[MINC-users] mincreshape sets start/step on vector_dimension

[Robert D. Vincent]

Hi Alex,

I think Vlad may have fixed this a while back - I don't know if it's in a
release yet.

    -bert

On Thu, Oct 20, 2016 at 10:44 AM, Alex Zijdenbos <zijdenbos at gmail.com>
wrote:

> Hi all,
>
> Using mincreshape to manipulate the spatial dimensions of a deformation
> field, I notice two things (example below):
>
> 1) It complains about 'vector_dimension' being a non-standard dimension.
> Given the ubiquitous minctracc-generated deformation fields, shouldn't
> 'vector_dimension' be a 'standard' dimension by now?
>
> 2) it arbitrarily sets start=0 and step=1 for that dimension. If a
> dimension is untouched and doesn't/shouldn't have start or step values to
> begin with, I'd say that mincreshape shouldn't 'invent' a start and step
> for it, but leave these undefined.
>
> Thoughts?
>
> -- A
>
>
> $ mincreshape -dimorder zspace,yspace,xspace in_grid_0.mnc out_grid_0.mnc
> (from micreate_std_variable): Variable 'vector_dimension' is not a standard
> MINC variable
> Copying
> chunks:.....................................................
> ............................................................
> ............................................................
> ............................................................
> ............................................................
> ............................................................
> ............................................................
> ............................................................
> ............................................................
> ..........Done.
> $ mincinfo in_grid_0.mnc out_grid_0.mnc
> file: in_grid_0.mnc
> image: signed__ float -11.107932090759277344 to 11.2635040283203125
> image dimensions: vector_dimension zspace yspace xspace
>     dimension name         length         step        start
>     --------------         ------         ----        -----
>     vector_dimension            3      unknown      unknown
>     zspace                    181            1          -72
>     yspace                    217            1         -126
>     xspace                    181            1          -90
>
>
> file: out_grid_0.mnc
> image: signed__ float -11.107932090759277344 to 11.2635040283203125
> image dimensions: vector_dimension zspace yspace xspace
>     dimension name         length         step        start
>     --------------         ------         ----        -----
>     vector_dimension            3            1            0
>     zspace                    181            1          -72
>     yspace                    217            1         -126
>     xspace                    181            1          -90
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