Hi Mathieu,
There are details on this here:
http://nifti.nimh.nih.gov/nifti-1/documentation/nifti1fields/nifti1fields_pages/datatype.html
So e.g. type 4 is signed short (16bit), type 16 is 32bit float (hence
matching avwmaths_32R).
Also, e.g. avwhd does show a text data_type field, as well as the
numerical datatype one. Try
avwval image.nii data_type
Best,
Ged.
mathieu LOUPPE wrote:
> dear fsl list,
>
> I try to find informations about datatype because my data are in datatype4
> and i need to know the number of bits of my data to rescale my phase.
> Has everyone any informations about datatype 4 or datatype 16??
> When you do avwmaths_32R on a datatype 4 your file become datatype16.
>
> What does it mean??
>
> Thanks.
> Mathieu.
>
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