MATLAB: Load .mat file

.dat fileloadmatrix

Hi, I'm trying to import the .dat file attached in Matlab but I have a problem. I'm using the following command: fid=fopen('doe.dat','rt'); A= fscanf(fid, '%f'); fclose(fid);

but A is just equal to 9 insted of the two columns of number.

How I can load the two columns as a matrix?

Thanks Alessandra

Best Answer

Try this:

A = textscan(fid, '%s', 'Delimiter', ' ');
impData = A{1};  %%This cell contains your data
impData = impData (3:end); %%The data excluding the first two lines
strData = cellfun(@strsplit, impData, 'UniformOutput',0); %%Split data into two rows
numData = cellfun(@str2double, strData, 'UniformOutput',0); %%Convert to numeric values
matData = cell2mat(numData); %%Convert into a matrix

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MATLAB: Import data from text file in awkward format

This is neither the fastest, nor the most elegant solution, but it works.

%Read File
fid = fopen('example.txt','rt');
impData = textscan(fid, '%s', 'Delimiter', ' ');
fclose(fid);
impData = impData{1};
%Remove empty lines
impData(cell2mat(cellfun(@isempty,impData,'UniformOutput',0))) = [];
%Split data strings
strData = cellfun(@strsplit, impData, 'UniformOutput',0);
%Search for the keyword curve in the data
idxCurve = cellfun(@(X) any(cell2mat(strfind(X, 'CURVE'))), strData, 'UniformOutput',0);
%Return indicies of the keyword curve
idxCurve = find(~cell2mat(cellfun(@(X) X == 0,idxCurve,'UniformOutput',0)));
%Save the data in a new variable
for i = 1:length(idxCurve)-1
    eval(['Data.Curve' num2str(i) ' = strData(idxCurve(i)+5 : idxCurve(i+1)-1);']);
end
eval(['Data.Curve' num2str(i+1) ' = strData(idxCurve(i)+5 : end);']);
%All the data is stored in Data.Curve1, Data.Curve2, ... 
%Assume you want all the data from Curve3, column 2   
dataOfInterest = cellfun(@(X) X{2}, Data.Curve3, 'UniformOutput', 0);
%Convert the data into doubles (numbers)
dataOfInterest = cellfun(@str2double, dataOfInterest, 'UniformOutput', 0);
%Use a similar notation for the rest of the data

MATLAB: How to read a text file and store its data inside a matrix

clc; clear all ;
fid = fopen ('40_8deg_HL_Both.txt', 'r');
data = textscan(fid, '%s %s %f %f %f %f %f %f %f %s', 'HeaderLines', 9);
fclose (fid);
A = [data{3:9}]

Best Answer

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MATLAB: Import data from text file in awkward format

MATLAB: How to read a text file and store its data inside a matrix

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