AFNI Message Board

Dear AFNI users-

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Sincerely, AFNI HQ

History of AFNI updates  

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May 04, 2006 03:32PM
Hi!

I encountered a problem while running 3dROIstats. After drawing two ROI regions, I ran the following script:

3dfractionize -input Sub024ROI_Amy+tlrc -template Sub024_EP+tlrc -vote -clip 0.2 \
-prefix Sub024ROI_F_Amy

3dcalc -datum byte -a3 Sub024_BF_First+tlrc -b Sub024ROI_F_Amy+tlrc -prefix Sub024Amy_BF_First -expr "step(abs(a)-6.674)*b"
(I calculated the F statistics from the third subbrik)

3dROIstats -nzvoxels -mask Sub024Amy_BF_First+tlrc Sub024_BF_First+tlrc[0] > Sub024_Amy_BF_First.txt
(I tried to get the intensities from the first subbrik after masking)

I most cases, I got this one:
File Sub-brick Mean_1 NZcount_1 Mean_2 NZcount_2
Sub024_BF_First+tlrc[0] 0 -5.204402 5 6.071803 1

In some cases, no voxels were found.
File Sub-brick
Sub024_BF_First+tlrc[0] 0


But in some cases, I got such weired results. may I request what it means?
File Sub-brick Mean_255 NZcount_255
Sub024_BF_First+tlrc[0] 0 -3.389716 4

Many thanks in advance!
Subject Author Posted

3dROIstats

Shen-Mou_Hsu May 04, 2006 03:32PM

Re: 3dROIstats

Shen-Mou_Hsu May 04, 2006 03:42PM

Re: 3dROIstats

Daniel Glen May 04, 2006 04:16PM

Re: 3dROIstats

Zhark May 04, 2006 04:23PM

Re: 3dROIstats

Shen-Mou_Hsu May 04, 2006 04:52PM

Re: 3dROIstats

Daniel Glen May 04, 2006 04:58PM

Re: 3dROIstats

Shen-Mou_Hsu May 04, 2006 05:16PM

Re: 3dROIstats

Tom May 05, 2006 09:03AM

Re: 3dROIstats

Shen-Mou_Hsu May 05, 2006 02:29PM