Unable to read DEM file with GTOPO30s

i am trying to read GTOPO30 data I downloaded from USGS https://earthexplorer.usgs.gov/.

I selected a region in So. California with latlim [34 36], lonlim [-120 -118]. When I try reading the DEM file I get an error:

The GTOPO30 directory, 'C:\Documents\MATLAB\gt30w140n40_dem/', does not contain data for the specified latitude longitude limits.

But I am pretty sure I have the correct dem tile with the correct latitude longitude limits.

In fact gtopo30s([34 36],[-120 -118]) returns the correct tile name w140n40. Any help would be greatly appreciated.

[Walter Roberson]

How are you doing the reading?

Unfortunately that file requires a login to download so I cannot test that one myself.

[HRmatlab]

Apparently the files I downloaded from USGS did not contain the data MATLAB was expecting. Downloading the same area from an alternative USGS site https://dds.cr.usgs.gov/srtm/version2_1/SRTM30/ resolved the issue.

Answer 1

[Chad Greene]

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