making figure from matrix?

hello,

i am trying to plot three different figures for three subjects. E.g. I want to plot one graph looking at the caudate for subject 1, then one caudate graph for subject 2 and have there be seperate graphs spit out. I tried below, but it isn't working:

subj = {'subj01' 'subj02' 'subj03'}
for k = 1:3
    tac(:,k) = load(fullfile(D,subj{k},'tacs','km.hb.tac.dat.txt'));
    tac_caudate(:,k) = load(fullfile(D,subj{k},'tacs','caudate.txt'));
    tac_putamen(:,k) = load(fullfile(D,subj{k},'tacs','putamen.txt'));
    tac_pallidum(:,k) = load(fullfile(D,subj{k'},'tacs','pallidum.txt'));
    tac_ref(:,k) = load(fullfile(D,subj{k},'tacs','km.ref.tac.dat.txt'))
    
%% detrend ventricle and cortex
    
    d_tac_ts_2 = (tac) %detrended time series of pet
    d_tac_ref_ts_2 = (tac_ref) %reference
    d_tac_caudate_ts_2 = (tac_caudate)
    d_tac_putamen_ts_2 = (tac_putamen)
    d_tac_pallidum_ts_2 = (tac_pallidum)
    
    %% plotting in graphs
        for subj{k}
        figure(k)
        plot(t_pet, d_tac_ts_2(:,k))
        plot(t_pet, d_tac_ref_2(:,k))
        end
   
end

Also, I want to have a figure where I each each subject's caudate, putamen, pallidum, etc. How would I go about doing this??

Thanks for the help!

[Jan]

Please explain "it isn't working" with any details.

"have a figure where I each each subject's caudate, putamen, pallidum, etc." - this is not clear to me yet.