How to read tabular data from *.DAT files into MATLAB?

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G
G 2013-6-22
评论： Luis Miguel Ariza Morales 2022-10-7
Dear all,
just tried to read a *.dat file into MATLAB. Loading the file worked out quite fine.
A=importdata('PIOMAS.vol.daily.1979.2013.Current.v2.dat');
A.data;
However, the resulting data looks strange (binary issue?).
2.0130 0.1490 0.0193
2.0130 0.1500 0.0192
2.0130 0.1510 0.0191
How it should look like
Year #day Vol
1979 1 26.405
1979 2 26.496
1979 3 26.582
1979 4 26.672
1979 5 26.770
1979 6 26.867
1979 7 26.940
1979 8 27.013
1979 9 27.095
1979 10 27.185
Maybe somebody knows how to do the trick. Best regards, Fernandes
  2 个评论
Luis Miguel Ariza Morales
Luis Miguel Ariza Morales 2022-10-7
clear; close all; clc;
A=importdata('nombre_documento.extension');
A.data;
% para ver la primera columna
A.data(:,1); % muestra números en pantalla
% para ver más de una columna
M=[A.data(:,2) A.data(:,3)];
% para graficar lo que deseo:
plot(M(1,1),M(1,2),'.b');
hold on
for i=1:size(M,1)
axis([0 1 0 2]) % en x[0 1]; en y [0 2]
grid on
plot(M(i,1),M(i,2),'.b')
end

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采纳的回答

Walter Roberson
Walter Roberson 2013-6-22
编辑：MathWorks Support Team 2018-11-7
You can use the “Import Tool” app or the “readtable” function to accomplish this.
Right click on the CSV file and select the “Import Tool”, which will help you through the import process. The Import Tool helps you import the data interactively.
Or use the “readtable” function which imports the data as a table:
T = readtable('myCSVfile.csv');
For more information on using “Import Tool” see:
https://www.mathworks.com/help/matlab/import_export/import-data-interactively.html
For more information on using “readtable” see:
https://www.mathworks.com/help/matlab/import_export/import-mixed-text-and-numeric-data-from-a-text-file.html
  13 个评论
显示 11更早的评论
janani subraveti
janani subraveti 2017-4-10
I could load data from the workspace and could send it to buffer using 'from workspace' block in simulink but instead of that i want to use 'from file' block and for using that i need to store my data into .mat file, how can I do it? and my code is in this way when i used 'from workspace' block when my data is being loaded into my workspace.In the following case, I want to give C to a mat file and use the block 'from file' and load C from it, how can I do that?
clc;
Fs=1000;
Ts=1/Fs;
fileID = fopen('pet_data.dat');
OneByte = fread(fileID,'*ubit8');
A=double(OneByte);
B=[0:Ts:(length(A)-1)/Fs]';
C=[B A];
D=dec2hex(A);
Walter Roberson
Walter Roberson 2017-4-10
ts = timeseries(B, A);
save('pet_ts.mat', 'ts', '-v7.3');
Now From File of pet_ts

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