Sir i have 200.mat file in one folder and i want program that read it automatically without merging the files

Question

jaypal singh 2019-1-7

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https://ww2.mathworks.cn/matlabcentral/answers/438597-sir-i-have-200-mat-file-in-one-folder-and-i-want-program-that-read-it-automatically-without-merging

评论： Jan 2019-1-7

I have folder name 1 which contain 1B.mat file to 193B.mat file. I want to read directly this files with merging in single .mat file or using direclty call by for loop

clear
PathName        = uigetdir;
file_all        = dir(fullfile(PathName,'C:\User:\DELL:\Desktop:\F1folder:\1'));
matfile        = file_all([file_all.isdir] == 0); 
clear file_all PathName
%d=dir('*.mat');  % get the list of files
x=[];            % start w/ an empty array
for i=1:length(matfile)
x=[x;load(matfile(i).name)];   % read/concatenate into x
end
b=[];
for j=1:length(x)
    b=[b; x(j, 1).variable1];
end
FileName = [matfile(i,1).name(1:end-9),'.mat'];
save(FileName,'matfile','x','b');

showing error

Index in position 2 exceeds array bounds.

Error in Untitled2 (line 15)

FileName = [matfile(i,1).name(1:end-9),'.mat'];

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Answer 1

Jan 2019-1-7

1
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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/438597-sir-i-have-200-mat-file-in-one-folder-and-i-want-program-that-read-it-automatically-without-merging#answer_355330

编辑：Jan 2019-1-7

在 MATLAB Online 中打开

file_all = dir(fullfile(PathName,'C:\User:\DELL:\Desktop:\F1folder:\1'));

This is strange: User names and other folder names cannot contain colons. I guess you mean:

file_all = dir(fullfile(PathName,'C:\User\DELL\Desktop\F1folder\1'));

Clearing variables is rarely useful in Matlab. Omit this to simplify your code:

clear file_all PathName

You can replace

b=[];
for j=1:length(x)
    b=[b; x(j, 1).variable1];
end

by:

b = [x.variable1];

This is nicer and faster.

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jaypal singh 2019-1-7

Simply i have one folder it's name is '1' and it contains 1B-193B.mat files . I want to call directly this files 193B.mat files

Jan 2019-1-7

"getting errore" is not clear. Please post your code and the complete error message.

What does "I want to call directly this files 193B.mat files" mean?

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Answer 2

KSSV 2019-1-7

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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/438597-sir-i-have-200-mat-file-in-one-folder-and-i-want-program-that-read-it-automatically-without-merging#answer_355325

在 MATLAB Online 中打开

FileName = [matfile(i,1).name,'.mat'];

The above line is enough....

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jaypal singh 2019-1-7

Simply i have one folder it's name is '1' and it contains 1B-193B.mat files . I want to call directly this files 193B.mat files

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