Hi,
I am from Frankfurt, Germany and I want to use Freesurfer and matlab for the analysis of my longitudinal brain structural data. I want to use linear mixed effects modelling, however, I receive an error message when I execute
[lhTh0,lhRe] = lme_mass_fit_EMinit(X,[1 2],Y,ni,lhcortex,3);
Hello Freesurfer Experts,
I am currently trying to run the Linear Mixed Effects Models described in
the wiki here:
http://surfer.nmr.mgh.harvard.edu/fswiki/LinearMixedEffectsModels
And I am running into difficulties that are fairly well described by the
last message in this previous mail thread:
Hi Franziska,
looks to me that for some reason it does not find the vec function which
should be part of the package
under ..freesurferpath/matlab/vec.m
so maybe you just need to source FreeSurfer in the shell before you
start matlab (from that same shell).
Best, Martin
On 11/21/2014 02:25
Hi Martin,
thanks a lot for your help and the quick reply! It works now!
Best,
Franziska
Gesendet: Freitag, 21. November 2014 um 21:34 Uhr
Von: "Martin Reuter"
An: "Freesurfer support list"
Betreff: Re: [Freesurfer] Linear Mixed Effects Models
Hi Franziska,
Hi Eric
The meaning of the variable ni is
explained in the header of each script that have it either as an input
or output. But you can also download the sample data from the wiki page
(ftp://surfer.nmr.mgh.harvard.edu/pub/data/long_mixed_effects_tools-data.tar.gz)
where you will find instances
Hi Eric,
I just came across your old email, have you ever figured it out?
You don't need to compute ni beforehand, it is computed in sortData.
This is what it says in the help:
ni: Vector (mx1, m # of subjects in the study) whose entries are the
number of repeated measures for each subject (ord
