Hi,

I have run talairach_avi with the template I have made, and an input file that is manually skull stripped. I ran: talairach_avi --i <input>.nii.gz --atlas <avgeragetemplate> --xfm talairach_avitest.xfm

I had put the <averagetemplate>.nii.gz file in the average folder in freesurfer for this to work.  
I also have <averagetemplate>.4dfp.hdr  ,  <averagetemplate>.4dfp.img , <averagetemplate>.4dfp.mat in the average folder.

Running this creates  talsrcimg.hdr, talsrcimg.img, talsrcimg.mat in the folder where I ran the script. However in the talairach_avi log it gives an error saying /Applications/freesurfer/average/<averagetemplate>.4dfp.ifh does not exist! 
How can I create this file?

I found a brief note in a mailing list that mentioned analyzeto4dfp talsrcimg -O0 -y:

$Id: ifh2hdr.c,v 1.3 2007/05/05 10:45:03 nicks Exp $
Sat Dec 31 03:27:10 2011
Writing: talsrcimg.4dfp.hdr
$Id: analyzeto4dfp.c,v 1.2 2007/05/05 00:00:06 nicks Exp $
Reading: talsrcimg.hdr
header size 348 bytes
hdr.dime.datatype	offset=70	value=2
hdr.dime.bitpix		offset=72	value=8
hdr.hist.orient		offset=252	value=-1
dimensionality     4
dimensions       256       256       256         1
Reading: talsrcimg.img
Writing: talsrcimg.4dfp.img
Writing: talsrcimg.4dfp.ifh
ifh2hdr talsrcimg -r0to255
ori=2

However, I don't know what I need to run this. Will I need to install analyze and 4dfp to be able to run analyzeto4dfp? Or is there another way to get this <averagetemplate>.4dfp.ifh file?

Thanks,

-Jeff