MATLAB: Textscan error – name-value pair arguments must come in pairs

textscan

Hi,

I keep getting the following error:

Error using textscan
Name-value pair arguments must come in pairs.
fid = fopen(char(name),'r');
disp(name);
line = fgetl(fid);
line = fgetl(fid);
EID = sscanf(line,'%s');
line = fgetl(fid);
line = fgetl(fid);
A = textscan(line,'%s','%\t');
FlEx = str2num(cell2mat(A{1,1}(5)))

line =

Fluorescence excitation wavelength (nm):  405

Does someone know how to solve this problem?

Best Answer

This line fails:

A = textscan(line,'%s','%\t');

What is the prupose of the two parameters? You did not explain them and they are not correct, therefore we cannot know the intention of the code.

The usage of textscan is explained exhaustively in the documentation:

doc textscan

If you do not understand some parts, please ask a specific question. Perhaps you want:

A = textscan(line, '%s', 'CommentStyle', '%', 'Delimiter', '\t');

But this is a guess only.

Related Solutions

MATLAB: Correlation pairs

I think that You not need doing this. I'm offering the following variant:

LName={'Name1','Name2','Name3'};
Dat={rand(12,1),rand(12,1),rand(12,1)};
d = [LName;Dat];
Data = struct(d{:});
d1 = cell2mat(struct2cell(Data)');
[R,P] = corrcoef(d1);
Correlation = [LName(nchoosek(1:size(R,1),2)) num2cell(nonzeros(tril(R,-1)))]

R = corrcoef([Dat{:}]);
Correlation = [nchoosek(1:size(R,1),2) nonzeros(tril(R,-1))]

Correlation = sparse(tril(R,-1))

ADD eg:

>> LName={'Name1','Name2','Name3' 'Name4'};
Dat={rand(12,1),rand(12,1),rand(12,1),rand(12,1)};
R = corrcoef([Dat{:}])
Correlation = [LName(nchoosek(1:size(R,1),2)) num2cell(nonzeros(tril(R,-1)))]
R =
            1      0.62864      0.50105    -0.066267
      0.62864            1      0.20848   -0.0042032
      0.50105      0.20848            1      0.23383
    -0.066267   -0.0042032      0.23383            1
Correlation = 
    'Name1'    'Name2'    [   0.62864]
    'Name1'    'Name3'    [   0.50105]
    'Name1'    'Name4'    [ -0.066267]
    'Name2'    'Name3'    [   0.20848]
    'Name2'    'Name4'    [-0.0042032]
    'Name3'    'Name4'    [   0.23383]
>>

MATLAB: How to convert ‘comma’ to ‘dot’

You can use my function fstrrep to replace each . with a , and then use dlmread to read the data:

fstrrep('test22.txt', ',', '.')
data = dlmread('test22.txt')

The m-file:

function fstrrep(filename, oldsubstr, newsubstr, newfilename)
%FSTRREP Replace string in file.
%


%FSTRREP(FILENAME, OLDSUBSTR, NEWSUBSTR, [NEWFILENAME])read each line in
%FILENAME and replaces the string OLDSUBSTR with NEWSUBSTR and writes the
%new line to NEWFILENAME. If the optional argument NEWFILENAME is not
%given, the contents of the original file is changed.
%
%Example: In file 'test.txt', replace each ',' with a '.'
%  fstrrep('test.txt', ',' '.')
%
%Thorsten.Hansen@psychol.uni-giessen.de
%%open file to read from and new file to write to
fid1 = fopen(filename, 'r');
if fid1 == -1
  error(['Cannot open file ' filename ' for reading.']);
end
if nargin < 4
  newfilename = '_temp.txt';
end
fid2 = fopen(newfilename, 'w');
if fid2 == -1
  error(['Cannot open file ' newfilename ' for writing.']);
end
%%read line and write changed line to new file
line = fgets(fid1);
while line ~= -1
  newline = strrep(line, oldsubstr, newsubstr);
  fprintf(fid2, '%s', newline);
  line = fgets(fid1);
end
%%close both files
st = fclose(fid1);
if st == -1
  error(['Cannot close ' filename '.'])
end
st = fclose(fid2);
if st == -1
  error(['Cannot close ' tempfilename '.'])
end
%%replace old file with new file
if nargin < 4
  movefile(newfilename, filename)
end

Best Answer

Related Solutions

MATLAB: Correlation pairs

MATLAB: How to convert ‘comma’ to ‘dot’

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