MATLAB: Texscan multiple variables

texscan

Hello, I use texscan as something like

d = cell2mat(textscan(fid, '%f %f %f'));

My problem is that I have many variables of type f, say 30 of them, and I want somehow to input the number which indicates how many of them I need rather than typing %f %f %f %f %f etc. etc. every time. Any hint?

Chiara

Best Answer

fmt = repmat('%f',1,30);
d = cell2mat(textscan(fid,fmt));

Related Solutions

MATLAB: Problem in read txt file

f = fopen('test.txt')
c = textscan(f,'%s');
fclose(f)
d = cellfun(@(x)x(2:end-1),c{1},'un',0)

EDIT

on comment

f = fopen('test.txt');
c = textscan(f,'%s','Delimiter',',');
fclose(f);
d = regexprep(c{1},'''','')

more variant

f = fopen('test.txt');
c = textscan(f,'%s','Delimiter','''');
fclose(f);
d = c{:}(2:2:end)

MATLAB: Import file with both text and numbers using texscan

The problem is that space is used as delimiter between the second and third column. Your format string, '%s %s %d8 %f %f %s', indicates six columns. However, the header says five columns.

See the documentation on textscan.

Try

    >> cac = cssm()
    cac = 
        {7x1 cell}  {7x1 cell}  [7x1 double]  [7x1 double]  [7x1 double]  {7x1 cell}
    >> cac{2}
    ans = 
        'S'
        'S'
        'S'
        'S'
        'S'
        'S'
        'S'
    >>

where

    function    cac = cssm()
        fid = fopen('cssm.txt');
        cac = textscan( fid, '%s%s%f%f%f%s', 'Delimiter', ', '          ...
                    ,   'Headerlines', 2, 'MultipleDelimsAsOne', true   );
        fclose(fid);
    end

and where cssm.txt contains

    Sampling rate: 1024Hz, SamplingInterval: 0.9765625ms
    Type, Description, Position, Length, Channel
    Stimulus, S  3, 5333, 1, All
    Stimulus, S  1, 9441, 1, All
    Stimulus, S  3, 12526, 1, All
    Stimulus, S  2, 15610, 1, All
    Stimulus, S  3, 24140, 1, All
    Stimulus, S  2, 27934, 1, All
    Stimulus, S  3, 31019, 1, All

Or five columns

    >> cac = cssm()
    cac = 
        {7x1 cell}    {7x1 cell}    [7x1 double]    [7x1 double]    {7x1 cell}
    >> cac{2}
    ans = 
        'S  3'
        'S  1'
        'S  3'
        'S  2'
        'S  3'
        'S  2'
        'S  3'
    >>

where

    function    cac = cssm()
        fid = fopen('cssm.txt');
        cac = textscan( fid, '%s%s%f%f%s', 'Delimiter', ',', 'Headerlines', 2 );
        fclose(fid);
    end

Best Answer

Related Solutions

MATLAB: Problem in read txt file

MATLAB: Import file with both text and numbers using texscan

Related Question