Hi - the precision you need depends on exactly what comparison you are
making. It's probably better to start by using fslmaths to (e.g.)
subjtract two images that you wish to compare, and then use FSLView
and fslstats to get a feel for what's in the difference image.
Cheers.
On 1 Feb 2008, at 16:59, Ben Mayer wrote:
> For a school project I am doing some optimization work on FSL,
> specifically xfibers.
>
> One of the things that I need to do is be able to compare the output
> from the original program to the optimized program to make sure they
> are the same. I found the fsl2ascii tool that appears to allow for
> easy output of data in human readable format. It would not be a big
> deal to build a script using the output from fsl2ascii to compare two
> datasets to see if the answer is the same. I noticed that fsl2ascii
> outputs 7 significant digits.
>
> What I am wondering is if 7 significant digits is all that is needed?
> Is less precision acceptable?
>
> Thank you,
>
> Ben
>
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Stephen M. Smith, Professor of Biomedical Engineering
Associate Director, Oxford University FMRIB Centre
FMRIB, JR Hospital, Headington, Oxford OX3 9DU, UK
+44 (0) 1865 222726 (fax 222717)
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