Where can I get free DEM data?

Where can I get free DEM data?

Let’s dive into our list of free global DEM data sources:

• Space Shuttle Radar Topography Mission (SRTM) NASA only needed 11 days to capture Shuttle Radar Topography Mission (SRTM) 30-meter digital elevation model.
• ASTER Global Digital Elevation Model.
• JAXA’s Global ALOS 3D World.
• Light Detection and Ranging (LiDAR)

What file format is DEM?

Digital Elevation Model
Digital Elevation Model (DEM) Formats. DEMs are files that contain either points (vector) or pixels (raster), with each point or pixel having an elevation value. They come in a variety of file formats, from . csv to .

How do I download Aster DEM data?

1. Search for ASTER GDEM at the top left.
2. Pick the area.
3. Get the list of URLs you want, and save as a text file.
4. You will need a NASA account, and be logged in on your browser to do the downloads (the browser will prompt you to log in for the first download).

What is Gmted?

The Global Multi-resolution Terrain Elevation Data (GMTED) 2010 dataset is the elevation dataset of choice for global and continental scale applications. GMTED2010 is the result of a joint development effort between the U.S. Geological Survey (USGS) and the National Geospatial-Intelligence Agency (NGA).

Where can I find DEM files?

There are two methods to obtain DEM data:

• Using DATASETS: If you know the name of the quadrangle or area, you can obtain the files individually.
• USGS GEOSpatial clearinghouse: http://www.usgs.gov.
• GeoCommunity: http://data.geocomm.com *
• MapMart: http://www.mapmart.com *
• ATDI: http://www.atdi-us.com.

How do I open an HGT file in ArcGIS?

HGT files can be opened with VTBuilder, ArcGIS Pro, and Safe Software’s FME Desktop. DG Terrain Viewer works, too, for both Windows and Linux.

How can I convert lidar to DEM?

To convert the LAS Dataset to a Bare Earth DEM, select Toolbox → Conversion Tools → LAS Dataset to Raster. Select the LAS Dataset you just created as the Input LAS Dataset. Select the file Geodatabase you created earlier as the location for the Output Raster. In the Value Field, leave the default as ELEVATION.

How do I download ASTER Data for free?

Go to https://earthdata.nasa.gov/ and type ASTER in the search window. You should be able to get all the ASTER data products held in the NASA Land Processes Distributed Active Archive Center which is located at the EROS Center, Sioux Falls, South Dakota, which is a USGS facility. The data are available at no charge.

Where can I download Aster GDEM?

The GDEM and ASTWBD are available for download from NASA Earthdata and Japan Space Systems. This ASTER product is available at no charge for any user pursuant to an agreement between METI and NASA.

Where can I download DTED data?

GET DATA: http://earthexplorer.usgs.gov/, Access the Shuttle Radar Topography Mission data using the USGS EarthExplorer.

1. Title: Shuttle Radar Topography Mission DTED Level 1 (3-arc second) Data (DTED-1)
2. Creator: National Geospatial-Intelligence Agency (NGA)
3. Publisher: USGS Earth Resources Observation and Science (EROS)

What does dem mean in free world data?

Free World DEM Data, 3D in your Computer. Digital Elevation Model (DEM) is a raster image that holds z values, it is used widely during the analysis process where surface height value are important.

Where can I find the DEM data format?

DEM Data Record Format (http://web.archive.org/web/20080511221408/http://eros.usgs.gov/guides/usgs_dem_supplement.html). Includes annotated examples for the three record types, A, B, and C. Link via Internet Archive. No longer available from USGS EROS program. Various resources related to Native DEM data from earlier USGS websites.

Which is DEM format does the USGS use?

A digital elevation model (DEM) represents terrain elevations for ground positions at regularly spaced horizontal intervals. The USGS “native” DEM format was developed specifically for this category of data and dates from 1992. A DEM dataset is a single file comprising 1024-byte ASCII-encoded (text)…

Are there any DEM data sets in the public domain?

The days of data shortage are gone. More and more DEM data sets are published under free licenses or as public domain. Through INSPIRE in Europe more and more will follow. The datasets below are not complete. This project will focus on free high resolution datasets with a spatial resolution of 30 meters and below on county/state scale.