[netcdfgroup] Help with reading cdf attr_list attr

• To: netcdfgroup@xxxxxxxxxxxxxxxx
• Subject: [netcdfgroup] Help with reading cdf attr_list attr
• From: Michael Powell <mwpowellhtx@xxxxxxxxx>
• Date: Sun, 10 May 2015 23:26:47 -0400

Hello,

I could be reading the file format wrong, but I am reading the parts
as specified in the BNF. Possibly (POSSIBLY), I need to wait for
fixed-length data until after reading the header, but even with that,
I fail to account for the attr::nelems or the corresponding nc_type,
before what looks like the next attr finds its way into the header, at
least in a couple of the examples I am trying to read.

http://www.unidata.ucar.edu/software/netcdf/docs_rc/file_format_specifications.html
http://www.unidata.ucar.edu/software/netcdf/examples/files.html

     att_list     = ABSENT | NC_ATTRIBUTE  nelems  [attr ...]
     attr         = name  nc_type  nelems  [values ...]

I am new (refreshing) with CDF, so I am likely not interpreting
something quite right, or it's an undocumented gotcha.

Would someone kindly look into this and let me know? I'm sure there's
some nuance about the format versus the BNF that I am failing to
comprehend somehow.

Thank you...

Best regards,

Michael

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    • From: Michael Powell