How to filter parts of a structure based on string contents?

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rbme17 2018-9-20

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编辑： rbme17 2018-9-21

Hi everyone,

I have used the dir function to recursively store file names from folders and sub folders into a structure, along with their dates and folders/locations.

x = dir(fullfile('location1)','**/*.*'));
y = dir(fullfile('location2','**/*.*'));

I want to extract information from the structure in matlab based on whether the name of a file contains FC#, FC_, and more. Along with the names I want to extract, I would like to keep their corresponding data, such as folder and date.

So, how can I take the information I want and store it in a new structure?

..............................................................................................................

Here is what appears in the command window once I initially store all of the information into the structure for reference

x = 
5418×1 struct array with fields:
    name
    folder
    date
    bytes
    isdir
    datenum

Thanks in advance!

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Answer 1

Guillaume 2018-9-20

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https://ww2.mathworks.cn/matlabcentral/answers/420055-how-to-filter-parts-of-a-structure-based-on-string-contents#answer_337671

在 MATLAB Online 中打开

and more

Details of and more would be useful to answer the question properly.

Assuming you want all files that start with FC.

filteredstruct = x(startsWith({x.name}, 'FC'))

If the rule is more complex the filtering function may not be startsWith (maybe regexp) but the principle is the same.

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rbme17 2018-9-21

编辑：rbme17 2018-9-21

Hi Guillaume,

Thanks for your answer. I didn't know functions like startsWith existed, but followed that track end used 'contains' instead. It gave me what I was looking for, thanks for your help!

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