Quick way to write cell or cell array

Hi -

I'm trying to write a cell array containing something like (to a file):

'A1'             'A2'            'A3'
[2291x1 double]  [1424x1 double] [1545x1 double]

Is there any quick and easy way to do so?

I appreciate any suggestion.

Thank you

Pearl

Answer 1

[Azzi Abdelmalek]

 T={'A1' ,'A2' , 'A3';rand(2291,1) rand(1424,1) rand(1545,1)}

%i m not sur if that what you want

[Pearl]

@Azzi

yes, that's what I want to write to a file.

[Azzi Abdelmalek]

% you did'nt specify what kind of file. if excel file you can use

 T={'A1' ,'A2' , 'A3';rand(2291,1) rand(1424,1) rand(1545,1)}
 c='ABC'
 for k=1:3
    n=length(T{2,k})+1
    xlswrite('ans_xls126.xlsx',T(1,k),sprintf([ c(k) '%d:' c(k) '%d'],1,1))
    xlswrite('ans_xls126.xlsx',T{2,k},sprintf([ c(k) '%d:' c(k) '%d'],2,n))
 end

[Pearl]

Azzi -

Thank you! I thought I could get a way without looping through all the data I have since I either have 96 or 384 elements instead of just 'A1' to 'A3'. I guess it's just faster to loop through instead of trying to find a faster way.

Thanks again!

[Azzi Abdelmalek]

%for mor columns (676) you can use this:

T={'A1' ,'A2' , 'A3';rand(2291,1) rand(1424,1) rand(1545,1)}
s='ABCDEFGHIJKLMNOPQRSTUVWXYZ';c=s';
for k=1:length(s)
  for l=1:length(s)
     c=char(c,[s(k) s(l)])
  end
end
for k=1:size(T,2)
  n=length(T{2,k})+1;ch1=strtrim(c(k,:))
  xlswrite('ans_xls126.xlsx',T(1,k),sprintf([ ch1 '%d:' ch1 '%d'],1,1))
  xlswrite('ans_xls126.xlsx',T{2,k},sprintf([ ch1 '%d:' ch1 '%d'],2,n))
end

Answer 2

[Walter Roberson]

MATLAB is a bit weak on routines to write cell arrays all at one time. But you can use something like this:

headers = YourCell(1,:);
header_format = '%.15s %.15s %.15s\n';

values = cell2mat(YourCell(2,:));
numcols = size(values,2);
value_format = [ repmat('%.15g ', 1, numcols-1), '%.15g\n');

fout = fopen('YourFile.txt', 'wt');
fprintf(fout, header_format, headers{:});
fprintf(fout, value_format, values.');  %transpose is important!
fclose(fout);

[Pearl]

@Walter

Thank you for your suggestion. The problem I have is that I can't do cell2mat(YourCell(2,:)) since each element of mine has different dimension. (Please see an example I posted). How can I write column by column? Or else I should create a matrix with the size of maximum numel of all the cell element I have, and then fill with NaN. Will NaN be written to file?

[Walter Roberson]

NaN will be written to the file if you use the structure such as I showed.

In order to write in "columns", you need to define how you can tell columns apart, such as how you can tell whether there are one blank columns or two blank columns instead. When that is defined we can help write the code.