Write the content of individual cells in a cell array to discrete text files in a specified directory

Hi

I have an nx1 cell array, M, containing 4x4 matrices in individual cells. For example:

M{1} =
  0.9990   -0.0007    0.0010    0.0013
 -0.0007    0.9999   -0.0001    0.0509
  0.0010   -0.0001    0.9996   -0.0343
       0         0         0    1.0000

I need to write the contents of each individual cell to a discrete text file with sequential names and a .dat extension (e.g. cam1.dat, cam2.dat etc) to a specified folder created previously:

mkdir('C:\transform', 'cameras1');

I can make a single file in the desired format using:

filename = 'C:\transform\cameras1\cams.dat';
fid = fopen(filename,'w');
fprintf(fid,'%-.8e %-.8e %-.8e %-.8e\r\n', transpose(M{1}));
fclose(fid);

But am unsure how to excecute this code iteratively for the entire contents of M.

Any help would be greatly appreciated.

Thomas

[Jan]

What have you tried so far?

Answer 1

[Thomas Seers]

Thanks Jan

I have managed to get the code working using:

for k=1:size(M,1)
    filename = ['C:\transform\cameras1\' 'cams' num2str(k) '.dat'];
    fid = fopen(filename,'w');
    fprintf(fid,'%-.8e %-.8e %-.8e %-.8e\r\n', transpose(M{k}));
    fclose(fid);
end

The FAQ document was most useful. I will try to refer to it first in the future. I'm not sure of the etiquatte for accepting answers in this instance (feel free to advise): thank you nevertheless.

p.s. my 3 year old likes your avatar!

Answer 2

[Jan]

http://matlab.wikia.com/wiki/FAQ#How_can_I_process_a_sequence_of_files.3F

[Jan]

Dear Walter, I've explained 1 minute ago, that I do not post links to the FAQ anymore. But every rule has to be broken from time to time.