For Loop stops using either textread or textscan to read in text files

Hi,

%The CALSB.LIS contains all 300 spectrum file = spectrum name, concentration (e.g. calsb.341, 7)

%Each spectrum, calsb.# (e.g. calsb.341) contains (wavelenght, intensity) as shown in the image. I have 300 of these files, each having 519 wavalenghts and 519 intensities.

% I try to store all the intensities for each spectrum in xc (300 X 519).

% Using the loop below I was able to store all the intensities but the loop stops after the 75th iteration (only reading 75 spectra out of 300)

%% Reading in calibration data
[fname1, cc]=textread('CALSB.LIS','%s %f');
fname1=erase(fname1, ',');
m=length(cc);
%fname1= calibration file name
%cc= calibration concentration

for i=1:m
    [wn1,inten]=textread(fname1{i},'%s %s');
    %the wavelength for each calibration doesn't change
    %New values of the intensity is generated for each spectrum
    if i==1
        n=length(wn1);
        xc=zeros(m,n);
        %storing the first Calsb file (spectrum) reading the wavelength and intensity
        %wavelength for each calibration doesn't change but intensity changes
        wn1=str2double(wn1);
        inten=str2double(inten);
        xc(i,:)=inten';
        wnc=wn1';
    else
        %storing the intensity for other Calsb file (spectrum) are stored
        inten=str2double(inten);
        xc(i,:)=inten';
    end
end

%error

I tried using textscan instead of textread and also the loop stops after the 75th iteration (only reading in 75 spectra out of 300)

% Reading in calibration data
[fname1, cc]=textread('CALSB.LIS','%s %f');
fname1=erase(fname1, ',');
m=length(cc);
fname1= calibration file name
cc= calibration concentration

    for i=1:m
    fid=fopen(fname1{i}, "r");
    [all]=textscan(fid,'%f %f');
    wn2= all{1};
    inten2 =all{2};
    fclose(fid);
    wnc=wn2';
    %storing the first Calsb file (spectrum) reading the wavelength and intensity
    %wavelength for each calibration doesn't change but intensity changes
    if i==1
        n=length(wn2);
        xc=zeros(m,n);
        %storing the wavelength and intensity
        wn2=str2double(wn2);
        inten2=str2double(inten2);
        xc(i,:)=inten2';
        wnc=wn2';
    else
        %storing the intensity for other Calsb file (spectrum) are stored
        inten2=str2double(inten2);
        xc(i,:)=inten2';
    end
end

Please, what can I do differently? Thanks for your help.

[Geoff Hayes]

@Qudus Thanni - perhaps the 75th file doesn't exist? You may want to check this with isfile to see if the file exists. If not, you could log an error and then continue with the next file. Something like

for i=1:m
    if ~isfile(fname1{i})
        fprintf('Cannot find file %d with name %s\n', i, fname1{i});
        continue;
    end
    [wn1,inten]=textread(fname1{i},'%s %s');
    % etc.

[Qudus Thanni]

@Geoff Hayes Thank you, I was able to fix it. That part of the data was missing.