The accuracy of nccopy documentation, NUG entries need to be verified

[WardF]

As reported by @lesserwhirls:

PR #1087 introduced an alternative form for per-variable chunking, as described below:

So using nccopy, you can set a chunkspec based on dimensions like so:

-c dim1/chunkSize2,dim2/chunkSize2,dim3/chunkSize3

According to this PR, it looks like the chunkspec was extended to allow a per-variable chunking, using

-c var:c1,c2,...ck

where var is the name of the variable and ci is the chunksize for the ith dimension of that variable. However, I don't see this second form documented in the man page of nccopy , and the entry in the NUG describing the chunkspec option says that you cannot use nccopy to chunk variables independently.

It is unclear if this new form was added and the supporting documentation was never updated, or if the new form was removed at some point. Either way, we just need to verify that the documentation is accurate. Tagging @DennisHeimbigner in as well.

[lesserwhirls]

It looks like the man page is updated and correct - the issue was that I was looking at the output of nccopy -h, which does not show an example of the variable level chunking syntax (might be too much text to add there, though). The NUG page should be updated. @ethanrd