[MINC-users] Usage of mincconcat

[Andrew Wood]

Hi Andrew,

Thanks for that. What I've actually done is split a large image into tiles
or cubes for processing. Now that I've got processed hyperslabs, I'm
stitching them back together. From what you described, I'll have to reshape
the slabs for concatting into rows, then reshape the rows for concatting
into slices, then reshape the slices for concatting back to the full volume.

I suppose there's no way to stitch them without taking a big reshaping I/O
hit?

Thanks,
Andrew


On Wed, Sep 4, 2013 at 11:02 PM, Andrew Janke <a.janke at gmail.com> wrote:

> Hi Andrew,
>
> > I'm trying to use mincconcat to stitch some images together.
> >
> > For example, I have A.mnc:
> >
> >     dimension name         length         step        start
> >     --------------         ------         ----        -----
> >     yspace                      1          0.1         -5.7
> >     zspace                    750   0.00295238      15.5531
> >     xspace                    750  -0.00295238      33.3619
> >
> > and B.mnc:
> >     dimension name         length         step        start
> >     --------------         ------         ----        -----
> >     yspace                      1          0.1         -5.7
> >     zspace                    750   0.00295238      15.5531
> >     xspace                    750  -0.00295238      31.1476
> >
> > I've tried concating them along x with something like this:
> >
> > mincconcat -concat_dimension xspace A.mnc B.mnc C.mnc
> >
> > This comes back with an error:
> > "Don't use an image dimension as a loop dimension."
> >
> > Is there a way to concat these images to make one image with
> > xspace:length=1500?
>
> Indeed there is. mincconcat in general will only work if you are
> concat'ing on the slowest varying dimension of a file. Thus before you
> concat do this:
>
>    mincreshape -dimorder xspace,yspace,zspace A.mnc A_res.mnc
>    mincreshape -dimorder xspace,yspace,zspace B.mnc B_res.mnc
>
> At which point:
>
>    mincconcat -concat_dimension xspace A_res.mnc B_res.mnc C.mnc
>
> Should get you what you are after.
>
>
>
> a
> _______________________________________________
> MINC-users at bic.mni.mcgill.ca
> http://www.bic.mni.mcgill.ca/mailman/listinfo/minc-users
>