matlab에 날짜를 변환

Question

나는 9660 x 51 행렬 있습니다. 첫 번째 열은 날짜입니다. 나는 datenum을 사용하여 날짜를 변환하고 datestr을 (를) 사용하여 날짜를 표시했습니다. 하지만 전체 행렬의 날짜와 데이터를 표시하는 for 루프를 만들고 싶습니다. 예를 들어

:

'12/31/11' '18:00' '9722' 'Millbrook' '13.05' '1.763' '1.14' '0.791' '1.589' 
'12/31/11' '17:00' '9721' 'Millbrook' '13.03' '1.763' '1.138' '0.789' '1.58' 
'12/31/11' '16:00' '9720' 'Millbrook' '12.98' '1.763' '1.138' '0.786' '1.565' 
'12/31/11' '15:00' '9719' 'Millbrook' '13.14' '1.76' '1.138' '0.786' '1.555' 
'12/31/11' '14:00' '9718' 'Millbrook' '13.13' '1.76' '1.138' '0.786' '1.558' 
'12/31/11' '13:00' '9717' 'Millbrook' '13.19' '1.76' '1.135' '0.784' '1.567' 
'12/31/11' '12:00' '9716' 'Millbrook' '13.16' '1.76' '1.133' '0.781' '1.594' 
'12/31/11' '11:00' '9715' 'Millbrook' '13.15' '1.758' '1.133' '0.781' '1.626' 
'12/31/11' '10:00' '9714' 'Millbrook' '13.1' '1.758' '1.13' '0.781' '1.663' 
'12/31/11' '9:00' '9713' 'Millbrook' '12.81' '1.758' '1.13' '0.781' '1.689' 
'12/31/11' '8:00' '9712' 'Millbrook' '12.81' '1.758' '1.13' '0.781' '1.697' 
'12/31/11' '7:00' '9711' 'Millbrook' '13.02' '1.758' '1.133' '0.786' '1.699' 
'12/31/11' '6:00' '9710' 'Millbrook' '13.02' '1.76' '1.138' '0.793' '1.707' 
'12/31/11' '5:00' '9709' 'Millbrook' '13.02' '1.763' '1.143' '0.801' '1.719' 
'12/31/11' '4:00' '9708' 'Millbrook' '13.03' '1.765' '1.145' '0.801' '1.729' 
'12/31/11' '3:00' '9707' 'Millbrook' '13.03' '1.763' '1.143' '0.801' '1.741' 
'12/31/11' '2:00' '9706' 'Millbrook' '13.03' '1.763' '1.143' '0.801' '1.748' 
'12/31/11' '1:00' '9705' 'Millbrook' '13.04' '1.763' '1.143' '0.801' '1.753' 
'12/31/11' '0:00' '9704' 'Millbrook' '13.04' '1.763' '1.14' '0.798' '1.763' 

그것을 단순화하기 위해 나는 전체 전체 매트릭스에 있지만 하루 볼 수 있어야합니다. 도움말 : 당신은 정말 날까지 그 그룹에 날짜를 변환 할 필요가 없습니다

Answer 1

에 대한

감사합니다. 고유 한 날짜를 가져 와서 다음과 같이 반복하십시오.

myData = { 
'12/31/11' '18:00' '9722' 'Millbrook' '13.05' '1.763' '1.14' '0.791' '1.589' 
'12/31/11' '17:00' '9721' 'Millbrook' '13.03' '1.763' '1.138' '0.789' '1.58' 
'12/31/11' '16:00' '9720' 'Millbrook' '12.98' '1.763' '1.138' '0.786' '1.565' 
'12/31/11' '15:00' '9719' 'Millbrook' '13.14' '1.76' '1.138' '0.786' '1.555' 
'12/31/11' '14:00' '9718' 'Millbrook' '13.13' '1.76' '1.138' '0.786' '1.558' 
'12/31/11' '13:00' '9717' 'Millbrook' '13.19' '1.76' '1.135' '0.784' '1.567' 
'12/31/11' '12:00' '9716' 'Millbrook' '13.16' '1.76' '1.133' '0.781' '1.594' 
'12/31/11' '11:00' '9715' 'Millbrook' '13.15' '1.758' '1.133' '0.781' '1.626' 
'12/31/11' '10:00' '9714' 'Millbrook' '13.1' '1.758' '1.13' '0.781' '1.663' 
'12/31/11' '9:00' '9713' 'Millbrook' '12.81' '1.758' '1.13' '0.781' '1.689' 
'12/31/11' '8:00' '9712' 'Millbrook' '12.81' '1.758' '1.13' '0.781' '1.697' 
'12/31/11' '7:00' '9711' 'Millbrook' '13.02' '1.758' '1.133' '0.786' '1.699' 
'12/31/11' '6:00' '9710' 'Millbrook' '13.02' '1.76' '1.138' '0.793' '1.707' 
'12/31/11' '5:00' '9709' 'Millbrook' '13.02' '1.763' '1.143' '0.801' '1.719' 
'12/31/11' '4:00' '9708' 'Millbrook' '13.03' '1.765' '1.145' '0.801' '1.729' 
'12/31/11' '3:00' '9707' 'Millbrook' '13.03' '1.763' '1.143' '0.801' '1.741' 
'12/31/11' '2:00' '9706' 'Millbrook' '13.03' '1.763' '1.143' '0.801' '1.748' 
'12/31/11' '1:00' '9705' 'Millbrook' '13.04' '1.763' '1.143' '0.801' '1.753' 
'12/31/11' '0:00' '9704' 'Millbrook' '13.04' '1.763' '1.14' '0.798' '1.763' }; 

uniqueDays = unique(myData(:,1)); 

for ind = 1:length(uniqueDays) 

    myDay = uniqueDays{ind}; 
    logThisDay = strcmpi(myDay, myData(:,1)); 

    thisDayData = myData(logThisDay,:); 

    disp(sprintf('********* DATA FOR %s *********', myDay)); 
    disp(thisDayData(:, 2:end)) 

end