Hi
I'm creating a brain mask using 3dAutomask from raw data that has been
registered. When I multiply this mask (all 1's and 0's) by my 3dFim+
created dataset (both positive and negative voxel values), I lose my
negative values even within the mask areas with values of 1.
Why is this? How can I retain those negative values?
These are my commands:
3dfim+ -nfirst 1 -polort 1 -input Expt_{$expt}_SMO+orig.HEAD -ideal_file
\ LF_121403_{$expt}.1D -out All -bucket
Expt_{$expt}_FFT_FIM
3dAutomask -prefix automask_{$expt} Expt_{$expt}_3dreg+orig
3dcalc -a automask_{$expt}+orig -b Expt_{$expt}_FFT_FIM+orig \
-prefix Expt_{$expt}_Masked_FFT_FIM+orig -expr "a*b"
(I've read -help, the message board, and searched the README's)
Thanks.
------------------------------------------
Posted to Phorum via PhorumMail
