2015年1月19日 · The screenshot shows the availability of ~3m (1/9 arc second) and 10m (1/3 arc second) resolution NED datasets throughout the USA. According to this map, you should have excellent 10m coverage for your New Mexico locations. To the right of the screenshot, you can see the helpful download options.

2015年5月20日 · This answer comes with a hefty health warning as you are essentially faking an improvement of resolution. There are a few approaches you could use to fake 10m DEM out of a 30m original. Here's a couple: You could simply use the raster calculator and set the resolution. This is the simplest and crudest approach but possibly the most honest.

But the tiles are very expensive once you start getting reasonably-sized areas. It has a horizontal resolution of 5m (I think there is a cheaper 10m resolution dataset), and a good vertical resolution (about 20cm IIRC). Edit. The Environment Agency has …

When processing 30m and 10m DEM data downloaded through the National Map Viewer from the National Elevation Dataset, we noticed horizontal and vertical striping not only in the produced results, but in merely analytical hill shades of the raw DEMs.

2017年1月19日 · The USGS Global Data Explorer has version 2 of the 30 m ASTER Global DEM—apparently it's an improvement over version 1, but in my opinion it's still pretty crummy. They also have the 30 m and 90 m Shuttle Radar Topography Mission DEM and the 1 km GTOPO30 DEM. A better source for the (90 m) SRTM DEM is …

2012年7月5日 · If you have access to the original lidar data, just interpolate the data to the desired resolution using the "Topo to Raster" tool in ArcGIS. If you only have access to the 1m DEM raster, it seems like the best, albeit least efficient, method would be to convert the raster to points and use a thin plate or Bi-cubic spline.

2017年2月18日 · The interface at "Fundamental Geospatial Data" provides the download by small segments, which is very time-consuming. Any option, where/how to do bulk download of JPGIS 5m DEM data? Or as a single-file in COG? –

I have a 10m DEM covering part of a state, a 20m DEM covering the whole state, and a 90m DEM covering the whole country. How can I merge them together, getting the best quality available in each area? The 10m and 20m are provided in ADF format, but …

2015年11月12日 · It seems that many different DEM resolutions (10m, 30m, 100m) could be created from a contour map (with, for instance 50m elevation changes marked), but of course some of the resulting DEMs will be wrong in one of two …

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