Export numeric multidimensional array

2015 12 27
2 个回答
更新时间：2015 12 29
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0 个投票

Hi All I have an MxMxT numeric array. Is it possible to export it in txt format?
Thank you, Veni

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回答（2 个）

Jan
Jan 2015-12-27
编辑：Jan 2015-12-27

1 个投票

Yes, why not. The question is only, which kind of format you want. E.g. this is simple:
A = rand(3,4,5);
File = fullfile(YourFolder, 'Output.txt');
fid = fopen(File, 'r');
if fid == -1, error('Cannot open file: %s', File);
fprintf(fid, '%g\n', A);
fclose(fid);
Then you get a single column of values. The information about the original dimension is lost. So perhaps you want to insert the array size as first line? Or you can create a file with M columns. Perhaps you want to insert a blank line after each MxM sub-matrix. This is up to you. The more details you specify, the more complicated is the function to import the data.
Note that text files are useful, if a human has to edit it. In all other cases binary files are better.

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veni
veni 2015-12-28
Y(:,:,1) =
1 1 1
1 1 1
1 1 1
Y(:,:,2) =
1 0 0
0 1 1
0 1 1
Y(:,:,3) =
1 0 0
0 1 1
0 1 1

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veni
veni 2015-12-28

0 个投票

Hi Jan,
Thanks for your message. For some reason I cannot figure out, the example returns an error message (Cannot open file: C:\Users\veni\Documents\MATLAB\Similarities\Output.txt as my folder is the 'C:\Users\veni\Documents\MATLAB\Similarities\').
My results are of the form Y(:,:,1) =
1 1 1
1 1 1
1 1 1
Y(:,:,2) =
1 0 0
0 1 1
0 1 1
Y(:,:,3) =
1 0 0
0 1 1
0 1 1
etc.
I had a thought of exporting them as a single time series and reshape it. But I feel that this is not an efficient way. Any ideas?
Thank you in advance. Veni

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Steven Lord
Steven Lord 2015-12-29
My guess is that you don't have write permission in that directory. To check this, try to write to a file in your TEMPDIR.
Jan
Jan 2015-12-29
@veni: Please explain the wanted format for the file and if you really need a text file.

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veni
veni
2015-12-27

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Jan
Jan
2015-12-29

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