I need a program to read data from a single file
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I'm doing a research project for my space weather project, and I have a lot of data files (.21I) separated by folders. With the function "dir" I can now see all the files as a list, but now I need to be able to read the data from a single file. How do I do it?
4 个评论
Mathieu NOE
2021-4-8
hello
how are the data structured in those files , can you edit them ?
Luís Mira
2021-4-8
Well, so far I've got this:
%% Código Matlab Projeto
%tentativas
close all
clear all
clc
a = 'C:\Users\box\Desktop\Projeto Luis\Dados\2021';
d=dir('**/*.21I');
b=struct2cell(d);
w=b(:,1);
which gives me this:
and the structure is the following picture:
And I really don't know what I have to do now.
Mathieu NOE
2021-4-8
is this a homework ? did you get any info / advice / request about what you have to do ?
Luís Mira
2021-4-8
采纳的回答
Omit the brute clearing header:
close all
clear all
clc
This is not useful in productive code and I cannot imagine why it is recommended such frequently to beginners.
Use a function instead, to keep the workspace clean.
Folder = 'C:\Users\box\Desktop\Projeto Luis\Dados\2021';
FileList = dir(fullfile(Folder, '**', *.21I'));
for iFile = 1:numel(FileList)
File = fullfile(FileList(iFile).folder, FileList(iFile).name);
% Now import this File as needed:
...
end
2 个评论
Luís Mira
2021-4-8
Yes, it happens frequently that teachers tell their students to use this brute clearing header. clear all removes all loaded functions from the memory such that they have to be read again from the slow disk. This wastes a lot of time without any benefits. I'm afraid the teachers simply repeat what they have been told when they have been students, although they do not understand, what the code does. This is called "cargo cult programming", which is a widespread programming anti-pattern.
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