MATLAB: How to arrange the data to be written on a text file (like notepad) in the specified format

writing arrays in notepad

I have an array [1 0 1] and then another array [0 -1 0]. I want to write these arrays in a text file in the specified format mentioned in the file attached .

Please provide the syntax required for the following purpose.

Best Answer

A = [1 0 1];
B = [0 -1 0];
C = repmat([A, B], 5, 1);
fmt = repmat('%.4f ', 1, size(C,1));
fmt(end:end+1) = '\n';
fid = fopen('YourFile.txt', 'wt');
fprintf(fid, fmt, C.' );     %transposing the data to be formatted is an oddity of MATLAB
fclose(fid);

Related Solutions

MATLAB: Extracting data from file.

Hello,

Here the code.

I think it is very complicated works with your data.

But I have write this code.

clear; clc;
fid = fopen('Data01.txt'); 
tline = fgetl(fid);
x = 1;
while ischar(tline) 
    data01{x} = tline; 
    tline = fgetl(fid);
    x = x + 1;
end
fclose(fid);
id1 = 1;    id2 = 1;
querystr1 = 'surface(21<12<13)'; %don't use space

querystr2 = 'cosinebin:-8.72000E-02to-3.66000E-02'; %don't use space
for x = 1 : length(data01)
    tmpdata = regexprep(data01{x},' ','');
    if strcmp(tmpdata,querystr1) == 1
        linestr1(id1) = x;    id1 = id1 + 1;
    end
    if strcmp(tmpdata,querystr2) == 1
        linestr2(id2) = x;    id2 = id2 + 1;
    end
end
for x = 1 : length(linestr1)
    for y = 1 : length(linestr2)
        diff = abs(linestr1(x) - linestr2(y));  
        if diff == 1
            lowintv = linestr2(y) + 2;
        end
    end
end
idk = 1;
idl = lowintv;
while ~any(findstr(data01{idl},'total'));       
    data02{idk} = textscan(data01{idl},'%f %f %f');  
    idk = idk + 1;    
    idl = idl + 1;    
end

Now you can get your data stored in variable 'data02'.

Note that you can change the variable 'querystr1' and 'querystr2' with two headers that you want to search.

But, you maynot insert any space in variable 'querystr1' and 'querystr2'.

Try to run it.

MATLAB: How to read text file which has blanks in some columns

There are quite a few approaches. Here one example:

 fh = fopen('Swati.txt', 'r') ;
 fgetl(fh) ;                                           % Skip header.
 algs = {} ;
 data = {} ;
 while ~feof(fh)
    line = fgetl(fh) ;
    if all(line(1:12) == ' ')                          % No algo. name.
        content = textscan(line, '%f %f') ;            % Read only SNR and Q.
        data{end} = [data{end}; [content{:}]] ;        % Append to current data.
    else
        content = textscan(line, '%s %f %f') ;         % Read name, SNR, and Q.
        algs = [algs; content(1)] ;                    % Append to names.
        data = [data; {[content{2:3}]}] ;              % Create new data entry.
    end
 end
 fclose(fh) ;

Running this leads to:

 >> algs
 algs = 
    {1x1 cell}
    {1x1 cell}
 >> algs{1}
 ans = 
    'A' 
 >> data
 data = 
    [3x2 double]
    [3x2 double]
 >> data{1}
 ans =
    20    30
    25    32
    30    35

Please note that it is not the best possible approach/practice, but it is simple enough.

Best Answer

Related Solutions

MATLAB: Extracting data from file.

MATLAB: How to read text file which has blanks in some columns

Related Question