> On Apr 21, 2017, at 6:21 AM, Henri de La Rochejaquelein <[email protected]> 
> wrote:
> 
> Hello,
> Imagine two datasets A and B.
> I'd like to add values in dataset A, and then create dataset B to only 
> display a subset of the values in dataset A.
> Is this possible ? Dataset B would only be a "view" displaying specific parts 
> of dataset A (eg. the three first points and the three last points in A). 
> Opening it in HDFView should be transparent.
> 
> In the online documentation, some features seem close but none seems to match 
> exactly:
> - Regions for example at first were promizing, but it seems more like a 
> mechanism to memorize data selections on datasets, and there seems to be no 
> means of creating a dataset that will actually display that region of the 
> other dataset specifically,
> - Virtual Datasets were interesting too, but these seem to work with 
> different files, when in our case it must work within one single file.
> 
> Anyone knows of a feature that could help ?

        Virtual datasets can work within the same file and should be what you 
need.

                Quincey



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