[Mristudio-users] Fiber Data Reading

[Xin Li]

hello,

You can send me emails about the registration of the tutorials.


Xin

----- Original Message -----
From: David McCoy <dmccoy at temple.edu>
Date: Thursday, March 10, 2011 10:57 am
Subject: Re: [Mristudio-users] Fiber Data Reading
To: "DTI Studio, ROI Editor, DiffeoMap Questions/Support" <mristudio-users at mristudio.org>


> Hello All,
>  
>  Does anyone know who I need to get in contact with to register for 
> the March
>  workshop?
>  
>  On Thu, Mar 10, 2011 at 3:14 AM, David Prakash <davidprakash at gmail.com>wrote:
>  
>  > Dear all
>  >
>  > I am trying to read the fiber data file using my own java code.
>  > In the header I am able to get the sFiberFileTag as "FiberDat".
>  >
>  > Assuming fiber is stored as follows after the 128 bytes header:
>  > int nFiberLength; // fiber length
>  > unsigned char cReserved;
>  > RGB_TRIPLE rgbFiberColor; // R-G-B, 3 bytes totally
>  > int nSelectFiberStartPoint;
>  > int nSelectFiberEndPoint;
>  > XYZ_TRIPLE xyzFiberCoordinate[nFiberLength]; //x-y-z
>  >
>  > Can I say that there are nFiberNr fibers?
>  > For the first fiber data, I tried to read XYZ_TRIPLE data nFiberLength
>  > times
>  > but some how get EOF exception half way.
>  >
>  > I got a value of 704643132 for nFiberNr.
>  > These are the values for the first fiber:
>  >
>  > nFiberLength: 922746880
>  > cReserved: 1
>  > RGB_TRIPLE.r: 221
>  > RGB_TRIPLE.g: 138
>  > RGB_TRIPLE.b: 9
>  > nSelectFiberStartPoint: 0
>  > nSelectFiberEndPoint: 922746880
>  >
>  > I got the EOF while reading the 721879 th XYZ_TRIPLE data. Should
>  > there be 922746880 XYZ_TRIPLE data in the first fiber?
>  >
>  > Please advice.
>  > --
>  > Regards,
>  > David
>  > _______________________________________________
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>  >
>  
>  
>  
>  -- 
>  David B. McCoy
>  Research Specialist - Olson Lab
>  Department of Psychology
>  Temple University - College of Liberal Arts
>  dmccoy at temple.edu
>  215-204-1708
>  
>  
>  Center for Cognitive Neuroscience
>  Department of Psychology
>  University of Pennsylvania
>  dmccoy at psych.upenn.edu 
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