MATLAB: Doubt regarding textscan

reading from a file

hello friends i want to read a file which contains a long number and i have to store in for further processing, ex 2.6300000000000000e+002 2.2500000000000000e+002() like this . i think it is a exp data ,i tried using textscan(fid,'%f %f')but no result i am waiting for ur help

Best Answer

What do you mean by "no result"? What value does fid have? This little test works fine!

    str = '2.6300000000000000e+002 2.2500000000000000e+002';
    cac = textscan( str,'%f %f');
    >> cac{:}
    ans =
       263
    ans =
       225

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MATLAB: Import Multiple Text Files into multiple arrays

D = 'path to the directory where the files are saved';
V = 0:30:1830;
N = numel(V);
C = cell(1,N);
for k = 1:N
    F = sprintf('XYpoints_timeFromDeparture_%d.txt',V(k));
    [fid,msg] = fopen(fullfile(D,F),'rt');
    assert(fid>=3,msg)
    C(k) = textscan(fid,'%f%f%f%f', 'CollectOutput',true);
    fclose(fid);
end

All of the imported data will be in the cell array C:

https://www.mathworks.com/help/matlab/matlab_prog/access-data-in-a-cell-array.html

MATLAB: How to import a spesific variable from a matrix in a file

filename = 'SANJOSE';

(SANJOSE is a text file containing one line: 20 30)

Two options, either pass the file name SANJOSE as a string:

fid = fopen('SANJOSE','r'); %'r' means you only want to read the data. 
your_value = fscanf(fid,'%d',1); %Will only read the first value
fclose(fid);

Or, pass the variable name (filename) that contains a string:

fid = fopen(filename,'r');
your_alternative_value = fscanf(fid,'%d',1);
fclose(fid);

Best Answer

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MATLAB: Import Multiple Text Files into multiple arrays

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