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simple correlation between every two voxels

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August 14, 2012 07:35PM
Hi,

I am trying to calculate simple correlations between every two voxels in the brain. I have 3d + time data file for input (which contains time series for the whole brain), and a large 1D ideal file containing all voxel's time series. My command is this:

3dfim+ -input cleanTS_${subject}_${run}_tcat+orig -mask anatomy_mask_Alli2+orig -ideal_file cleanTScat.${subject}.${run}.noijk.txt -out Correlation -bucket Corr_${subject}_${run}

The error message is:

++ 3dfim+: AFNI version=AFNI_2010_10_19_1028 (Nov 16 2010) [64-bit]
++ Authored by: B. Douglas Ward
Error: the number of ideal or ort regressorseach
exceeds the hard coded limit of 200
Contact authors if you need the limit extended.

I think the problem is that the ideal file contain 50000+ voxels' time series and exceed the limit. Could you please give some advice about it? Or a better method to run the simple correlations betwee every two voxels.

Thank you very much!

Jie
Subject Author Posted

simple correlation between every two voxels

jie yang August 14, 2012 07:35PM

Re: simple correlation between every two voxels

rick reynolds August 14, 2012 09:12PM

Re: simple correlation between every two voxels

jie yang August 15, 2012 02:33PM



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