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Re: Can ferret read HDF files?


I've been able to work with a bunch of HDF4 files after converting them using the ncdump utility distributed along with the hdf lib.

Renaming the HDF ncdump to hncdump, and using the ncgen utility from netCDF lib, the pipe: hncdump f1.hdf | ncgen -o f1.cdf creates a CDF file readable in Ferret. Care must be taken, though, because some attributes and grid info may be lost.


Ansley Manke wrote:

Hi all,
Ferret can read HDF files via DODS, but it will be successful in doing that only if the HDF file is similar in its structure to a
COARDS or CF netCDF file. So, if the file can be put on a DODS server, then Ferret can open it. Often, you will need to apply the USE/ORDER= qualifier to change the ordering of the coordinate axes.

If a file is on a DODS server, you can look at the DAS in your browser (the URL that ends in .das). When you look at the attribute data check to see if there are dimension variables with attributes that look like a Latitude or Longitude as in the COARDS conventions.


lee lindsay wrote:

Dear ferret users,

Can ferret read HDF files? If not, is there any simple way to change
HDF files to netCDF files?

Thanks in advance.


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