I'm not sure what you are doing here. You say that you have two continuous variables, but there is only one in the fsgd file. The contrast has 3 items, but it would test for the offset, not the slope. Also, why do you have --no-prune?

On 11/29/2019 3:08 PM, Barletta, Valeria wrote:
Dear Freesurfers,
I am running glmfit to assess for correlation between y and another continue variable across the cortex (ficvf), correcting for the effect of age, using the command:

mri_glmfit \
  --y {surfname_cme}.mgh \
  --fsgd {contrast}.fsgd \
  --C {contrast}.mat \
  --pvr ${hemi}.ficvf.mgh" \
  --surf fsaverage $hemi \
  --glmdir ${glm_dir}/${hemi}_contrast-${contrast}_${surfname_cme} \
  --no-prune

This is my matrix:
1 0 0

And my fsgd file:

Title CME
Class MS
Variable age
Input MS069_R01_01  MS  29
Input MS070_R01_02_R1year  MS  44
Input MS072_R01_04  MS  38
Input MS073_R01_05 MS 47
Input MS075_R01_07_R1year MS 34
Input MS076_R01_08 MS 25
Input MS077_R01_09 MS 30
Input MS078_R01_10 MS 22
Input MS080_R01_12 MS 52
Input MS081_R01_13 MS 31
Input MS082_R01_14 MS 37
Input MS084_R01_16 MS 42
Input MS086_R01_18 MS 28
Input MS087_R01_19_R1year MS 39
Input MS088_R01_20 MS 44
Input MS089_R01_29 MS 44
Input MS090_R01_21 MS 32
Input MS091_R01_22 MS 32
Input MS092_R01_23 MS 36
Input MS094_R01_25 MS 47
Input MS104_R01_36 MS 52


This is the result:


Am I proceeding correctly?

Thank you,
Valeria


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