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

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Thomas Seers 2012-12-20

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/57084-write-the-content-of-individual-cells-in-a-cell-array-to-discrete-text-files-in-a-specified-director

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

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Jan 2012-12-20

What have you tried so far?

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Answer 1

Thomas Seers 2012-12-20

0
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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/57084-write-the-content-of-individual-cells-in-a-cell-array-to-discrete-text-files-in-a-specified-director#answer_69082

在 MATLAB Online 中打开

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!