Hi Andy,
On Oct 6, 2010, at 12:17 PM, Salnikov, Andrei A. wrote:
> Hi all,
>
> I think I know the answer to this but want to check
> what experts have to say anyway.
>
> I have a 1-dimensional dataset in a file whose elements
> are multi-dimensional arrays (say [32][256][256]). All
> together this looks like one large 4-dimesional array
> (almost). Is there a way to read subsets of those
> 3-dimensional arrays into memory without reading whole
> array? (I guess not)
No, not currently.
> Hyperslabs allow me to select only 1 dimension for the
> dataset itself, I guess what I want to do is to extend
> the hyperslab to the elements of the dataset which
> are arrays themselves. I could not see anything in
> documentation saying this is possible or impossible,
> but my guess is that selection does not extend inside
> single elements. Is that so?
You are correct. Currently, the only mechanism for selecting less than
an entire element of a dataset is the way a subset of fields in a compound
datatype can be accessed during a dataset read/write operation.
Quincey
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