ERROR: Conversion to double from cell is not possible

Hi! I've perused all of the questions that had the same answer, but their recommendations did not work

Used:

• char()
• str2double()
• cell2mat()
• and some other cell2 and different read

What it does fine:

• finds all files in current directory that are .csv (only data files currently in my current directory)
• gets the file names and counts how many .csv files are in there
• starts for loop at 1
• accesses the first csv file and scans column 5 across all rows (should be comparing each integer to be greater than 90)
• I then hit an error message
• makes folder in current directory if there's not a folder
• saves csv file (with project name and today's date--> this was super cool) in that directory and makes you go back to the original directory

ERROR

Line 25: fullData(:,cur_file) = [filelist(1,cur_file);count]

Your help is very appreciated! I am trying to see how much more data I need to collect with this information.

filelist=dir('*.csv'); %directory of .csv files
filelist={filelist.name}; %transfor6med into a list
%filelist = char(filelist)
num_files=length(filelist); %how many subjects?
fullData=[]; %Initialize empty data

%%
count =[];

for cur_file=1:num_files, %for each file
    
    count = 0; %initialize and set to 0 each loop
    
    cur_data=readmatrix(filelist{cur_file}); %read in current file
    %cur_data=filelist(cur_file); %read in current file
    
    %cur_data=str2double(cur_data);
    
    for eachRow=1:length(cur_data(:,5)), %
        if cur_data(eachRow,5)>90;
            count = count+1;
        end
    end
    
    fullData(:,cur_file) = [filelist(1,cur_file);count]
    %fullData(:,cur_file) = [filelist(1,cur_file) count]
    %fullData=[fullData ; count]; %add current file under all previous files
    
    %for all numbers in Progress column, if number in row >= 60, count

end

%%
fullData2=fullData'

% convert matrix array to a table with headers called...
output2 = array2table(fullData2, 'VariableNames',{'FileName','QualifyingCount'})

% checks to see if folder exists in current directory; make if not
if not(isfolder('dataCollectionProgress')),
    mkdir('dataCollectionProgress')
end

%find today's date
%date = datetime("today")
d = date
DateString = datestr(d)

projectName = 'ProjectName'
fileType = '.csv'
outputName = [projectName DateString fileType]

%%
% Export table to csv in same directory
%writetable(output2, 'IdentifyingObjects_' num2str(date) '.csv');
cd ./dataCollectionProgress %change current directory to folder called this from current
writetable(output2, outputName);
cd ../ %go back to previous directory

Answer 1

[MissEgg]

dearlord, I am an idiot.

Fixed it.

I realized that fullData was not initialized as a cell array because of the [ ] I put.

It should be fullData = { }