David Vincent-Jones wrote:
> 
> I am trying to convert 7.5' SDTS elevation data from
> the USGS site and have used the SDTSEPOV.EXE
> converter from BLM without any success.
> This should give a Targa (POV) output file
> Keep getting error messages "Error reading data record subfield"
> Anybody had a similar problem?

I noticed the following at the BLM site and it may explain the problem
you are having. Notice the mention of two different format:

  With the confusion caused by the USGS releasing DEMs and calling them 
  SDTS files, I had to re-organize this directory to highlight the differences
  between the 2 very different formats (SDTS/DLG and SDTS/DEM). This is a 
  direct reaction to the vast number of phone calls/email messages that report
  problems that turn out to be the result of trying to use a SDTS/DLG program
  with SDTS/DEM data and visa versa.


-- 
Ken Tyler
  
mailto://tylereng@pacbell.net
http://home.pacbell.net/tylereng/links.htm

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