[Mrtrix-discussion] fibre tracts format

[Philip G Batchelor]

Hi Donald

cheers! just what I was looking for, basically I was planning to write a 
Matlab script, sounds all good then!

it's cold here!

Ph

Donald Tournier wrote:
> Hi Philip,
>
> Sorry, there is currently no documentation on that file format... It 
> is quite simple, though. It consists of a text header, followed by 
> binary data. 
>
> The first line of the text header should read "mrtrix tracks". Each 
> line after that is a "key: value" pair. The  last line of the text 
> header should be a single "END" statement, after which the data should 
> be considered to be binary. Only two entries in the header are 
> required to read the data. The "file: . offset" entry specifies the 
> byte offset in the current file (".") to the start of the binary data. 
> The "datatype: Float32LE" specifies the datatype (always float32) and 
> byte order (the last two characters, either BE or LE). 
>
> The binary data are stored as triplets of 32 bit floating point 
> values, one per point along the track. Boundaries between tracks 
> consist of a triplet of non-finite values, either NaN or Inf (Inf 
> actually signals the end of file).
>
> Anyway, I've attached a little matlab script to load the tracks, which 
> you might find useful...
>
> Cheers!
>
> Donald.
>
>
> On 11 March 2010 22:38, Philip G Batchelor <philip.batchelor at kcl.ac.uk 
> <mailto:philip.batchelor at kcl.ac.uk>> wrote:
>
>     Hi
>
>     am trying to find in the documentation a description of the output
>     file format for fibre tracking, i.e.
>     .tc and .tck file formats, as I need to write some data readers.
>     Sorry, I guess it's somewhere, and am just missing it.
>
>     Ph
>     _______________________________________________
>     Mrtrix-discussion mailing list
>     Mrtrix-discussion at www.nitrc.org
>     <mailto:Mrtrix-discussion at www.nitrc.org>
>     http://www.nitrc.org/mailman/listinfo/mrtrix-discussion
>
>
>
>
> -- 
> Jacques-Donald Tournier (PhD)
> Brain Research Institute, Melbourne, Australia
> Tel: +61 (0)3 9496 4078