Hello all, In trying to perform a group analysis on volumetric and DTI data (with test4d.nii.gz file created by fslmerge), I encounter an error. Any help is greatly appreciated. Also, can anyone tell me what programs they prefer to use for DTI group analysis? It seems QDEC isn't helpful if you need volumetric analyses.
bash-3.2$ mri_glmfit --y test4d.nii.gz --fsgd /Applications/freesurfer2/subjects/glm/gender_age.fsgd dods --C /Applications/freesurfer2/subjects/glm/lh-Avg-thickness-age-Cor.mtx --glmdir lh.gender_age.glmdir gdfReadHeader: reading /Applications/freesurfer2/subjects/glm/gender_age.fsgd INFO: DeMeanFlag keyword not found, DeMeaning will NOT be done. Continuous Variable Means (all subjects) 0 Age 64.2 Class Means of each Continuous Variable 1 gender_male 52.5000 2 gender_female 72.0000 INFO: gd2mtx_method is dods
$Id: mri_glmfit.c,v 1.138.2.3 2008/08/27 13:33:05 greve Exp $ cwd /Applications/freesurfer2/subjects/4964-59 cmdline mri_glmfit --y test4d.nii.gz --fsgd /Applications/freesurfer2/subjects/glm/gender_age.fsgd dods --C /Applications/freesurfer2/subjects/glm/lh-Avg-thickness-age-Cor.mtx --glmdir lh.gender_age.glmdir sysname Darwin hostname ryan-mcgarrys-mac-pro.local machine i386 user ryanmcgarry FixVertexAreaFlag = 1 UseMaskWithSmoothing 1 OneSampleGroupMean 0 y /Applications/freesurfer2/subjects/4964-59/test4d.nii.gz logyflag 0 usedti 0 FSGD /Applications/freesurfer2/subjects/glm/gender_age.fsgd glmdir lh.gender_age.glmdir DoFFx 0 Creating output directory lh.gender_age.glmdir Loading y from /Applications/freesurfer2/subjects/4964-59/test4d.nii.gz Matrix condition is 1765.88 Pruning voxels by frame. Found 279419 voxels in mask Saving mask to lh.gender_age.glmdir/mask.mgh search space = 2.23535e+06 ERROR: dimension mismatch between y and X. y has 2 inputs, X has 5 rows.
I also ran bugr and the following output was produced: FREESURFER_HOME: /Applications/freesurfer3
Build stamp: freesurfer-Darwin-leopard-i686-stable-pub-v4.5.0
Kernel info: Darwin 9.8.0 i386