Posted by carl senior on October 24, 2002 at 14:12:50:
Hello
I am trying to extract an Impulse response function for a seven regressor model (command line for one subject is below) - when i try to run this code i get the error :
3dDeconvolve Error: Improper X matrix (cannot invert X'X)
Of all the errors that i have seen this one is new !
Does anybody know what it means and how i can remedy the code below ?
Many thanks for your help
Carl
3dDeconvolve -input CHallrunsRS+orig\
-concat runlist.1D\
-num_stimts 7\
-stim_file 1 regone_imp.1D\
-stim_minlag 1 0\
-stim_maxlag 1 12\
-iresp 1 regonesirf\
-sresp 1 regonessrf\
-stim_file 2 regtwo_imp.1D\
-stim_minlag 2 0\
-stim_maxlag 2 12\
-iresp 2 regtwoirf\
-sresp 2 regtwosrf\
-stim_file 3 regthree_imp.1D\
-stim_minlag 3 0\
-stim_maxlag 3 12\
-iresp 3 regthreeirf\
-sresp 3 regthreesrf\
-stim_file 4 regfour_imp.1D\
-stim_minlag 4 0\
-stim_maxlag 4 12\
-iresp 4 regfourirf\
-sresp 4 regfoursrf\
-stim_file 5 regfive_imp.1D\
-stim_minlag 5 0\
-stim_maxlag 5 12\
-iresp 5 regfiveirf\
-sresp 5 regfivesrf\
-stim_file 6 regsix_imp.1D\
-stim_minlag 6 0\
-stim_maxlag 6 12\
-iresp 6 regsixirf\
-sresp 6 regsixsrf\
-stim_file 7 regseven_imp.1D\
-stim_minlag 7 0\
-stim_maxlag 7 12\
-iresp 7 regsevenirf\
-sresp 7 regsevensrf\