplanes. Governments often commission such planes to fly ~yearly at something like 10 cm, as well as commissioning height maps[1], but the very good stu…
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Re: 3D map of the Czech Republic, made from 12.5cm/px imagery (2017)
#23Why don't map sites ever publish 3D as topo lines overlaid on a flat 2D map? It's computationally much cheaper, and it's not too hard to learn to read a topo map, as long as the elevations are printed in a reasonably dense manner.
Because for a layperson, an actual 3D map is much easier (and prettier) to read than a topo line map.
Literally none of these are "actual 3D maps," they are topo maps. The only additional information they provide is the 3D extension of objects that were already discoverable in 2D.
"Can this map help me find the town hall of Whittier, Alaska?" If not, it isn't a 3D map.
Re: 3D map of the Czech Republic, made from 12.5cm/px imagery (2017)
#24Awesome. Breathtaking. But the imagery isn't from satellite data, is it? Must be from airplanes.
Indeed, something like 25cm or better is typically shot from airplanes. I don't remember what the physical limit is for image quality given a reasonably sized spy satellite (iirc it's around the 20cm mark), but commercially at least, the high quality imagery is all airplanes. Governments often commission such planes to fly ~yearly at something like 10 cm, as well as commissioning height maps[1], but the very good stu…
Doesn't PDOK provide 8 cm resolution photos of The Netherlands?
Re: 3D map of the Czech Republic, made from 12.5cm/px imagery (2017)
#25It’s missing Královec
Re: 3D map of the Czech Republic, made from 12.5cm/px imagery (2017)
#26Very nice! Obligatory and shameless self promotion everytime the topic of 3D maps comes up:
I recently created a web app to visualize GPS tracking files in a 3D terrain. You can upload your GPX or FIT files and it generates the 3D Terrain using Babylon.js
It's called https://cubetrek.com
Re: 3D map of the Czech Republic, made from 12.5cm/px imagery (2017)
#27my only gripe with mapy.cz is that it's difficult to figure out the altitude of a place. You have to count the contour lines which can get tricky. Id love m seeing it (next to wgs84) when i long tap a location on a map
Re: 3D map of the Czech Republic, made from 12.5cm/px imagery (2017)
#28Nice! (Note: It takes forever to load, but it's worth the wait.) The not yet loaded tiles give a interesting "thirteen floor" effect :) I found a glitch https://imgur.com/a/6Oh3AQn https://en.mapy.cz/zakladni?m3d=1&height=1100&yaw=234&pitch=... It looks like a quarry. Is the wall too vertical just in the border between tiles? Did they dug that part just between photos?
Yes, it is owned by a company I work for. It is an open pit coal mine. Not a glitch.
The glitch is a small very black thing under the arrow in my screenshot. It looks like a rotated "P". If you move, it's a hole and you can see the map under the image through it.
Re: 3D map of the Czech Republic, made from 12.5cm/px imagery (2017)
#29It’s missing Královec
For the non-Czechs: this is a running joke about Kaliningrad electing to be annexed by Czech Republic after the occupied territories in Ukraine "voted" to join Russia.
There were a bunch of memes and tweets going around, adverts for holidaying by the Czech seaside, or joining the new Czech Navy to serve aboard the aircraft carrier "Karel Gott". A few companies played along, it was actually pretty funny :)
Re: 3D map of the Czech Republic, made from 12.5cm/px imagery (2017)
#30Anyone with MSFS, how does its terrain compare? Both are based on conceptually similar tech?
Didn't play for some time but pretty similar. MSFS spawns individual meshes for trees/buildings when you get closer so still a bit better imo, but keep in mind in game you are always pretty high so they didn't focus on first person view details.