How to process a string in a cell with MatLab -

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'10004_1'     '01:27:29'                '27'         'uncertainty'                   '' '10004_2'     '02:03:10'                '3:29'       'neutral'                       '' '10004_3'     '01:01:01'                '5:31'       'neutral'                       '' '10004_4'     '01:10:02'                '1:16'       'neutral'                       ''

i have above sample data , these "%%:%%:%%" format data needed processed in following way. 

i.e. 01:27:29 => (((1*60+27)*60)+29)*30 numeric value.

i tried using cellfun, , function used in cellfun split string ':', , make calculation. maybe other ways. newbie matlab, no clue. in meantime, try function see if work. please feel free let me know thoughts or sample codes. appreciate this. 

text = '01:23:12'; nums = textscan(text, '%d:%d:%d'); rst  = (((nums{1} * 60 + nums{2}) * 60) + nums{3}) * 30;

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