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[IDV #AEF-303753]: USGS supposed DEM data file

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  • Subject: [IDV #AEF-303753]: USGS supposed DEM data file
  • Date: Wed, 02 Jul 2008 07:51:16 -0600
Hi Stu-

> Full Name: Stuart Wier
> Email Address: address@hidden
> Organization: UNAVCO
> Package Version: 2.5
> Operating System: linux
> Hardware: x86
> Description of problem: The USGS has global dem files at
> http://edc.usgs.gov/products/elevation/gtopo30/README.html
> 
> I put one online at
> 
> http://geon.unavco.org/unavco/TOPO/E060N40.DEM
> with its related "header file" from the same tar  source at
> http://geon.unavco.org/unavco/TOPO/E060N40.HDR
> 
> The IDV opens the file but making a color display gets the error:
> 
> "Reading DEM: http://geon.unavco.org/unavco/TOPO/E060N40.DEM
> Data object 
> "/home/wier/.metapps/DefaultIdv/tmp/1214933527639_0_13146179897147292_27E060N40.DEM"
> not compatible with "dem" data family"

The only USGS DEM format that the IDV supports is the old ASCII DEM format:

http://rockyweb.cr.usgs.gov/nmpstds/acrodocs/dem/2DEM0198.PDF

> Any ideas?  Does the header part need to be inside the dem file?

Some of this data is being made available through a THREDDS Data Server here:

http://coast-enviro.er.usgs.gov/thredds/bathy_catalog.html

That would be your best option.

Don

Ticket Details
===================
Ticket ID: AEF-303753
Department: Support IDV
Priority: Normal
Status: Open