import images with timestamps label

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ennes mulla 2021-7-7

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/873548-import-images-with-timestamps-label

评论： Peter Perkins 2021-7-27

Hi

I have images that have timestamp label, I want only to import only the timestamp and store in one colmun array without loading all images to spacework.

The images labeling has the follwing Shape: yyyy-mm-dd:HH:MM:ss.jpg

for instance 2021-07-05-14:17:05.jpg

Many thanks in advance

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ennes mulla 2021-7-7

在 MATLAB Online 中打开

Thank you. I have used the following code and i could store the name of images in an array and then convert it into datenum and return into datetime so I could plot it against another set of data I had and now it works as i wanted it to be

S = dir(fullfile(directory,'*.jpg'));
N = {S.name};
N = erase(N,".jpg")
N = transpose (N)
N = strrep (N,'_',':')
fmt ='yyyy-mm-dd-HH:MM:SS';
DateString = datestr(N,fmt);
DateString = datenum(DateString);
DateString = transpose(DateString);
HistoryJune24th = datetime(DateString,'ConvertFrom','datenum')

Peter Perkins 2021-7-27

在 MATLAB Online 中打开

DateString = datestr(N,fmt);
DateString = datenum(DateString);
DateString = transpose(DateString);
HistoryJune24th = datetime(DateString,'ConvertFrom','datenum')

seems very round-about. Can't say this strngly enough: Don't use datestr and datenum. If this is still part of your code, I suggest

HistoryJune24th = datetime(N,"Format",'yyyy-MM-dd-HH:mm:ss')

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