How can you read a filename but store a specific number within it?

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Teshan Rezel 2020-5-5

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评论： Teshan Rezel 2020-5-5

Hi All,

I'm trying to analyse a bunch of files that have filenames like "1 crop 1, area - 122637", "1 crop 2, area - 88497" etc.

I need to store the numbers proceeding "area - " as a number and sum them for all the files within a folder.

Is this possible?

Thanks

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Stephen23 2020-5-5

编辑：Stephen23 2020-5-5

'I need to store the numbers proceeding "area - " '

The word preceeding means "in front of". Do you really mean "following" ?

Which numbers do you want?

1 & 2 (i.e. preceeding area)
122637 & 88497 (i.e. following area)

What file extension do these files have?

Teshan Rezel 2020-5-5

hi Stephen, thanks for responding. "Proceeding" can also mean "originating from" and can be considered the opposite to "preceed". Apologies for the confusion!

To clarify, I used the word in the same context you have used the word "following"...so the latter case in your examples.

They have a .jpg file extension.

Many Thanks!

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Answer 1

Stephen23 2020-5-5

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https://ww2.mathworks.cn/matlabcentral/answers/523230-how-can-you-read-a-filename-but-store-a-specific-number-within-it#answer_430508

编辑：Stephen23 2020-5-5

在 MATLAB Online 中打开

D = 'path to the folder where the files are saved';
S = dir(fullfile(D,'*crop*area*.jpg'));
[~,N] = cellfun(@fileparts,{S.name},'uni',0);
V = str2double(regexp(N,'\d+$','match','once'));
Z = sum(V)