[MINC-development] Can anyone help me with four-dimensional datasets

[John G. Sled]

MINC dimensions can be regularly sampled (defined in terms of start and
step) or irregularly sampled (the file contains an array specifying
each offset.  It appears your volume is the latter.  As a work around,
you can set the start and step manually eg.

minc_modify_header -dinsert 'time:step=3' temp.mnc
minc_modify_header -dinsert 'time:start=10' temp.mnc

John


On Thu, Apr 24, 2003 at 11:46:49AM -0400, Mark GRIFFIN wrote:
> I'm trying to create a four-dimensional dataset to store fMRI data and get
> the following results for mincinfo on my minc file
> 
> shadow:minc_create_data$ mincinfo temp.mnc
>  file: temp.mnc
>  image: signed__ short 0 to 19
>  image dimensions: time zspace yspace xspace
>      dimension name         length         step        start
>      --------------         ------         ----        -----
>      time                        2      unknown      unknown
>      zspace                     19          5.5            0
>      yspace                    256            1            0
>      xspace                    256            1            0
> 
> 
> The dimension names are set as the variables MItime for example. But I
> can't understand why I get the time step and start as unknown, also I
> don't know why I can't set the start to be non-zero.
> 
> 
> _______________________________________________
> MINC-development mailing list
> MINC-development@bic.mni.mcgill.ca
> http://www.bic.mni.mcgill.ca/mailman/listinfo/minc-development
>