Hi Doug and others, Thanks Doug. I modifiled my number of class in the fsgd which can be got in the attachment. And I am confused with 3 problems: 1st: Is what I modified proper? 2nd: How can I deal with my high correlation between age and edu? 3rd: Is it necessary to tell mri_glmfit to distinguish which subject is female or male in each class if dividing all subjects into 2 classes (i.e con and IA )? Thanks in advance. All the best.
2013-12-19
Rujing Zha
发件人：Douglas N Greve greve@nmr.mgh.harvard.edu 发送时间：2013-12-19 04:59 主题：Re: [Freesurfer] mri_glmfit error 收件人："freesurfer"freesurfer@nmr.mgh.harvard.edu 抄送：
Could be several things. You only have two IA_female and and only 3 con_female. Also, the age and edu are highly correlated. I would try creating a single IA group with males and females and a single con group doug
On 12/18/2013 11:21 AM, Rujing Zha wrote:
Hi all, I try to run mri_glmfit, but it export "ERROR: matrix is ill-conditioned or badly scaled, condno = 1e+08
Possible problem with experimental design: Check for duplicate entries and/or lack of range of continuous variables within a class.". I upload the data in the attachment, and the glmfit_output is the standard output of the "mri_glmfit". Thanks. All the best. 2013-12-19
/Rujing Zha/
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