[netcdfgroup] NetCDF-4 filesize question.

• To: NetCDF Mailing List <netcdfgroup@xxxxxxxxxxxxxxxx>
• Subject: [netcdfgroup] NetCDF-4 filesize question.
• From: Wei Huang <huangwei@xxxxxxxx>
• Date: Mon, 14 Apr 2014 15:38:10 -0600

Hello group,

I am doing some NetCDF-4 test, and find when I use fixed, and unlimited 
dimensions cause file size
changed dramatically.

Below is a list of files (with dimension 5 x 10 x 73 x 144, with few group 
names):

1. has one unlimited dimension (the most left one)
2. has two unlimited dimensions (the left two)
3. has fixed dimensions.

-rw-r--r--   1 huangwei  CIT\Domain Users   6312828 Apr 14 15:25 
NCLcreatedNC4.nc.1unlimited
-rw-r--r--   1 huangwei  CIT\Domain Users  10508612 Apr 14 15:24 
NCLcreatedNC4.nc.2unlimited
-rw-r--r--   1 huangwei  CIT\Domain Users   2112758 Apr 14 15:26 
NCLcreatedNC4.nc.fixed


My question is: does our program (has issues which) cause the file size 
difference,
or, is it NetCDF4 which needs the extra space (for unlimited dimension)?

Thanks,


Wei Huang

• Follow-Ups:
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    • From: Kent Yang

• References:
  • [netcdfgroup] NF90_CHAR vs NF90_STRING for attribute values
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  • Re: [netcdfgroup] NF90_CHAR vs NF90_STRING for attribute values
    • From: Mark Hadfield