Q:
I am downloading seamless elevation datasets from the USGS National Elevation
Database (http://seamless.usgs.gov/index.php). They offer download in
GeoTIFF, ArcGrid, BIL and GridFloat formats. Which download formats will work
in Surfer?
A:
They all work in Surfer 9 and 10.
The GeoTIFF, ArcGrid, BIL and
GridFloat format from the NED are all recognized by Surfer as valid grid files,
and you can use them in any place in Surfer that requires a grid file (creating
maps, or any of the grid functions under the Grid menu.
Even the GeoTIFF, which is in
TIF format, is actually a grid file since each pixel has Z information
associated with it. When using the TIF file, you will need to change the Files
of type in the Open dialog to either All Files or TIF
Tagged Image, since TIF is not included in the Common Grid Files
group.
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