[Camino-users] sfplot warning/error

[Zhuang Song]

Hello Camino Experts,

I encountered a problem when I followed the scripts in the tutorial of the
Q-ball in 'Multi-fibre/HARDI Reconstruction'. I used the example human data
provided in the tutorial. Things went well until I ran sfplot. I got a
number of messages complaining that the backdrop image was smaller than
expected:

Aug 8, 2012 4:48:06 PM apps.SphFuncBitMap readBackDrop
WARNING: Backdrop image smaller than expected.  Continuing...
Aug 8, 2012 4:48:06 PM misc.LoggedException logException
SEVERE: Exception in thread "main" class data.DataSourceException: No more
voxels in data source.
at data.VoxelOrderDataSource.readNextVoxel(VoxelOrderDataSource.java:230)
at data.VoxelOrderDataSource.nextVoxel(VoxelOrderDataSource.java:189)
at apps.SphFuncBitMap.readBackDrop(SphFuncBitMap.java:565)
at apps.SphFuncBitMap.execute(SphFuncBitMap.java:409)
at apps.EntryPoint.main(EntryPoint.java:278)

At the end I still got the output file dwi_ODFs_slicear.rgb with size about
38.5M. The ODF image can be displayed but there is no background image.

I was wondering what could be the problem of the backdrop image in
sfplot. I followed every step in the tutorial except that I had to change
byte length to 4 in running 'split' for fa.img because its data type is
float, i.e.
split -b $((112*112*4)) fa.img splitBrain/fa_slice ,
so that the resulted slice number was matched to the original fa.img (the
backdrop image). The problem was the same in both Linux and Mac.

Furthermore, is there a way to display ODF in 3 different views (axial,
coronal, and sagittal)?

Thanks in advance for your suggestions.

Zhuang
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