Error: Assignment has more non-singleton rhs dimensions than non-singleton subscripts

Hello Matlab Experts,

I am running into the following error when I run my script: Assignment has more non-singleton rhs dimensions than non-singleton subscripts

Error in Extract_Beta_Per_Subj_From_116AAL_ROIs_REW22_by_Regressors_text (line 42)

AverageBeta(Subj, betaIndex) = max( mY_data(:,1) );

I searched through matlab and found some helpful advice, but I am still not entirely sure how to fix. Any suggestions would be greatly appreciated!

Below is my entire code:

ROIs_dir = 'X:\TRAUMA\ANALYSES\MID_Roee\AAL_116_ROIs';

SubjDir = 'X:\TRAUMA\ANALYSES\MID_Roee';

Subjs = {'ELS_001' 'ELS_002' 'ELS_003' 'ELS_004' 'ELS_006' 'ELS_007' 'ELS_009' 'ELS_010' 'ELS_011' 'ELS_012' 'ELS_013' 'ELS_014' 'ELS_017' 'ELS_020' 'ELS_021' 'ELS_022' 'ELS_026' 'ELS_027' 'ELS_028' 'ELS_030' 'ELS_036' 'ELS_039' 'ELS_041' 'ELS_043' 'ELS_044' 'ELS_045' 'ELS_047' 'ELS_048' 'ELS_051' 'ELS_052' 'ELS_053' 'ELS_055' 'ELS_057' 'ELS_058' 'ELS_059' 'ELS_060' 'ELS_069' 'ELS_071' 'ELS_072' 'ELS_077' 'ELS_080' 'ELS_082' 'ELS_084' 'ELS_086' 'ELS_089' 'ELS_091' 'ELS_093' 'ELS_096' 'ELS_097' 'ELS_101' 'ELS_103' 'ELS_106' 'ELS_108' 'ELS_111' 'ELS_114' 'ELS_115' 'ELS_119' 'ELS_122' 'ELS_127' 'ELS_130' 'ELS_133' 'ELS_134' 'ELS_136' 'ELS_140' 'ELS_141' 'ELS_143' 'ELS_145' 'ELS_147' 'ELS_150' 'ELS_151'};

Results = [ROIs_dir '/BetaValues_116AAL_ROIs_Max_Beta_One_Sheet_Per_Regressor'];

BetaNames = {'Cue_Rew' 'Cue_Pen' 'Cue_Neu' 'FB_Rew' 'FB_Rew_No_Change' 'FB_Pen' 'FB_Pen_No_Change' 'FB_Neu' 'Target' 'Wrong_Move'};

tempDir = dir( fullfile( ROIs_dir, '*roi.mat' ) );

ROIname = { tempDir.name };

%% Loop for all ROIs

for ROInumber = 1:length( ROIname ),

%% Loop for all regressors

for betaIndex = 1:length(BetaNames)

%% Loop for all subjects

for Subj = 1:length(Subjs)

SubjName = strcat(Subjs(Subj));

Beta_DIR = strcat(SubjDir,'/',SubjName{1,1},'/1st_Level_New');

tempDir = dir( [ Beta_DIR( 1, : ), '/*beta*.nii' ] );

%%%for betaIndex = 1:length(BetaNames),

subjectsMat = char( strcat( Beta_DIR, [ '/beta_00' num2str( betaIndex, '%0.2d') '.nii' ] ) );

roi_file = fullfile( ROIs_dir, ROIname{ROInumber} );

rois = maroi( 'load_cell', roi_file );

[ mY_data, multv, vXYZ, mat] = getdata( rois{1}, subjectsMat, 'n' );

mY_data = mY_data';

%%cahnged form mean to max

AverageBeta(Subj, betaIndex) = max( mY_data(:,1) );

end

xlswrite(Results, Subjs, BetaNames{betaIndex}, 'B1');

xlswrite (Results, cellstr(ROIname{ROInumber}(1:end-8)), BetaNames{betaIndex}, ['A', num2str(ROInumber + 1)]);

xlswrite (Results, AverageBeta(:, betaIndex)', BetaNames{betaIndex}, ['B', num2str(ROInumber + 1)]);

end

AverageBeta = [];

end

Thanks

Emily