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On Fri, 31 Jul 2009 00:47:21 +0800, 朱森华 <[log in to unmask]> wrote:

>everybody, when i do some regession work in some other software, i neen to
>use the design matrix generated by SPM, here i need to know what does
>right*bf(1) and left*bf(1)mean. i find in the spm.mat, there are some
>structural matrix named xX,xY,xbf, so i want to ask what does "xX,xY,xbf"
>mean? especially what does "bf" mean here.
>thanks very much~~

One way to find more information is to look at the comment section in the 
SPM matlab code.

A handy way to do that if you're using UNIX/Linux is to go into the SPM code 
directory and type e.g.

    grep bf *.m


>
>-- 
>Best wishes!
>
>Sen-Hua Zhu
>Department of psychology
>Sun Yat-sen University
>135 Xingang West Road, Haizhu District, Guangzhou (510275), P.R.China
>ɭ
>ɽѧѧϵ
>㶫ʡк¸·135ţ510275
>