How to check if a file of certain type exists in folder?

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Aadil 2012-9-6

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https://ww2.mathworks.cn/matlabcentral/answers/47512-how-to-check-if-a-file-of-certain-type-exists-in-folder

评论： Devalla lakshmipathirao 2020-9-7

采纳的回答： Azzi Abdelmalek

Hi All,

How can I check if a .pdf file exists in a folder

I know I can use the Exist command if I know the full filename, but I don't have the file name

Thanks,

EDIT: I will need the output as true or false

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Azzi Abdelmalek 2012-9-6

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https://ww2.mathworks.cn/matlabcentral/answers/47512-how-to-check-if-a-file-of-certain-type-exists-in-folder#answer_58060

编辑：Azzi Abdelmalek 2012-9-6

在 MATLAB Online 中打开

any(size(dir([yourFolderName '/*.pdf' ]),1))

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Aadil 2012-9-6

And all your answers worked so thanks to everyone

Dev-iL 2016-5-22

It's probably better (in terms of different OS support) to use fullfile instead of constructing the path manually.

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Dr. Seis 2012-9-6

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编辑：Dr. Seis 2012-9-6

在 MATLAB Online 中打开

You could try doing something like:

dir_struct = dir( fullfile(your_path,'*pdf') );
if numel(dir_struct) == 0
  % then there are no files with extension "pdf"
else
  % there is a "pdf" file in your directory
  % dir_struct(1).name gives the file name of the first "pdf" file listed
end

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Jan 2012-9-6

I assume you need '*.pdf' with the dot.

Devalla lakshmipathirao 2020-9-7

Using the code by @Dr. Seis, how can i check if .pdf exists i.e, not based on number of elements but rather by checking the file name .

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