how to read multiple excel files, apply hampel filter and save them into folder with same names as input files

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bushra fatima 2019-7-16

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https://ww2.mathworks.cn/matlabcentral/answers/471856-how-to-read-multiple-excel-files-apply-hampel-filter-and-save-them-into-folder-with-same-names-as-i

回答： Mario Chiappelli 2019-7-18

Hi everyone

I have 20 excel files in a folder, I want to read those files, apply hampel filter and save them into a folder with same names.

files=dir('E:\EEG_RECORDING\Male_Data\*.csv');

files=files(~[files.isdir]);

n=length(files);

for i=1:n

data=xlsread(fullfile(files(i).folder, files(i).name));

a=hampel(data,y)

end

I am not getting how to apply filter and save the files. Here is attachement of error.

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bushra fatima 2019-7-17

Thankyou for your response

'y' is currently output file (result of hampel filter). I want to save data as csv file and want to generate same names as input files. How can I generate file name in loop and save them to a folder. my main is to apply hampel filter to 20 files and save them to a folder.

Bob Thompson 2019-7-17

Making a file name within a loop is usually accomplished by concatonating a string. I will provide an example, but you will have to change it to come up with your specific desired output.

y = [files(i).folder,'\output_',num2str(i),'.csv'];

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