MATLAB Batch processing mat

These days, people are constantly asking how to convert txt into mat format in bulk. Mat format storage occupies little space.

Here, for example, the site data of the China Meteorological Bureau, the conversion procedure is as follows:

CLC% Clear Screen

Clear% clear Memory variable

filenames = ls (' *.txt ');% lists all txt files under that path as an array of strings

[m n] = size (filenames);% gets the number of rows filenames

for j = 1:m

Fid=dlmread (char (Filenames (J,:)));

Matname=char (Filenames (j,1:6));

Save (Matname, ' fid '),% converted to mat format

% Xlswrite (matname,fid),% to XLS format

Jdt=[matname, ' conversion complete! ';

Disp (JDT)

End

After the above program has been converted, multiple mat formats need to be merged into one file:

CLC% Clear Screen

Clear% clear Memory variable

filenames = ls (' *.mat ');% lists all txt files under that path as an array of strings

[m n] = size (filenames);% gets the number of rows filenames

G=[];

for j = 1:m

D=load (Filenames (j,:));

E=struct2cell (d);

F=cell2mat (e);

Clear d e;

G=cat (1,G,F);

End

Save (' dailyprecipitation ', ' G ');

There are also people who need to store data according to the site, as mentioned in the previous article. The procedure is as follows:

CLC% Clear Screen

Clear% clear Memory variable

filenames = ls (' *.mat ');% lists all txt files under that path as an array of strings

[m n] = size (filenames);% gets the number of rows filenames

for j = 1:m

G=load (Filenames (j,:));

E=struct2cell (g);

Clear G;

F=cell2mat (e);

Clear e; 

Aa=f (:, ten);

AA (aa>20000) =0;

F (:, ten) =AA./10;    

F=sortrows (f,[1,5,6,7]);

[u v] = unique (f (:, 1));% find different numbers in the first column and where they are located

q = 1;

For i = 1:length (v)-1

    matname=num2str (U (i));

    R=f (Q:v (i+1)-1,:);

    Save ([Matname, '. txt '], ' r ', '-ascii ');% write

    q = V (i+1);

End

End