[netcdfgroup] nccopy and changing chunk sizes
Hi,
I'm seeing an improvement of 10,000 times faster when processing data
with "contiguous" storage when compared to "chunked" storage. I would
like to change the chunk sizes to see if that is the problem. For that I
tried to use nccopy as follows:
```
nccopy -c time/1,latitude/180,longitude/360
profile_input_threads_cfs/e5.oper.an.sfc.128_137_tcwv.ll025sc.2016010100_2016013123.nc
profile_input_threads_comp_chunk/e5.oper.an.sfc.128_137_tcwv.ll025sc.2016010100_2016013123.nc
```
the command runs successfully, with no error reported, producing the
file, but the chunk sizes are not what I said, and they are the same as
in the original file. What could be the problem?
Burlen
