Dear Alfonso
Dear Conn-Users

When testing this combination in the seed-to-voxel analysis:
-males (coded with "1", otherwise "0")
-females (coded with "1", otherwise "0")
-clinical_score_males (values for males, otherwise "NaN")
-clinical_score_females (values for males, otherwise "NaN")

using [0 0 1 -1] (for a gender by score interaction), this error below appears when trying to run the 2nd level results. This is a subgroup analysis and groups don't overlap. Is it because of the Conn version not accepting "NaN" (15.h), wrong contrast or still something else? I would appreciate any comment.
Thank you. Lucas


ERROR DESCRIPTION:
Error using conn_process (line 3555)
Null design matrix (all subjects have missing data or all selected covariates have zero or NaN values). Please check your second-level covariates
Error in conn_process (line 45)
case 'results_voxel', [varargout{1:nargout}]=conn_process(16,varargin{:});
Error in conn (line 5558)
conn_process('results_voxel','readsingle','seed-to-voxel');
Error in conn_menumanager (line 119)
feval(CONN_MM.MENU{n0}.callback{n1}{1},CONN_MM.MENU{n0}.callback{n1}{2:end});
CONN v.15.h
SPM12 + DEM FieldMap MEEGtools
Matlab v.2016b