How to select a bunch of files from a set of files?

Question

Heramb Gaikwad 2019-12-21

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https://ww2.mathworks.cn/matlabcentral/answers/497630-how-to-select-a-bunch-of-files-from-a-set-of-files

关闭： MATLAB Answer Bot 2021-8-20

Dear friends,

I have 50 *.std files and I want to select bunch of 5 files at a time for further process and so on up to 50 files. Kindly guide me in this regards....

Waiting for quick response.

Thank you

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Answer 1

Walter Roberson 2019-12-21

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https://ww2.mathworks.cn/matlabcentral/answers/497630-how-to-select-a-bunch-of-files-from-a-set-of-files#answer_407301

在 MATLAB Online 中打开

projectdir = 'NameOfDirectoryFilesAreIn';
dinfo = dir( fullfile(projectdir, '*.std'));
filenames = fullfile( projectdir, {dinfo.name});
Nfiles = length(filenames);
randorder = randperm(Nfiles);
groups_of_5 = reshape(filenames(randorder), 5, []);

Now groups_of_5 is a cell array of character vectors with 5 rows and 10 columns. groups_of_5(:,K) is a cell array of the K'th group.

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Answer 2

Heramb Gaikwad 2019-12-21

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Dear Sir,

Thank you or your quick reply

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Heramb Gaikwad 2019-12-25

在 MATLAB Online 中打开

Dear Sir

I have tried following program and got the result.

Dir='XXX\';    %selects particular directory%
data = [Dir,'*.std'];           %selects .std files from the directory%
Data = ls(data);                %lists the .std files%
[r,c] = size(Data);             %determines the size (rows X column)%
files = Data(1:r,1:c);          %stores file names%
for i = 1:10
    j = (((i-1)*5+1):(i*5));
    aa = [];                    %Blank matrix%
    for k = j(:,1):j(:,end)     %k varies from 1 to i%
% calculation %
end
end