How can i read files inside a folder?

2022 1 27
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更新时间：2022 1 27
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0 个投票

Hello ,
i have a folder that contains some .dat file . How can i open this folder and then read(for example) the first 4 .dat files ?
Any help would be valuable .
*i dont need to just diplay the files , i need the actual .dat files to be opened and then work with the data inside them .

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 采纳的回答

Walter Roberson
Walter Roberson 2022-1-27

0 个投票

foldername = 'SnowCoverJuly2000';
dinfo = dir( fullfile(foldername, '*.dat') );
dinfo(5:end) = []; %only want first 4
nfiles = length(dinfo);
for K = 1 : nfiles
thisfile = fullfile(dinfo(K).folder, dinfo(K).name);
open(thisfile);
end
You might have problems if you have not installed a third-party program that is registered as being able to open .dat files.

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Gn Gnk
Gn Gnk 2022-1-27
Thank you for your answer ,but it seems that there is not a dinfo.fodler field .When i look at dinfo it appears with 5 fields : name,date,bytes,isdir and datenum
Gn Gnk
Gn Gnk 2022-1-27
Also i get this error : Reference to non-existent field 'folder'.
Gn Gnk
Gn Gnk 2022-1-27
I figured it out .Because the .folder extension was added after 2016b release i had this problem. So i changed the code to:
foldername = 'SnowCoverJuly2000';
dinfo = dir( fullfile(foldername, '*.dat') );
dinfo(5:end) = []; %only want first 4
nfiles = length(dinfo);
for K = 1 : nfiles
thisfile = fullfile(foldername, dinfo(K).name);
open(thisfile);
end
and it worked perfectly. Thank your for your help.

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更多回答（1 个）

KSSV
KSSV 2022-1-27

0 个投票

thepath = 'giveyourpathhere' ;
files = dir([thepath,filesep,'*.dat']) ; % get .dat files in the folder
N = length(files) ; % total dat files present in the folder
for i = 1:N
thisfile = fullfile(files(i).folder,files(i).name) ; % get each file
% load the file
% do what ever you want
end

1 个评论
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Gn Gnk
Gn Gnk 2022-1-27
Thank you for your answer ,but it seems that there is not a files.fodler field .I get this error :
Reference to non-existent field 'folder'.

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