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Wow this is huge news. I wonder what higher resolution the DoD now has at their disposal to prompt them to release this. For any potential consumers of the dat
by mrgriscom 12y ago
Wow this is huge news. I wonder what higher resolution the DoD now has at their disposal to prompt them to release this.
For any potential consumers of the data, be aware the SRTM has significant gaps in coverage: nothing above latitude N61 or below S56, and also extensive voids in mountainous areas (typically the most interesting part!) and also in deserts.
This guy [http://www.viewfinderpanoramas.org/dem3.html http://www.viewfinderpanoramas.org/dem3.html] (90's web design notwithstanding) has done amazing work in filling these gaps to turn SRTM into a truly global dataset. I wonder if he's kicking himself that he's now about to sink another few years of his life upgrading everything to 1".
If anyone wants to casually peruse the (old 3") data, I found a rather nice rendering here [http://maps-for-free.com/ http://maps-for-free.com/], and was inspired to do my own take [http://mrgris.com/projects/oilslick/ http://mrgris.com/projects/oilslick/].
- 7952 12y ago>> Wow this is huge news. I wonder what higher resolution the DoD now has at their disposal to prompt them to release this. I would love to know what the DoD are achieveing with high res synthetic apeture radar imagery. It has some really amazing properties (like measuring tiny changes in elevation) that are barely exploited commercially. The ability to track everything though cloud cover has obvious military applications.
- xemoka 12y agoNice work with the 'Oilslick' elevation ramp. That provides for some very neat spatial pattern recognition/identification. I don't think I've seen anything quite like that before.
- r0muald 12y agooilslick is really neat, I find it both pleasing to look at and actually useful to view the full elevation range. Is there any common geospatial software that includes oilslick out of the box?
- mrgriscom 12y agoI doubt it; I only finished it last week. But the map tiles are hosted on S3 and free to use as a custom map layer in Leaflet/OpenLayers/GMaps API.