Re: PVD/PVA: Examples for multi-dimensional arrays?

[Michael Davidsaver via Core-talk <core-talk@aps.anl.gov>]

On 11/21/18 8:10 AM, Ralph Lange via Core-talk wrote:
> Hi Mark,
> 
> On Wed, 21 Nov 2018 at 16:37, Mark Rivers <rivers@cars.uchicago.edu <mailto:rivers@cars.uchicago.edu>> wrote:
> 
>     What do you mean by "support"?  NTNDArrays are certainly N-dimensional.  Do you want the API to allow extracting rows/columns, etc.?
> 
> 
> Hm.
> The problem with leaving n-dim support to the application is that every application using n-dim arrays will have to do its own implementation of the accessors. Also, because of that, these n-dim arrays will likely not be compatible between applications.

You may be missing an important point in the example code I linked.
This code is not accessing an n-dim array in some abstract mathematical sense.
It is translating, without copying, into a numpy ndarray.
This is a necessary step as there is no shortage of array container types.

> Does that sound like I am asking for a new normative type?

I hope not, because I think this would be wholly unnecessary.