Thanks Stephen, it's working and it's so much better now.
cheers,
>On Saturday 05 February 2005 04:05, Stephen Smith wrote:
> Hi - yes, just use avwmaths in float mode to rescale the values first,
> for example:
>
> avwmaths <image> -mul 1000 <newimage>
> avmaths_16SI <newimage> <newimage>
>
> Cheers.
>
> On Sat, 5 Feb 2005, [log in to unmask] wrote:
> > Hi Christian,
> >
> > Yes, I should have specified that on my first message. The original
> > images are floats between 0 and 1 stored as 32 bit. That explains why I
> > get a black output. Is there any way I could go around that? conversion
> > from float to integer for example...MRIcro does the job, but since it's
> > not command based and that I have to process all the slices one by one,
> > it's a little bit painful because I have a 256 slices data set that I
> > need to process. Thanks,
> >
> > >On Saturday 05 February 2005 02:56, Christian F.Beckmann wrote:
> > > Hi louien,
> > >
> > > avwmaths_16[S/U]I will convert to integers (and truncate the
> > > non-integer part !) If you currently store 0-1 values as 32bit floats
> > > then all you get is an empty image.
> > > cheers
> > > christian
> > >
> > > On 4 Feb 2005, at 13:53, [log in to unmask] wrote:
> > > > Hi Christian
> > > > Thanks. size wise the command seems to be working, but the image is
> > > > now black.
> > > > All the pixel have value 0. Would you know what's wrong?
> > > > thanks
> > > > cheers,
> > > >
> > > >> On Friday 04 February 2005 18:19, Christian F. Beckmann wrote:
> > > >> Hi
> > > >>
> > > >> you can use
> > > >>
> > > >> avwmaths_16SI infile outfile
> > > >>
> > > >> to do this. This will run avwmaths without performing any operation
> > > >> and
> > > >> force the output to 16 bit signed int. Use avwmaths_16UI for
> > > >> unsigned int
> > > >> cheers
> > > >> christian
> > > >>
> > > >> On 4 Feb 2005, at 05:13, [log in to unmask] wrote:
> > > >>> Hello list,
> > > >>> Can anyone specify the avw command for converting 32bits images to
> > > >>> 16bits
> > > >>> images?
> > > >>> Thanks in advance
> > > >>> cheers,
> > > >>
> > > >> --
> > > >> Christian F. Beckmann
> > > >> Oxford University Centre for Functional
> > > >> Magnetic Resonance Imaging of the Brain,
> > > >> John Radcliffe Hospital, Headington, Oxford OX3 9DU, UK
> > > >> Email: [log in to unmask] -
> > > >> http://www.fmrib.ox.ac.uk/~beckmann/
> > > >> Phone: +44(0)1865 222782 Fax: +44(0)1865 222717
> > > >
> > > > --
> > > > younes@home
> > >
> > > --
> > > Christian F. Beckmann
> > > Oxford University Centre for Functional
> > > Magnetic Resonance Imaging of the Brain,
> > > John Radcliffe Hospital, Headington, Oxford OX3 9DU, UK
> > > Email: [log in to unmask] - http://www.fmrib.ox.ac.uk/~beckmann/
> > > Phone: +44(0)1865 222782 Fax: +44(0)1865 222717
> >
> > --
> > younes@home
>
> --
> Stephen M. Smith DPhil
> Associate Director, FMRIB and Analysis Research Coordinator
>
> Oxford University Centre for Functional MRI of the Brain
> John Radcliffe Hospital, Headington, Oxford OX3 9DU, UK
> +44 (0) 1865 222726 (fax 222717)
>
> [log in to unmask] http://www.fmrib.ox.ac.uk/~steve
--
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