% eegplugin_pca() - pca plugin

function eegplugin_pca( fig, try_strings, catch_strings);

% create menu
toolsmenu = findobj(fig, 'tag', 'tools');
submenu = uimenu( toolsmenu, 'label', 'PCA plugin');

% build command for menu callback
cmd = [ '[tmp1 EEG.icawinv] = runpca(EEG.data(:,:));' ];
cmd = [ cmd 'EEG.icaweights = pinv(EEG.icawinv);' ];
cmd = [ cmd 'EEG.icasphere = eye(EEG.nbchan);' ];
cmd = [ cmd 'clear tmp1;' ];

finalcmd = [ try_strings.no_check cmd ];
finalcmd = [ finalcmd 'LASTCOM = ''' cmd ''';' ];
finalcmd = [ finalcmd catch_strings.store_and_hist ];

% add new submenu
uimenu( submenu, 'label', 'Run PCA', 'callback', finalcmd);